Subject: Digital Elev. Data Catalogue (2/5) [LONG!]
From: bruce@geovax.ed.ac.uk (Bruce Gittings)
Date: 1 Sep 96 00:03:35 GMT
##### Part 2 of the Digital Elevation Catalogue #####
Box 25286 FAX: ?
Denver, CO 80225, USA.
DCW is distributed on FOUR CDs, with PC software to read the Vector
Product Format (VPF). The size of the whole DCW database is approx.
1.6GB. The size of the hypsography is estimated at ~450MB. There is
also some supplementary hypsography which is estimated at ~150MB. The
individual 5 x 5 degree tiles vary greatly in terms of their data volume.
The absolute accuracy of the DCW vector information is 2000m circular
error (horizontal) and +/- 650m linear error (vertical) for the contours.
The vertical accuracy for the spot heights is +/- 30m. All are at 90-
percent confidence as defined by the US Defense Mapping Agency (DMA).
The structure of the DCW database is based on the Vector Product Format
(Military Standard-MILSTD 60006) and the Vector Relational Format (VRF)
of the International Digital Geographic Exchange Standard (DIGEST). DCW
is described by Military Specification (MIL-D-89009). Both MILSTD 60006
and MIL-D-89009 are available from:
Standardization Document Order Desk
Building 40
700 Robbins Avenue
Philadelphia
PA 19111-5094, USA.
(2) The Digital Chart of the World (DCW) DEM data consists of a resampled
array of regularly spaced elevations at intervals of 30-by-30 arc-
seconds. (which is approximately 1km). The data have been generated
using the ANUDEM program developed by the Australian National University
(see Note (F) in software section below) and are at a resolution which is
compatible with the Advanced Very High Resolution Radiometer (AVHRR)
sensor. The horizontal datum is WGS84. Elevation values are expressed
in feet above mean sea level.
This data produced from the Defense Mapping Agency's (DMA) 1:1M scale DCW
database using the contour line, point height and hydrology layers.
Although the accuracy of these data has not been measured or calculated,
they will be no more accurate than the DCW source (see Note (1) above for
details). The EROS Data Center intends to generate this DEM data for the
entire world to be distributed on CD-ROM as major geographic regions are
completed.
As of October, 1995 the following areas are complete and available for
distribution:
Madagascar (26S 43E x 11S 51E)
Haiti (Dominican Republic, Puerto Rico, Haiti - 15N 75W x 20N
65W)
Africa (40N 20W x 40S 60E)
Japan (25.812N 125.096E x 46.279N 150.004E)
North America (incl. Hawaii) (180W 6N x 50W 90N)
Europe (25W 35N x 70E 85N)
NB. The North America dataset is compiled from a number of sources many
of which were at an order of magnitude greater resolution (3 arc-
seconds). These have been generalised down to 30 arc-seconds.
The European data is also compiled from a series of sources but
particularly DTED-1 (see Note (6), and thus has much greater accuracy
than the other data-sets. These datasets are available at no cost over
the internet via anonymous ftp from the EROS Data Center at Sioux Falls,
South Dakota, USA. The address is edcftp.cr.usgs.gov (Numeric IP address
is 152.61.128.6) and the data is in directory pub/data/30ASDCWDEM. The
files are located under sub-directories named after the area of interest
(eg. AFRICA).
For those unfamiliar with anonymous ftp...
(NB. Commands may vary slightly with differing ftp implementations)
> ftp edcftp.cr.usgs.gov
220 dg3 FTP server (Version wu-2.4(3) Fri Apr 15 1994) ready.
Name (EDCFTP.CR.USGS.GOV:bruce): anonymous
331 Guest login ok, send your complete e-mail address as password.
Password:
230-This is the USGS/EROS Data Center anonymous FTP server.
230-
230 Guest login ok, access restrictions apply.
ftp> cd /pub/data/30ASDCWDEM
ftp> ls
150 Opening ASCII mode data connection for file list.
AFRICA
MADAGASCAR
NORTH_AMERICA
HAITI etc. etc.
ftp> cd HAITI
ftp> get README
The README file was the source document for this information and includes
details of the data processing steps, algorithms used and detailed file
formats. The HAITI readme file (which gives details of the common data
format used) is available by sending email containing the text "SEND
DCWDEM" to our information server (geoinfo@geo.ed.ac.uk).
These data, and associated documentation, are also available via WWW at
the URL:
http://edcwww.cr.usgs.gov/glis/hyper/guide/30asdcwdem
The data are distributed as 16-bit straight raster image files in a
latitude/longitude coordinate system. There are 4 ancillary files that
accompany each image file. They contain the number of lines and samples
of the image, geographic referencing information, and summary statistics.
Note that the header file is appropriate for use with the Arc/Info Image
Integrator.
Files are named after the image with the following extensions:
*.bil = image file *.bilw = world file
*.hdr = header file *.stx = statistics file
*.tik = coordinate file
Note that to retrieve the image file you must switch ftp into "binary"
mode. All of the other files are ASCII text. Thus you should use:
ftp> binary
ftp> get haiti.bil
The Customer Services Section of the EROS Data Center will be able to
provide up-to-date information about DCW DEM data availibility and areas
that are in progress. They will also take orders for this data on
unlabeled nine-track magnetic tape at a 1600 or 6250 bpi density.
They can be contacted at:
Customer Services Tel: (605) 594-6151
EROS Data Center FAX: (605) 594-6589
Mundt Federal Building
Sioux Falls
SD 57198, USA.
Apparently University College London (UK) are also producing terrain
models from DCW.
(3) United States Geological Survey (the US national mapping agency) are at:
Earth Science Information Center Tel: 1-800-USA-MAPS
US Geological Survey (Continental US Only)
507 National Center (703) 860-6045/6336
Reston, Va 22092, USA. (Others)
FAX: 1-703-648-5548/5939
Description of USGS DEM Products
--------------------------------
The 7.5' (30m) DEM is derived either by digitising USGS 1:24000 scale
quad maps (which gives less accurate results) or by scanning aerial
photographs (now exclusively involving the National Aerial Photography
Programme quad-centred photographs). Note that the vertical scale of the
7.5' DEMs may be in feet (in areas lower relief) or in metres (in areas
of higher relief).
Many of the 7.5' DEMs (notably those capture by digitising existing map
sheets) are regarded as being of relatively poor quality, particularly in
places of high relief. Also they are often not well edgematched as a
result of being produced on the basis of individual map sheets.
Significant gaps have been observed between quads. Data interpolation is
really the only viable means of filling these gaps.
Importantly the 7.5' DEMs are referenced to the UTM cartesian co-ordinate
system, whereas all other USGS DEMs are referenced to geographical
(latitude/logitude) co-ordinates.
The 30' and 15' DEMs are closely related products for the continental US.
Each 30' DEM is also available as four 15' DEMs. These products were
produced either from digital contours obtained from maps between 1:24K
and 1:100K scale or from resampling 7.5' DEMs. They are referenced to
North American Datum of 1927 (NAD 27) or NAD 83. Elevations may be in
metres or feet. Elevations located on the minute lines (all four sides)
correspond with the same profiles on adjoining DEM blocks.
The 15' DEM for Alaska is a different product where one DEM corresponds
closely to a 1"/mile (1:63360) map sheet.
The 1 Degree DEM provides coverage in one by one degree blocks and is
available for all of the contiguous United States, Hawaii and Alaska.
The data is derived by reformatting the Defense Mapping Agency (DMA) DTED
Level 1 data, which was in turn taken from 1:250K maps and
photogrammetric sources in the US. Thus see Note (6) for accuracy
information.
The 1 Degree DEM consists of a regular array of elevations referenced
horizontally on the geographic coordinate (latitude/longitude) system of
the World Geodetic System 1972 (WGS 72) or, for a few DEMs, the WGS 84
Datum. Note that the World Geodetic System is significantly different to
the North American Datum (NAD) used to reference the 7.5' DEMs.
Conversion is possible, but is not trivial. Elevation data located on
the degree lines (all four sides) correspond with the same profiles on
adjoining DEM blocks.
Elevations are in meters relative to mean sea level. Spacing of the
elevations along and between each profile is 3 arc-seconds with 1201
elevations per profile. The only exception are DEMs in Alaska, where the
spacing and number of elevations per profile varies depending on the
latitudinal location of the DEM. Latitudes between 50 and 70 deg. north
have spacings at 6 arc-seconds with 601 elevations per profile and
latitudes greater than 70 deg. north have spacings at 9 arc-seconds with
401 elevations per profile.
Digital Contour Data from USGS
------------------------------
Several parts of the US have substantial 1:24K digital contour coverage
that was obtained from scanning and vectoring 7.5 minute maps. For
example, much of north-central Nevada is done because this is an area of
active gold mining. It is reported that the entire state of Washington
is done and will be available from the USGS from 1995.
DEMs from USGS 1:100K scale maps are a few years away. The USGS have said
they will not be working on these until the contour information is
available in digital format (DLGs) for this map series.
USGS DEM Accuracy
-----------------
The USGS classifies DEM accuracy into three distinct levels as follows:
Level 1 (Now photogrammetric source only) RMSE 15m, Absolute
Maximum Error 50m. Most of the 7.5' DEMs (and all new
ones) have a 7.5m RMSE. The older digitised 15m
acccuracy DEMs will all eventually be replaced by those
of greater accuracy.
Level 2 (Edited Photo Source, Cartographic Source) - RMSE < 0.5
contour interval, Absolute Maximum Error < 1 contour
interval.
Level 3 (Cartographic Source) RMSE < 0.333 contour interval,
Absolute Maximum Error < 0.666 contour interval
Virtually all 7.5' data is classified Level 1 (a few are Level 2). All
30' DEMs derived from 7.5' data are also classified Level 1; all 30'
DEMs dervied from contours are Level 2. All 1 Degree DEMs are classified
Level 3. Remember that the 1 Degree DEMs are dervied from DMA DTED
LEVEL-1 data, but the DMA use the term "level" to refer to spatial
resolutions, whereas with USGS is is an accuracy measure.
For all USGS DEMs the accuracy classification level is recorded within
the DEM data structure.
Obtaining USGS DEMs
-------------------
Importantly, because USGS data is public-domain, files are available over
the internet via anonymous ftp. A small selection of DEM data (together
with DLG, GNIS and other data) is available from ftp://spectrum.xerox.com
(Numeric IP address is 192.70.225.78). There are currently more than 90
7.5' (30m) DEMs and others are actively collected. The DEM data are
located in the directory "/pub/map/dem".
For those unfamiliar with anonymous ftp...
> ftp spectrum.xerox.com
220 spectrum FTP server (SunOS 4.1) ready.
Name (SPECTRUM.XEROX.COM:bruce): anonymous
331 Guest login ok, send e-mail ident as password.
Password:
ftp> cd /pub/map/dem
ftp> ls
.
. list of available files
.
ftp> get INDEX-DEM
NB. Commands may vary slightly with differing ftp implementations.
IMPORTANT FILES (that you should collect) for spectrum.xerox.com:
INDEX-DEM - a list of the available DEM data
NOTES-DEM - a description of the DEMs
README-DEM - details of costs etc. of acquiring data from USGS
(Other sites may use different names for the important index files if
they are available).
The contact person from this ftp site is:
Lee Moore Tel: (716) 422 2496
Webster Research Center E-mail: Moore.Wbst128@xerox.com
Xerox Corporation
All of the 1 Degree (1:250K) DEMs are available via anonymous ftp from
ftp://edcftp.cr.usgs.gov (Numeric IP address is 152.61.192.70). This ftp
server is at the EROS Data Center in Sioux Falls, South Dakota. These
data are encoded with the GNUzip compression program, although the
server can automatically decompress the files as they are sent, but
remember the transfer time will take a lot longer. The files average
1.75MB compressed but are around 8.8 MB once uncompressed.
For the contiguous US the files are organised in directories (A-Z) that
represents the first character of the name of the DEM. The file names are
from the corresponding 1x2 deg 1:250K scale quadrangle map name with "_e"
or "_w" appended for the east or west block. There is a simple index of
these quadrangles available by email from geoinfo@geo.ed.ac.uk as file
USGS250K). The Alaskan files follow a similar structure but are in the
sub-directory /Alaska. Note that the data files are stored on a robotic
mass-storage device so there may be a short delay (~10 secs) while the
media is retrieved.
This server also holds DEMs produced from DCW (see Note (2) above). To
access the parent collection of digital data at the EROS Data Center via
the world wide web, connect to the following URL:
http://sun1.cr.usgs.gov/eros-home.html
An additional source of the USGS One Degree DEMs is:
CD ROM Inc., Tel: 303-526-7600
Golden, Colorado, USA
The U.S. is covered on 6 CDs: CD 1 Longitude 64-83 W
CD 2 Longitude 84-93 W
CD 3 Longitude 94-101 W
CD 4 Longitude 102-112 W
CD 5 Longitude 113-160 W except
Alaska
CD 6 Alaska
Prices are $495 for one CD, $1200 for CDs 1-5, $1566 for all six. This
is substantially cheaper than the prices for the same data on tape from
USGS, if you want complete coverage. Ftp access is likely to be most
cost- effective if you have this facility.
Information about USGS Products
-------------------------------
For a definitive description of the USGS DEM data and formats see the
USGS Data Users Guide 5, "Digital Elevation Models". This document can
be ordered, for a small fee, from the Earth Science Information Center at
the address above. All of the USGS Data Users Guides (dealing with DEM,
DLG, Land Use/Land Cover and Geographical Names data) together with
standards documents for all of these data sets are available via
anonymous ftp from ftp://www-nmd.usgs.gov in the directory /pub/til/.
Information about the 1 Degree DEM can also be found through the World
Wide Web (WWW) at the following URL:
http://edcwww.cr.usgs.gov/glis/hyper/guide/1_dgr_dem
Extent of the USGS Digital Mapping Programme
--------------------------------------------
Complete DEM coverage is available at 1 Degree, 30' and 15'. However,
only approx. 50% of the US (not Alaska) is covered by the 7.5' (30m)
sheets. The following table shows the total number of digital data files
available at the end of the 1994 USGS financial year.
FY'94 FY'93
------- -------
*DEM (1 Deg or 1:250K) 1,385 (Complete minus three in
Alaska)
DEM (15' and 30') N/A (Complete ?)
DEM (7.5' or 1:24K) 29,167 27,585
DLG - boundaries 18,692 17,369
- PLSS 15,403 14,144
- transportation 8,153 7,009
- hydrography 7,686 6,765
- hypsography 2,659 2,362
- vegetation cover 1,596 1,506
- non-veg surf cvr 1,593 1,477
- survey control 1,606 1,488
- manmade features 1,720 1,471
DLG (30' or 1:100K)
- hydrography 1,842 (Complete except Alaska)
- transport 1,842 (Complete except Alaska)
- boundaries 1,293 N/A }
- PLSS 969 N/A } Estimate 2 years to complete
- hypsography 834 N/A
LULC (1:250K + 1:100K) 517 (Complete except Alaska)
* Note that two defective 1 Degree (1:250K) DEMs have been found
(one in Maine and one in Arizona)
[Mark Fleury (mgfleury@netcom.com) posts regular updates of USGS
production statistics to GIS-L / comp.infosystems.gis. I will only
publish year-end figures]
Complete coverage of 7.5' (1:24K) data would extend to approx. 54,500
quads for the 48 states and Hawaii, and I believe approx. another 4,000
15' quads in Alaska. 7.5' DEMs coverage is complete for the states of WV
and CT, very nearly complete for ID and extensive for
UT,WY,CO,KY,TN,VA,PA,RI,VT and NH.
USGS GeoData Availability Indexes
---------------------------------
The USGS Lakewood Colorado Earth Science Information Center (ESIC) has a
prototype US spatial data availability index, which includes details of
available USGS DEMs, Digital Line Graphs (DLGs) and Land Use Land Cover
(LULC) data. Indexes are updated on a monthly basis to provide the most
current status of available US GeoData (information is intended to
reflect more than just USGS data, although at the moment all data
described is USGS data).
These indexes are available via anonymous ftp (the operation of which is
decribed earlier in this document) from the address greenwood.cr.usgs.gov
(Numeric IP address is 136.177.48.5). The file INDEX, which describes
the contents of the repository, should be picked up from the default
directory; the index files are in the directory "/pub/esic", along with
a useful "readme.txt" file. Note that these files can be large (the one
containing the 7.5' and 15' DEM indices is >1.5MB) and will get even
larger over time. The index files include:
CDROM.TXT - Assortment of data files from National Mapping Division,
Geologic Division, and Water Resources Division on CD-ROM
format.
DEM24.TXT - Large scale (7.5' and 15' units) Digital Elevation
Models (DEMs). Contains states, alphabetically sorted quadrangle
names, south-east longitudes/latitudes, file numbers, dates
created and accuracy.
DEM250.TXT - Defense Mapping Agency arc second DEMs. Contains
states, alphabetically sorted quadrangle names, south-east
longitudes/latitudes and file numbers.
DLG24.TXT - Large scale (7.5' and 15' units) Digital Line Graphs
(DLGs).
DLG100.TXT - Intermediate scale (30' by 60' units) DLGs.
DOQS.TXT - Digital Orthophoto Quadrangle (DOQs) quarter-quadrangle
images.
LULC100.TXT - Intermediate scale (30' by 60' units) Land Use and
Land Cover data
LULC250.TXT - Small scale (1 by 2 degree units) Land Use and Land
Cover data.
USFSCFF.TXT - U.S. Forest Service digital Cartographic Feature Files
(CFFs) based on large-scale 7.5 minute quadrangles. This is
unstructured data, but may exist for areas where DLGs are
currently unavailable.
WADNR.TXT - Washington State Department of Natural Resources digital
data based on large-scale 7.5 minute quadrangles. This data
currently consists of hydrography data coverage for selected
Washington quadrangles.
Contact Eugene G. Ellis (gellis@usgs.gov) for further details or with
problems. The ESIC ftp server also holds a series primarily geological
reports and datasets (including geological maps of various US states in
Arc/Info format).
(4) Ordnance Survey (the UK national mapping agency) are at:
Romsey Road Tel: (0703) 792300
Maybush FAX: (0703) 792324
Southampton SO9 4DH, UK.
The Ordnance Survey's 1:50 000 scale Digital Height Data (OS term for
both contours and DEM) product is know as Land-Form PANORAMA. It was
produced by the Directorate of Military Survey from contours (at a 10m
vertical interval) on OS Landranger maps (1:50K). The contour data are
in vector format and comprise contour lines, form lines, breaklines,
lakes and coastlines, plus a selection of spot heights. Contours are
provided at 10m elevation intervals and spot heights to the nearest
metre.
The DTM data consists of height values at each intersection of a 50m
horizontal grid, the values have been mathematically interpreted from the
contours on Landranger maps. Height values are rounded to the nearest
metre, with those values over land being given the value of 1m. Heights
are listed reading south-north from the south-west corner of the 20Km
square at 50m intervals, giving 401 points to a column. This column is
then succeeded by 400 columns. The total number of heights is therefore
160801. DTM accuracy is variable depending on the nature of the terrain;
results have ranged been 2m in hilly rural areas and 3m in lowland urban
areas.
Both the 1:10 000 Contour and DTM products (known as Land-Form PROFILE)
are derived from the 1:10K map series contours (5m vertical interval but
10m in mountainous terrain). The contour data is in vector format, with
height recorded as an attribute. The DTM data are available as an array
of points at a user-defined spacing (typically 10m, but this may be
relaxed in order to reduce storage requirements). The price of the
product depends on whether the DTM is derived from contours alone or
whether it is enhanced with other source information, such as high and
low water marks, or levelled spot heights extracted from published large
scale maps. The 1:10K data are only available to special order and can
be tailored to specific user requirements. Complete coverage of the UK
at 1:10K scale will not be complete until 1996, although the OS will
digitise these areas to order if required. Data formats include NTF,
OSTF (older Ordnance Survey Transfer Format), MOSS, DXF and Laserscan
IFF.
NTF is the UK National Transfer Format (now incorporated within British
Standard BS7567). The OS are now distributing their data in NTF-2 (NTF
Revision 2) which is *their interpretation* of BS7567. L1 is NTF Level 1,
L4 is NTF Level 4 (levels are internal structures within NTF).
StorageVolumes:
--------------------------------------------------------
Scale | 1:10K | 1:50K |
|---------------------------------|--------------------|
Type | Contours | DEM | Contours | DEM |
|----------------|----------------|----------|---------|
Format | NTF L2 | DXF | NTF L5 | DXF | NTF L1 | NTF L5 |
|--------|-------|--------|-------|----------|---------|
Average | 1.2MB | 4.0MB | 1.5MB | 19.5MB| 1.5MB | 0.75MB|
| | | | | | |
Maximum | 2.8MB | 9.5MB | 1.5MB | 19.5MB| 4.5MB | 0.75MB|
--------------------------------------------------------
Note that because the DEMs are derived from contours and not the other
way round any contours generated from the DEM will not necessarily fit
back onto the map sheet! I am told that the OS 1:50K DEM edge-matches
"very well".
(5) The 10' data was produced originally by the US Navy Fleet Numeric
Oceanographic Center (FNOC) and consists of a 1080 x 2160 Geographic Grid
(Lat / Long) containing Elevation (Max/Min/Mode to +/- 30 feet), Urban
and Water Cover, Number and Direction of Ridges, Primary and Secondary
Surface type (valley, lake, marsh, desert, ice-pack, low/avg/high/rugged
mountains etc.).
The 5' dataset (known as ETOPO5) is a mosaic of a variety of different
data sources produced in the mid-1980's. It consists of a 2160 x 4320
Geographic (Lat - Long) centroid-registered grid. Although it is
presented at 5' much of the land areas are resampled from the FNOC 10'
DEM.
The marine component of ETOPO5 uses the USA Naval Oceanographic Office's
Digital Bathymetric Data Base 5-minutes (DBDB5) - see also Note (9).
This is a 5-minute lat-lon grid. Grid cells are centred over lat-lon
lines (for example, the top row contains 4320 identical values of -4290
metres for the North Pole). All the land-based grids, to the best of my
knowledge, are bounded by lat-lon lines (that is, centroid-registered)
and thus an inherent slight misregistration occurs between land and
oceans.
For Australia, ETOPO5 consists of a 5-minute lat-lon grid from Australian
Bureau of Mineral Resources. For New Zealand, a 5-minute lat-lon grid
from the Department of Industrial and Scientific Research is used.
For much of North America, Europe, the Mediterranean, Japan, and Korea
data from the U.S. Defense Mapping Agency (DMA), or its partial
predecessor the Army Map Service, are used. For the co-terminous USA
(lower 48 states) this is a 30-second lat-lon grid, for other areas, a 5-
minute lat-lon grid.
For all remaining land areas the USA Navy's Fleet Numerical Oceanography
Center (FNOC) 10-minute lat-lon grid is used (described above). These
data are expressed to the nearest 30 feet while all of the original 5'
data are expressed to the nearest metre.
The ETOPO5 dataset was originally assembled by Margo Edwards while she
was a graduate student at Washington University, St. Louis, Missouri,
with the support from the National Oceanic and Atmospheric
Administration's National Geophysical Data Center (NOAA/NGDC) who
provided the individual datasets. Peter Sloss of NGDC has periodically
inserted corrections into the data set - the corrections have been
offered by numerous people. Thus there have been several updates to the
original ETOPO5.
NGDC's policy was that the ETOPO5 data should be widely and freely
available. This policy has given rise to a minor problem, in that there
are copies of different versions of the dataset widely available on the
internet. Determining which version is which is just about impossible
and it is likely that at least some of these represent personal
improvements or corruptions of the original version(s) of ETOPO5
distributed by NGDC.
The data has been placed on the walrus.wr.usgs.gov ftp server in the
directory /pub/data. Logon as "anonymous" and give your email address as
the password. There is a README file, although note that the sources of
ETOPO5, as described above, contrdict with what is stated in this README
file. I am reliably informed that the README file is wrong!
The dataset divided into the northern and southern hemispheres. The two
files total 16.2MB in UNIX compressed format ('Z' files). Binary
transfer is required. The ETOPO5 data can also be found on ftp://
nic.funet.fi in the /pub/doc/world/etopo5 directory (this machine is in
Finland).
The 5' (ETOPO5) and 10' data-sets are available as part of the Global
Ecosystems Database, produced by the NGDC, on Compact Disk. This is
designated "Disk A" and is intended to be the first of a set issued on an
annual basis. The data are in a standard ISO 9600 CD-ROM format. The CD
comes with DOS executable software (a subset of IDRISI) and includes
export capabilities for UNIX users. Direct CD access from UNIX is
possible but it will probably require format conversion. This is
available from:
Global Ecosystems Database Project Tel: (303) 497-6125
National Geophysical Data Center FAX: (303) 497-6513
325 Broadway E/GC1 Email: info@mail.ngdc.noaa.gov
Boulder, CO 80303, USA
The ETOPO5 data base, the FNOC 10-minute gridded Modal height data for
land masses and a gridded 30-second data base for the 48 contiguous
United States from the US Geological Survey are all on the CD-ROM called
the Global Relief CD-ROM. This may be a different version of ETOPO5 than
contained on the Global Ecosystems CD-ROM mentioned above.
Prepayment is required for this CD-ROM. The cost is $100 + $10 non-USA
shipping. Credit cards are accepted with details transmitted by phone,
FAX or email. Cheques should be made payable to "NOAA/National
Geophysical Data Center". Further details from:
NOAA/NGDC Tel: (303) 497-6338
325 Broadway E/GC4 FAX: (303) 497-6513
Boulder, CO 80303, USA Email: info@ngdc.noaa.gov
URL: http://www.ngdc.noaa.gov
(See also Note (37) regarding other data available from NOAA/NGDC)
(6) This is military data. Agencies of the Executive Branch of the U.S.
Federal Government may acquire such data under certain procedures with
DMA, but the data are not freely copyable. Only some of the 90m data has
been released and I understand that release has been suspended due to
"sensitivity" of some components of the data-set in addition to
politics.
Although the changing world political situation should increase the
likelihood of this (and other more detailed) datasets being released into
the public-domain there are complex arrangements involving honouring
bilateral agreements with the many individual sources of these data.
Since most governments have state copyright of DEMs or source data, and
DMA wishes to continue to work with these governments, it honours these
copyrights and accepts that they apply to the DTED data. The DMA does
not want to be seen as dumping large volumes of cheap data into the
public domain when the individual countries (especially European
countries) inevitably wish to sell similar data for a significant prices.
Countries have told the US that they would wish to 'profit' from the sale
of data covering their national territory. Thus DMA have backed away
from any release strategy. However, for individual countries, the data
may be available through the government or national mapping agency of
that country (usually at significant cost).
DTED-1 (the 90m data) was originally designed to provide basic
quantitative data for military training, planning and operating systems
that require terrain elevation, slope and related information. This
includes applications such as modeling the influence of terrain on radar
line-of-sight, automatic height determination, terrain modeling etc.
Further enquiries to:
The Director Tel: (301) 227-2495
DMA Combat Support Center
ATTN: PMA
Washington, DC 20315-0010, USA
They can supply "Digital Sample Set #1" which consists of eight cells of
Digital Terrain Elevation Data Level 1 (DTED-1) for 43 N to 45 N 113W to
109W on 1600 or 6250 bpi, 9 track, 1/2" mag tape. Cost $600. This
includes a copy of the DMA Product Specification.
I am told that a catalogue of available DMA DTED data forms Part 7 of
Volume 1 of the Department of Defense (DOD) DMA Catalog available from:
Defense Mapping Agency Tel: AV 693-4546
Aerospace Center com 314-263-4546
ATTN: PPGD
3200 South Second Street
St. Louis, MO 63118-3399, USA
The Absolute Horizontal Accuracy is 130m circular error at 90%
probability and the Absolute Vertical Accuracy is +/- 30 m linear error
at 90% probability. The quoted size of the cells (~3Mb) is smaller in
northern latitudes.
(7) CDSLI is the Chief Directorate of Surveys and Land Information, the South
African national mapping agency. They are located at:
CDSLI, Tel: +27 21 685 4070
Private Bag X10, FAX: +27 21 689 1351
Mowbray, 7705,
South Africa.
200m DEMs exist for about half the country (the more interesting areas),
400m DEMs exist for the rest of the country (the flat bits). CDSLI are
starting to produce 50 metre DEMs as well. The absolute height accuracy
of the 50m DEM is 2.5 metres, though this DEM is only available for the
Cape Peninsula area and the Pretoria-Witwatersrand-Vaal area. During the
1994/5 financial year they intend creating a 50m DEM for the greater
Durban area.
Each DEM covers a quarter-degree square (to match the 1:50 000 national
mapping series). They are on the Gauss Conformal projection on the
Clarke 1880 (modified) ellipsoid. NES is the South African National
Exchange Standard, copies of which are also available from CDSLI.
NB. 1996: A recent survey identifies the following prices for the
50m and 400m DEMs (in US dollars):
per km2 Total Copyright Restrictions
------- ----- ----------------------
50m DEM $0.0040 $4,909 One-time license fee
400m DEM $0.32 $1,979 " "
(8) CD1 of the Global GRASS CD-ROMs contains the following files (as well as
many others); world topographic elevation ranges, continental shelf,
aspect (direction of slope), a shaded relief map.
CD2 contains the following files (amongst others); a bathymetry file,
visual earth - shaded image file, a ridge systems file, a shaded relief
map (replaces the one in CD1), a file containing major mountains of the
world.
These data are based on ETOPO5 (see above) but is in GRASS 4.0 format,
however that is equivalent to Bit-Interleaved Pixel (BIP) format, which
can be read into ARC/INFO GRID and other systems.
CD4 "Sites of the World" has a high resolution (1.5') gray scale shaded
relief map showing detailed watershed basins in colour (as well as other
files). The data is in COMPRESSED GRASS format making export to other
GISs more difficult.
Prices are as follows
CD1: $375 CD4: $225 All 5: $1,125
CD2: $300 CD5: $225 CD 1,2&3: $ 750
CD3: $250
$10 required for shipping outisde US, 25% reduction for US federal
agencies.
For further details (e.g. data sources) and an order form, send your FAX
number or postal mailing address to:
Scott Madry, Associate Director Tel: 908-932-1582
Center for Remote Sensing and Fax: 908-932-8746
Spatial Analysis, Cook College Email: madry@ocean.rutgers.edu
Box 231, College Farm Road,
Rutgers University,
New Brunswick, NJ 08903, USA.
OR
Carine O'neil Email: coneil@ocean.rutgers.edu
Global Dataset Project Coordinator
same address
same phone/fax
(9) The Digital Bathymetric Data Base 5-Minutes (DBDB5) is a 5-minute lat-lon
grid, with grid cells are centred over lat-lon lines (for example, the
top row contains 4320 identical values of -4290 metres for the North
Pole). To obtain this dataset, contact:
Francis Marchan, Tel: (601) 688 4327
US Naval Oceanographic Office,
Stennis Space Centre,
Mississippi, 39522-5001, USA.
Another source for this data is the National Oceanic and Atmospheric
Administration's National Geophysical Data Center (NOAA/NGDC), as DBDB5
is the bathymetry in ETOPO5 (see Note (5), and is also contained in
TerrainBase (see Note 37).
(10) The GEBCO Digital Atlas covers the entire world. The main source was the
1:10M scale 5th Edition of the General Bathymetric Chart of the Oceans
but there are large areas such as the Mediterranean and the South
Atlantic which are based on scales up to 1:1M. The GEBCO Digital Atlas
is available CD-ROM. It contains contours (the smallest contour interval
is 100m), individually adjusted vector ship track data, special survey
boxes, geographical names of undersea features, World Vector Shoreline
and Tracks derived from the NGDC GEODAS dataset for comparison. Also
included is a full suite of display and output software. This will
provide output in DXF and GF3 formats.
The CD-ROM costs 99 Pounds (+ VAT for European Union customers) and is
available from:
Dr Meirion Jones / Ms Pauline Weatherall Tel ?
British Oceanographic Data Centre (BODC) FAX ?
Proudman Oceanographic Laboratory
Bidston Observatory
Birkenhead
Merseyside, L43 7RA
UK.
Email: BODC@unixa.nerc-bidston.ac.uk
(11) The Institut Geographique National (IGN) are the French national mapping
agency and their DEM data is available from:
Mr. Lutrot, Tel: +33 1 43.98.85.01
Institut Geographique National, FAX: +33 1 43.98.85.05
Departement Grand Clients
(Industrial Customers Dept),
BP 68 - 2, Avenue Pasteur,
94160, St Mande, France.
The DEMs are produced from a contour line database, by linear
interpolation. This database was built from 1:25000 map sheets
(exceptionally from 1:10000 level) and for some areas directly extracted
from aerial photographs at 1:60000 (mainly where the slope was too
important so that extraction of contour lines from maps would lead to
intersections). The basic coverage unit for these DEMs is the 1:50000
sheet (20 x 28 Km). They are distributed in a proprietary ASCII format
on a restricted use basis. The scale is customizable (75m mean, min 50m,
max 100m) from 1:25K and 1:50K. Derived DEMs are available (200m and
over). The vertical accuracy varies with the data source - 10m from 1:25K
maps, 40m from stereoplotting. Approximately 4 bytes are used per point
##### End of Part 2 of the Digital Elevation Catalogue (39861 bytes) #####
Subject: Digital Elev. Data Catalogue (1/5) [LONG!]
From: bruce@geovax.ed.ac.uk (Bruce Gittings)
Date: 1 Sep 96 00:03:28 GMT
##### Part 1 of the Digital Elevation Catalogue #####
CATALOGUE OF DIGITAL ELEVATION DATA LAST UPDATED: 15-AUG-1996
===================================
(c) Bruce M. Gittings, 1996.
This catalogue is available from the following sources:
- Posting on GIS-L / comp.infosystems.gis at the start of each month
- Through the World-Wide Web at URL http://www.geo.ed.ac.uk/home/ded.html
- By sending email to geoinfo@geo.ed.ac.uk containing the command
"SEND DEM"
This catalogue was compiled using my own information and the contributions of a
large number of helpful readers of GIS-L. It includes details of elevation and
bathymetric data, together with a section on available software for the display
and manipulation of these data. I would be very grateful for any corrections or
additions, which you can be assured will be of benefit to the whole community.
I am most grateful to the many individuals who have contributed. I have not
acknowledged individual names because some have specifically wished to maintain
their anonimity. If you supply me with material which, for one reason or
another, should have a name attached I am happy to do this. I also must
acknowledge the enormous help of Ernie Beale (msc9601@geo.ed.ac.uk) who has
put a lot of work into extending the catalogue.
Some additional information (e.g. electronic documents which were the source of
some of the information included here) are available by e-mailing our automatic
information server (geoinfo@geo.ed.ac.uk).
PLEASE read the COPYRIGHT NOTICE and DISCLAIMER at the end of this message (if
either of these are missing, then this posting is incomplete).
REG NAME/SUPPLR SCALE/RESOL'N VACm FORMAT SIZE COST MEDIA NOTE
--- --------------- ------------- ---- -------- -------- --------- ------- -----
WOR DCW 1:1M as ~650 VPF 600MB #200 CD (1)
1000ft
Contour &
Spot Heights
WOR EROS DCW-DEM 30"x30" DEM <650 Binary ? Free Mag (2)
Raster Tape
WOR NOAA NGDC / FNOC Elev., 9 2 Byte 28MB ~$100 CD CD (5)
NCAR 10' Terrn. & Integers
Surf. Char.
as 10 min
Grid
WOR National ETOPO5 5 min 9/1 2 Byte 18.5MB ~$100 CD CD (5)
Geophysical DEM Integers
Data Center
WOR Defense Mapping 90m/30m DEM 30 DTED-1 ~3MB per $600 Mag (6)
Agency (DMA) (see note) 1x1 Tape
degree
tile
WOR Global GRASS 4'48" Raster ? GRASS ? $300 CD (8)
Various
Files
WOR Digital 5' Raster ? ? ? Low(!) ? (9)
Bathymetry Cells
Database
WOR GEBCO 1:10M / 1:1M ? MGD77, ? #99 CD (10)
Bathymetry DXF, GF3
WOR Axys Software Various ? QUIKMap ? ? ? (21)
Ltd.
WOR MRJ Inc. Marine Data ? A/INFO <1 CD ? Mag (28)
Sampler Tape &
Disk
WOR Hamilton 5 min DEM ? 2 Byte 18.5MB $1195 Mag (35)
Exploration Integers Tape
WOR NOAA/NGDC Bathym. ? ? ? ~$80 CD (37)
WOR NOAA/NGDC Topo / Bath ? ? ? ~$80 CD (37)
5' DEM
WOR NOAA / #1029- 1 degree DEM $164 Mag (37)
A07-001 Tape
WOR NOAA/NGDC GLOBE 30" ? ? ? ~$80 CD (37)
DEM
WOR ISTAR SPOT Various from ? Various ? see note Various (43)
SPOT
WOR GETECH Enhanced <125 ? ? $1500 CD (44)
ETOPO5
WOR Technical Univ. 5'x5', 1-13.5 (78)
Graz 30'x30', 1 MB
deg x 1 deg
AFR EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
AFR ANU/CRES >1:1M <150 ASCII <1 CD AU$20 CD (47)
EUR EROS DCW-DEM 30" x 30" <30 Binary ? Free Mag (2)
DEM Raster Tape
EUR Bartholomews 1:1M ? A/INFO ? ~#4-500 ? (34)
Contours/ (others per
Bathymetry avail.) country
EUR GETECH 2.5' DEM ? ? ? $1500 CD (44)
(enhanced
ETOP05)
SAM GETECH 3' DEM ? ? ? ? CD (44)
(enhanced
ETOP05)
? ESRI Inc. Various Data ? ARC/INFO ? See Note ? (30)
Sets
ANT SCAR 1:200K to ? A/INF0 <1 CD #100 CD (29)
1:5M (PC)
ASI UNEP-GRID Hydrology (91)
AST BEV 25m, 50m DEM ? ASCII ? ATS53 per Mag (32)
km2 Tape,
Disk,
Exabyte
AUS AUSLIG Highest ? AUSLIG see note see note Mag (12)
Point Grid DEM Tape /
Disk
AUS AUSLIG Irreg. Spot ? ? ? AU$100 ? (12)
Heights per
1:250K
sheet
AUS AUSLIG 18" Grid 1 ASCII ? AU$150 ? (12)
(~500m) of per
above spot 1:100K
heights sheet
AUS AUSLIG 100m, 200m see note (12)
DEM
AUS AGSO 6' (~11 Km) 4-5 ? ? AU$750 ? (13)
Grid
AUS Dept. Env. Nat. +100m DEM ? 8 bit, 1 ? AU$400 CD (39)
Res. for Murray band
River
AUS ANU/CRES 3' or 1.5' ~10 ASCII ? AU$2000 & ? (48)
DEM Whole 5000
Country
AUS ANU/CRES 1' DEM ~10 ASCII ? AU$1500 ? (48)
(state)
AUS New South Wales 25m DEM (73)
LIC
AUS New South Wales 5m DEM >72K AU$100 & (73)
LIC points AU$20 /
km2
AUS DOLA Digital AU$20 700 (74)
Contour
Data
AUS Survey and ungridded 1:25 not fixed (75)
Mapping DEM
Victoria
AUS Bureax of 6' (11km) 4-5 400K (76)
Mineral DEM points
Resources (BMR)
AUS Lands S A 1:25K - 0.3- see note see note (77)
1:50K DEM
BEL IGN DTM L1 6"x3" or see see note ? 250,000 Mag (38)
3"x3" BFr Tape
BEL IGN 30m, 100m see note (38)
DEMs
BEL IGN DTM L2 2"x1" or see see note ? 500,000 Mag (38)
1"x1" BFr Tape
BEL IGN 1:10K and ? ? ? ? Mag (38)
1:20K tape
Contours (?)
BGD UNEP-GRID 5' 130 kb (91)
BLZ Land Info 20m contours <20 A/INFO Mag (85)
Center Belize Tape
BUR UNEP-GRID 5' 1.37 MB (91)
CAN EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
CAN Natural 1:250K ? IGraph ? CD$500 ? (20)
Resources Contours DGN per map
Canada file
CAN Canadian ? ? ? ? ? ? (23)
Hydrographic
Service
CAN Canadian 1:250K Great ? ? ? ? ? (24)
Hydrographic Lakes
Service, NOAA Bathymetry
Contours
CAN Comm. Data ~93m (3sec) ? Binary ? Dep. on CD (25)
Services Inc. DEM (DoD) qnty
CAN British 1:250K DEM ? ASCII ? CD$230 ? (26)
Columbia per sheet
CAN British 1:20K DEM ? ? ? CD$600 ? (27)
Columbia
CAN EDX Engineering Terrain Own & see note Disk, (46)
Elev. Data ASCII CD-ROM
CAN Ontario MNR 60m, 100m 2.5, (79)
DEMs
CAN Geomatics 100m DEM see note (86)
Canada
CBD UNEP-GRID 5' 480 kb (91)
CHI SIIASA Contours ? A/INFO, ? ? ? (14)
IGraph
MGE
CYP Cyprus Dept. of 1:100K ? ? ? ? ? (50)
Lands and Topography
Surveys
DEN Denmark Various ? ? ? ? ? (51)
raster topo.
DEN Denmark 1:500K, 1:1 ? DXF, ? ? ? (51)
Mio. topo. DSFL
DEN Denmark 1:200K Topo. ? DXF, ? ? ? (51)
DSFL
DEN Denmark 1:750K ? DXF, ? 8.000 Dkr ? (51)
Topography DSFL
DEN Denmark Digital ? ? DXF, ? ? ? (51)
Height Model DSFL
EEU see note see note see note (90)
FIN National Land 1:10K, 1:20K 2-5 ASCII 750kB 100 FIM ? (22)
Survey of per per
Finland 5x5km2 5x5km2
FIN National Land DEM 25x25 2-5 ERDAS, 750kB 1.50 FIM ? (22)
Survey of DISIMP per per km2
Finland 5x5km2
FIN National Land DEM 50x50 2-5 Rodika 750kB 1.50 FIM ? (22)
Survey of per per km2
Finland 5x5km2
FIN National Land 1:50 000 ? EDIFACT ? ? Mag (22)
Survey of Vector topo. Tape
Finland (1600)
FIN National Land 1:200K ? EDIFACT ? ? Mag (22)
Survey of Heights / Tape
Finland contours (1600)
FRA IGN 40m DEM 10 ASCII 350KB 16800 FF ? (11)
(from 1:50K per map per 1:50K
maps) sheet sheet
FRA IGN 50m 75m 100m see note (11)
250m 500m
DEMs
FRA IGN 1km DEM 30-3 3500 x 66000 FF (11)
4200
points
FRA IGN / BD 1:1 Mio. ? ? ? ? Mag (11)
Million Hypsom. Tape
(800 /
1600)
FRA IGN / MNT 6' x 4.5' 5-40 Mag (11)
DEM Tape
FRA IGN / BDZ see note 175 Mio. see note (11)
points
GDP IGN / BDZ see note see note see note (11)
GER Hessen Province 40m Grid or 2 ASCII ? $200 per Mag (15)
Irreg. km2 Tape &
Points Disk
GER Bavaria 50/100/200m 2-3 DXF, SQD ? 15DM per ? (36)
DEM km2
GER Bavaria / 1:500K ? SICAD- ? ? ? (36)
GEOGIS-500 SQD,
EDBS
GER Bavaria 1:25K / ? ? ? ? ? (36)
1:50K /
1:100K
Raster topo.
GER Bavaria ? (Contour 0.5 ? ? ? ? (36)
lines)
GER Bavaria / 1:25K Topo. ? SICAD- ? ? ? (36)
GEOGIS-25 SQD
GER Baden- 1:25K Topo. ? EDBS, ? ? ? (63)
Wurttemberg SICAD-
SQD
GER Baden- 50 x 50m 2-5 SICAD- ? 60,000 DM Mag (63)
Wurttemberg Spot heights SQD Tape
(1600)
GER Baden 50m DEM 2.3 ATKIS Mag (63)
Wuttenberg DHM Tape
GER Baden- 1:25K / ? ? ? ? ? (63)
Wurttemberg 1:50K Raster
topo.
GER Hamburg ? (Topo.) ? SICAD- ? ? ? (64)
SQD
GER Hessen 1:25K Topo. ? EDBS, ? ? ? (65)
IGraph
GER Hessen 100 x 100m 5 ? ? ? ? (65)
Spot heights
GER Hessen 40 x 40m 2 ? ? ? ? (65)
Spot heights
GER Hessen 1:25K / ? ? ? ? ? (65)
1:50K /
1:100K
Raster topo.
GER Mecklenburg- 1:25K Topo. ? EDBS, ? ? ? (66)
Vorpommern SICAD-
SQD
GER Mecklenburg- ? (Raster ? ? ? ? ? (66)
Vorpommern topo.)
GER Nordrhem 1:25K Topo. ? EDBS ? AdV-cost ? (67)
Westfallen frame-
work
GER Nordrhem 10 x 10m 0.3- ? ? AdV-cost ? (67)
Westfallen / Spot heights frame-
DGM10 work
GER Nordrhem 25m 1:5K ATKIS DM 30.0 / (67)
Westfallen / DHM km2
DTM5
GER Nordrhem >25m DEM 1:25 ATKIS DM40 / (67)
Westfallen / DHM km2
DTM25
GER Nordrhem 50 x 50m 2-5 ? ? AdV-cost ? (67)
Westfallen / Spot heights frame-
DGM50 work
GER Nordrhem 1:50K / ? TIFF, ? AdV-cost ? (67)
Westfallen 1:100K / Scitex frame-
1:500K Type 30 work
Raster topo.
GER Rheinland 1:25K Topo. ? EDBS, ? ? ? (68)
Pfaltz SICAD-
SQD
GER Rhineland 40 x 40m 2 ASCII, ? AdV cost Mag (68)
Pfaltz Spot heights EBCDIC frame- Tape
work (1600 /
6250),
Floppy
(5.25 /
3.5)
GER Rheinland 40m DEM 2-9 ATKIS DM 30566 Mag (68)
Pfaltz DHM Tape
GER Rhineland ? (Raster ? ? ? ? ? (68)
Pfaltz topo.)
GER Rhineland 20 x 20m 0.5 ASCII, ? AdV cost Mag (68)
Pfaltz Spot heights EBCDIC frame- Tape
work (1600 /
6250),
Floppy
(5.25 /
3.5)
GER Saarland 1:25K Topo. ? EDBS, ? ? ? (69)
SICAD-
SQD
GER Saarland / DGM5 1:5K 0.5 SCOP, ? ? Mag (69)
Contours EDBS, Tape
SICAD- (1600 /
SQD 6250),
Disk,
S.tape
GER Saarland / DHM5 20 x 20m 0.5 SCOP ? ? Mag (69)
Spot heights (KARTE00 Tape
1 / (1600 /
WINPUT) 6250),
in Disk,
ASCII/ S.tape
EBCDIC
GER Saxony 1:25K Topo. ? SICAD- ? ? ? (70)
SQD
GER Slesvig- 1:25K Topo. ? EDBS ? ? ? (71)
Holstein
GER Slesvig- ? (Raster ? ? ? ? ? (71)
Holstein topo.)
GER Slesvig- 12.5 x 12.5m 0.5 ? ? ? ? (71)
Holstein Spot heights
GER Thuringia 1:25K Topo. ? EDBS ? ? ? (72)
GER Thuringia 25 x 25m 5 ? ? ? ? (72)
Spot heights
GER Thuringia 25 x 25m 9 ? ? ? ? (72)
GNL Kort-og- 5'x10' DEM Nil Floppy (80)
Matrikelstyrels disk
en
GRE Military 1:5K ? A/INFO, ? 60K Gdr Mag (42)
Geographical Contours DXF, ASC per sheet Tape &
Service Disk
GRE Military 250m DEM ? A/INFO ? 5M Gdr Mag (42)
Geographical Tape &
Service Disk
HAI EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
HUN Hungary / DTM- 100 x 100m ? ? ? ? ? (53)
100 Spot heights
HUN Hungary / DTA- 1:500K ? DXF ? Bilat. ? (53)
500 agreem.
HUN Hungary / DTA- 50x50m Spot ? ? ? Bilat. ? (53)
50 heights agreem.
HUN Hungary / DTM- 1 x 1km DTM ? ? ? Bilat. ? (53)
1000 agreem.
HUN Hungry / DTM- 200 x 200m ? ? ? Bilat. ? (53)
200 DTM agreem.
HUN Hungary / DTA- 1:200K ? DXF ? Bilat. ? (53)
200 Topo., no agreem.
contours
IDN UNEP-GRID 5' 2,7 mb (91)
IRE Bartholomews 1:500K ? A/INFO ? ~#400 ? (34)
Contours
IRE OS Ireland 1:2 500 ? ? ? ? ? (54)
Raster topo.
IRE OS Ireland 1:10 560 ? NTF ? ? ? (54)
Raster topo.
IRE OS Ireland 1:126 720 ? NTF ? ? ? (54)
Contours
IRE OS Ireland 1:50K Topo. ? NTF ? ? ? (54)
ISR Survey of 25m, 50m see note (87)
Israel DEMs
ITA Istitutio 1:25K Topo / ? ? ? ? ? (55)
Geografico contours
Militare
Italiano (IGMI)
/ Serie 25
ITA IGMI / Serie 50 1:50K ? ? ? ? ? (55)
ITA IGMI 1:500K ? ? ? ? Mag (55)
tape
(1600)
ITA IGMI / Serie 1:250K Topo. ? ? ? ? ? (55)
250
ITA IGMI 20m DEM (55)
JPN EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
JPN SIIASA Contours ? A/INFO, ? ? ? (14)
IGraph
MGE
JPN Geological 280 x 230m ? ASCII 88shts x Free, CD (18)
Survey DEM ? small fee
Institute
JPN Geographical 250m DEM 3 ASCII ? Y9700 per Disk (19)
Survey floppy
Institute
JPN Geographical 50m DEM ? ASCII ? Y9700 per Disk (19)
Survey floppy
Institute
JPN Geographical 1:25K 3 ASCII ? $500 per Mag (19)
Survey Contours tape Tape
Institute
JPN Geographical 1:10K Point ? ASCII ? Y9700 per Disk (19)
Survey Heights floppy
Institute
KOR see note see note see note (90)
LAO UNEP-GRID 5' 420 kb (91)
MAL Dept. Surveying 15m, 30m see note (88)
& Mapping DEMs
MAL UNEP-GRID 5' 536 kb (91)
MEX EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
MEX Comm. Data ~93m (3sec) ? Binary ? see note CD (25)
Services Inc. DEM (DoD)
MEX EDX Engineering 3'' Terrain Own & $100 / Disk, (46)
Elev. Data ASCII file, CD-ROM
$12,000
whole
MRQ IGN / BDZ see note see note see note (11)
NET Topograf. 1:10K / ? ? ? ? ? (56)
Dienst 1:25K Topo.
NET Topograf. 1:50K Topo. ? ? ? ? ? (56)
Dienst
NET Topograf. 1:250K ? ? ? Bilat. Mag (56)
Dienst / Data agreem. Tape
File (800 /
1600)
NET Topograf. 1:100K Topo. ? ? ? ? ? (56)
Dienst
NET Topograf. 10m, 100m see note (56)
Dienst DEMs
NET Topograf. 3'x6' DEM see DTED #13,000 Mag (56)
Dienst Level 1 Tape
NET Topograf. 1:500K ? ? ? ? ? (56)
Dienst Topo.
NET Technical Univ. 3'x5' DEM +3.5 Nil Floppy (82)
Delft Disk
NIR OS of Northern 1:1250 ? NTF ? see note Mag (57)
Ireland Tape
(1600 /
6250)
NIR OS of Northern 1:50K ? NTF ? Bilat. Mag (57)
Ireland Contours agreem. Tape
(10m) (1600 /
6250)
NIR OS of Northern 1:100K Topo ? NTF ? ? Mag (57)
Ireland Tape
(1600 /
6250)
NIR OS of Northern 1:10K Topo. ? NTF ? ? Mag (57)
Ireland Tape
(1600 /
6250)
NIR OS of Northern 1:2500 ? NTF ? see note Mag (57)
Ireland Tape
(1600 /
6250)
NIR OS of Northern 1:250K ? NTF ? see note Mag (57)
Ireland Tape
(1600 /
6250)
NIR OS of Northern 50x50m ? NTF ? ? ? (57)
Ireland / DTED Height
Points
NOR Norwegian DEM 100 x 30 DTED-L1 ? Expens. ? (17)
Mapping 100m - lat-
Authority lon UTM
Coordinates
NOR Norwegian 1:250K ? ? ? ? ? (17)
Mapping
Authority
NOR Norwegian 1:1 Mio. ? ? ? see note Mag (17)
Mapping Heights, Tape
Authority contours (1600)
(300m)
NOR Norwegian >1:2 Mio. ? ? ? ? ? (17)
Mapping
Authority
NOR Norwegian 1:2 Mio. ? ? ? ? ? (17)
Mapping Topo.
Authority
NOR Norwegian 1:50K Topo. ? ? ? ? ? (17)
Mapping
Authority
NOR Statens 3'x6' DEM 30m DTED #63,337 Mag (83)
Kartverk Level 1 Tape
NZ DOSLI 1:50K 10 Various ? NZ$2000 ? (31)
Contours
NZ DOSLI 25m, 1km see note (31)
DEMs
PHI NAMRIA ? ? Raster ? ? ? (40)
PHI UNEP-GRID 5' 986 kb (91)
PTG Instituto 1:10K ? ? ? ? ? (58)
Geografico Contours
Cadastral / DTM (5m)
PTG Instituto 1:500K ? ? ? ? ? (58)
Geografico Topography
Cadastral /
Digital Map
PTG Instituto 1:50K Raster ? ? ? ? ? (58)
Geografico topo.
Cadastral
PTG Instituto 10m, 50m see note (58)
Geografico DEMs
Cadastral
REU IGN / BDZ see note see note see note (11)
SAF CDSLI 50 / 200 / ~10 NES ? ? ? (7)
400m DEM
SAF Univ. of Cape 5' (8km), 1' 25-9 Nil (84)
Town DEM
SPA Instituto 45m DEM (100 >2 ASCII 95MB 6.25Pts ? (16)
Cartografic de / 200m also per ha.
Catalunya available)
SPA Instituto 1:25K Topo. ? ? ? Bilat. Mag (59)
Geografico agreem. Tape
Nacional / (800 /
BCN.25 1600 /
6250)
SPA Instituto 200 x 200m ? ? ? ? ? (59)
Geogafico DTM
Nacional
SPA Instituto 1:200K ? ? ? ? ? (59)
Geogafico Contours,
Nacional / heights
MDT.200
SPA Instituto 1:25K ? ? ? ? ? (59)
Geogafico Contours,
Nacional / heights
MDT.25
SPA Instituto 1:200K Topo. ? ? ? ? ? (59)
Geogafico
Nacional /
BCN.200
SWE Swedish Space ? ? Raster ? ? CD (41)
Corporation
SWE Terrain 50 x 50m / ~2.5 ? see note Bilat. Mag (60)
Elevation Data 200 x 200m / agreem. Tape
Bank 500 x 500m
SWI Federal Office 250m DEM ? ? ? SFr 5890 ? (49)
of Topography (RIMINI)
SWI Federal Office 25m DEM (DHM ? ? ? SFr ? (49)
of Topography 25) 280000
SWI Bundesamt fur 1:25K ? ? ? ? ? (61)
Landestopo. /
LK25
SWI Bundesamt fur 1:1 Mio. ? ? ? ? ? (61)
Landestopo. / Topo.
LK1000
SWI Bundesamt fur 250 x 250m ? ? ? ? ? (61)
Landestopo. / Height
RIMINI points
SWI Bundesamt fur 25 x 25m ? ? ? ? ? (61)
Landestopo. / Height
DHM 25 points
SWI Bundesamt fur 1:500K Topo. ? ? ? ? ? (61)
Landestopo. /
LK500
SWI Bundesamt fur 1:50K Raster ? ? ? ? ? (61)
Landestopo. / topo.
LK50
SWI Bundesamt fur 1:100K ? ? ? ? ? (61)
Landestopo. / Raster topo.
LK100
SWI Bundesamt fur 1:200K Topo. ? ? ? ? ? (61)
Landestopo. /
LK200
THA NECTEC 1:250K ? A/INFO ? Free CD (45)
Contours
TUR Ministry of 1:25K ? DTED ? Not for ? (62)
National sale
Defense /
Digital
Elevation Data
TWN ? 100m DEM ? DTED 9 x 3MB Free ? (33)
UK OS 1:50K, 50m <3 NTF-L4 748KB #30 p.a. ? (4)
DEM per
20x20km
tile
UK OS 1:625K ? NTF ? ? Mag (4)
Topo., Tape
heights (1600 /
6250)
UK OS Large Scale ? ? ? ? Mag (4)
1:2 500 Tape
Vector topo. (1600 /
6250)
UK OS 1:50K 2-3 NTF-L1 ~1.5MB #30 p.a. ? (4)
Contours per
20x20km
tile
UK OS 1:10K ~1.5 NTF-L1 5x5km see note ? (4)
Contours tile
UK OS 1:10K DEM <2 Various 5x5km see note ? (4)
tile
UK Bartholomews 1:250K ~10 A/INFO 70 MB ~#2850 ? (34)
Contours (total) p.a.
UK EDX Eng. 50m DEM <2.5 Own & ? $22500 CD & (46)
ASCII (full disk
data set)
UK Military Survey 1:500K ? ? ? Bilat. Mag (52)
/ PACE Contours, agreem. Tape
heights (1600)
UK Military Survey 1"x1" Spot ? ? ? ? ? (52)
/ DTED heights
USA EROS DCW-DEM 30" x 30" <650 Binary ? Free Mag (2)
DEM Raster Tape
USA USGS 1 Deg ~93m (3sec) <61 DEM ~940 x $40 or ? (3)
DEM 9MB less
USA USGS 7.5' 30m DEM <15 DEM ~55000 x $40 or ? (3)
2MB less
USA USGS 30' ~62m (2sec) ? DEM ? $40 or ? (3)
DEM less
USA USGS 15' ~62m x 93m ? DEM ? $40 or ? (3)
DEM less
USA NOAA, Canadian 1:250K Great ? ? ? ? ? (24)
Hydrographic Lakes Bathy.
Service Contours
USA Comm. Data ~93m (3sec) <61 USGS DEM 2 CDs $5000 CD (25)
Services Inc. DEM (same as
USGS)
USA Hamilton USGS 7.5' ? AutoCAD ? $80-160 ? (35)
Exploration Layers per layer
USA NOAA NGDC Coastal ? ? ? ~$80 CD? (37)
Bathym.
USA NOAA / 30 30' DEM $407 Mag (37)
Second Data Tape
#168-A07-007
USA EDX Engineering 30m, 3'', Own & see note Disk, (46)
30'' Terrain ASCII CD_ROM
Elev. Data
VTN Nat'l Geodetic 1km DEM see note (89)
& Cartograhic
Service
VTN UNEP-GRID 5' 607 kb (91)
NB. DEM is used here to mean a regular gridded array of point heights
AFR = AFRICA ANT = ANTARCTICA ASI = ASIA
AST = AUSTRIA AUS = AUSTRALIA BEL = BELGIUM
BGD = BANGLADESH BLZ = BELIZE BUR = BURMA
CAN = CANADA CBD = CAMBODIA CHI = CHINA
CYP = CYPRUS DEN = DENMARK EEU = EASTERN EUROPE
EUR = EUROPE FIN = FINLAND FRA = FRANCE
GDP = GUADELOUPE GER = GERMANY GER = GRMANY
GNL = GREENLAND GRE = GREECE HAI = HAITI
HUN = HUNGARY IDN = INDONESIA IRE = IRELAND
ISR = ISRAEL ITA = ITALY JPN = JAPAN
KOR = KOREA LAO = LAOS MAL = MALAYSIA
MEX = MEXICO MRQ = MARTINIQUE NET = NETHERLANDS
NET = THE NETHERLANDSNIR = NORTHERN IRELAND NOR = NORWAY
NZ = NEW ZEALAND PHI = PHILIPPINES PTG = PORTUGAL
REU = REUNION SAF = SOUTH AFRICA SAM = SOUTH AMERICA
SPA = SPAIN SWE = SWEDEN SWI = SWITZERLAND
THA = THAILAND TUR = TURKEY TWN = TAIWAN
UK = UNITED KINGDOM USA = UNITED STATES VTN = VIETNAM
WOR = WORLD
' = Minute " = Second
# = UK Pounds $ = US Dollars AU$ = Australian Dollars
ATS = Austrian Shillings BFr = Belgian Francs
DM = Deutsch Marks
FF = French Francs Gdr = Drachmas
Pts = Spanish Pesetas CD$ = Canadian Dollars
FIM = Finnish Marks Y = Japanese Yen NZ$ = New Zealand Dollars
SFr = Swiss Francs
p.a. = per annum (ie. licence fee)
(npd)= Not public domain - ie. commercial product, restricted use, not
available via ftp.
NOTES
=====
(1) The Digital Chart of the World (DCW) was digitised under contract from US
Defense Mapping Agency (DMA) from their Operational Navigation Chart
(ONC) series. These maps are at a scale of 1:1M (except over Antarctica
where the scale is reduced to 1:2M). This is the largest scale
unclassified map series that provides consistent, continuous global
coverage of essential basemap features. It is composed of 17 thematic
vector layers which include political boundaries, coastlines, cities,
transportation networks, hydrography, landcover, hypsography and place
names. DCW can be purchased from:
UK/Europe: Chadwyck-Healey Ltd. Tel: (0223) 311479
Cambridge Place FAX: (0223) 66440
Cambridge CB2 1NR, UK.
US: USGS Open-File Section Tel: (303) 236-7476
##### End of Part 1 of the Digital Elevation Catalogue (39887 bytes) #####
Subject: Digital Elev. Data Catalogue (3/5) [LONG!]
From: bruce@geovax.ed.ac.uk (Bruce Gittings)
Date: 1 Sep 96 00:03:42 GMT
##### Part 3 of the Digital Elevation Catalogue #####
stored.
The Base de Donnuees Altimetriques (BDZ) contains 3' samples from 75m -
250m covering France, Guadeloupe, Martinique, Reunion produced from 1:25
000 and 1:50 000 maps. Cost for one department is 50 000 Francs for 75m
grid data and 270 000 Francs for 250m grid data.
Contact: A. Picot Tel: (1)43 98 80 20
NB. 1996: A more recent survey reveals that the following DEMs are
available which cover the entire national area at the
following prices (in US dollars):
Per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
1km $0.0288 $ 15,667 One-time License Fee
500m $0.0590 $ 32,118 " "
250m $0.1187 $ 64,569 " "
100m $0.3453 $187,724 " "
75m $0.4391 $238,863 " "
50m $0.6041 $328,627 " "
(12) Australian Data is available from the Australian Survey and Land
Information Group (AUSLIG). There are three products; M7 are Critical
Aeronautical Heights which represent the highest point in each 30'x30'
quad, M8 are Spot heights (ie. an irregular grid) and M9 represents an
18" (~500m) grid at 1:250,000 scale (gridded from M8 using an Hutchinson
Algorithm). Both M8 and M9 have incomplete coverage of the country.
The 500m grid covers 30% of Australia (Southern New South Wales,
Victoria, parts of Northern Queensland and selected cities). The size of
the 1:250 000 scale files is 60,501 points each x 63 files = 38,176,131
elevation points. Costs: License 1:250 000 AU$1000 / File 1:100 000
AU$250.
NB. 1996: 100m and 200m DEMs covering all of Australia are also now
available. Prices are as follows (in US Dollars):
Per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
100m DEM $0.0028 $21,433 One-time license fee
200m DEM $0.0017 $13,089 " "
AUSLIG are located at:
PO Box 2, Tel: + 616 201 4340
Belconnen, ACT 2616, FAX: + 616 201 4381
Australia.
URL: http://www.auslig.gov.au/welcome.htm
(13) The Australian Geological Survey Organisation (AGSO - formerly BMR)
provide a 6' (approx 10km) grid of the whole country. AGSO are at:
GPO Box 378, Tel: + 616 249 9111
Canberra, ACT 2601, FAX: + 616 248 8178 Australia.
This original DEM of Australia was calculated by Moore and Simpson (1982)
using the minimum curvature interpolation procedure of Briggs (1974)
applied to approximately 320,000 point elevations. These data were
measured during a continent-wide gravity survey conducted by the Bureau
of Mineral Resources (Anfiloff et al., 1976).
Though detailed enough to detect significant geological structures
Harrington et al., 1982), this DEM suffered from a number of acknowledged
limitations from the point of view of hydrological analysis. Extreme
heights were not well represented and the 6' resolution could only
support quite generalized drainage structures. The data were also known
to contain a number of errors.
Anfiloff, W., Barlow, B.C., Murray, A.S., Denham, D. & Sandford, R.
(1976) 'Compilation and production of the 1976 Gravity Map
of Australia'. Bureau of Mineral Resources. J. Austral.
Geol. Geophys. 1: 273-276.
Briggs, I.C. (1974) 'Machine contouring using minimum curvature'.
Geophysics 39: 39-48.
Harrington, H.J., Simpson, C.J. and Moore, R.F. (1982) 'Analysis of
continental structures using a digital terrain model (DTM)
of Australia'. Bureau of Mineral Resources J. Austral.
Geol. Geophys. 7: 68-72.
Moore, R.F. and Simpson, C.J. (1982) 'Computer manipulation of a
digital terrain model (DTM) of Australia'. Bureau Mineral
Resources J. Austral. Geol. Geophys. 7: 63-67.
(14) Spatial Information Infrastructure for Asian Studies in Australia
(SIIASA) is a consortium of 12 Australian universities lead by Griffith
University.
The aim is to establish GIS databases covering all of Asia, defined very
broadly to encompass the Near East, the Pacific Islands (possibly
including Papua New Guinea), and the ex-Soviet Central Asian Republics
and Asiatic Russia in addition to South, Southeast, and East Asian
countries.
The China GIS Project, established in 1989, is the pilot project for the
SIIASA databases. Its 1:1,000,000 vectorised map of the People's
Republic of China is nearing completion, and amounts approx. 0.5GB of
data. In addition to elevations, dense hydrology, detailed transport
routes and thousands of cities and towns, it includes an elaborate set of
land use polygons covering the entire PRC. County-level administrative
boundaries for the entire country, which will be used initially for the
spatial analysis of 1990 census materials, are being extended back to
October, 1949.
Apart from China and Japan, the base map for the SIIASA spatial databases
will be the 1:1M Digital Chart of the World, with larger scale spatial
data incorporated where available and needed to service regional research
interests. The digitising of China was started before the DCW became
available. Japan was digitised because of deficiencies in the DCW data,
particularly the contour information. Also 1000' contours were too
sparse for some of the potential database applications in that country.
Thus, contours in metres are being digitised for Japan at the following
heights; some 20s and 50s, 100s, 200s, some 300s, 500s, some 700s, 1000s,
and then upwards at 500 metre intervals. This digitising is almost
finished.
For all China there are spot elevations (in metres) that are somewhat
less dense than those on the ONCs. For about a third of the country
(mainly in the South-east) there is another set of spot elevations and
contours at 25, 50, 200, 500, and then upwards at 500 metre intervals.
The digitising of these sheets will take until the end of 1993. As soon
as the other sheets of the "1:1,000,000 Map of China" has been published
by the Xi'an Cartographic Publishing House (it is not known when this
will happen), the remainder of the country will be completed.
For further information and to access the data contact:
Dr. Lawrence W. Crissman, Tel: (07) 875-7285
Asian and International Studies, FAX: (07) 875-5111
Griffith University, Email:CRISSMAN@ASIAN.GU.EDU.AU
Nathan, QLD 4111,
Australia.
(15) For the German state of Hessen (Bundesland Hessen) the
'Landesvermessungsamt' provides a DEM. Its either a 40m grid or
unprocessed irregular data with an accuracy down to 2m. Its price is
approx. 200 Deutschmarks per Km2. Data comes on 3.5" disc or tape in
tabular ASCII format from:
Hessen Landesvermessungsamt, Tel: +49 611 535-0
Scharperstrasse 4,
Postfach 3249,
6200 Wiesbaden 1,
Germany.
Other DEM-Data may be obtained from:
Inst. fur Angew. Geodasie, Tel: +49 69 6333-1
Richard-Strauss-Allee 11,
6000 Frankfurt am Maine 70,
Germany.
(16) The Institut Cartografic de Catalunya has a DTM of the Catalonia region
of Spain. The data is in grid format but it mostly comes from
interpolation of a TIN (the TIN is not available). The data was captured
from aerial photogrammetry at 1:22000 scale using analogue and analytical
stereo-comparators. VACm depends on morphology for interpolated points
and is difficult to establish but measured points are better than 2m.
Price depends on resolution. The 1992 prices where:
45m DEM 6.25 Pesetas per Hectare (10000 square metres)
100m 1.25 Pesetas per Hectare
200m 0.35 PesetaHectare
(These prices are equivalent to 1.25 Pts per point)
The whole of Catalonia has an area of 32000 sq. km., giving a maximum
size of 95MB for the data.
Orders should be sent to:
The Director, Tel: (343) 218 87 58
Institut Cartografic de Catalunya, FAX: (343) 218 89 59
Balmes, 209-211 Telex: 98471 ICCB E
08006-Barcelona, Spain.
(17) Norway, like all NATO countries, is covered by the DLMS (Digital Land
Mass System) DTED elevation model. For Norway DTED is availiable in lat-
long UTM coordinates (resolution of 100 by 100 meters). See also Note
(6).
Norway also has topography data for 1:50 000, 1:250 000, 1:2 Mio. (called
the "Nordic Data Base") and >1:2 Mio. (called the "Small Scale
Database").
They also have a "Base map for Thematic Mapping" dataset which consists
of 300m contour/attribute data at 1:1 Mio (complete availability - no
cost; for government agencies). Attributes covered are hydrology,
boundaries, roads, railroads, administrative centres, catchment areas and
population distribution. Elements contained are vectors, heights,
feature codes and municipality reference numbers. This dataset covers
the geographical extent: 58 N...72 N ; 5 E...33 E. Coordinate system
used is UTM Zone 33 extended.
For more information contact:
Norwegian Mapping Authority, Tel: +47 321 18100
(Statens Kartverk), FAX: +47 321 18101
N-3500 Honefoss, Norway.
(18) The Japanese Geological Survey offer a DEM as part of the Digital
Geological Map of Japan on CD-ROM (released January 1993). Approx. 28MB
of raster data includes the DEM, geology, faults, rivers, density and
magnetic susceptibility of rock samples. There are approx. 88 raster
mesh-maps, corresponding to one for each sheet in the 1:200000 map series
for Japan. The resolution of each mesh is approximately 280m x 230m.
This DEM is more accurate than can be generated from the Digital Chart of
the World - see Note(1) - but less accurate than the GSI DEM data - see
Note(19). Source code for a program to display these mesh-maps (on a NEC
9801 series personal computer - a curiosity found only in Japan) is
included.
The geological map itself is a digitised version of both the 2nd and 3rd
editions of the 1:1M Geological Map of Japan, occupying approx. 52MB.
Coast lines, geological units and fault lines are included and are stored
in both DLG format and ARC/INFO 5.01 export format The coordinate system
for all data is Lat/Lon.
GSJ has a very open policy about data distribution and use. I believe
the data is free to universities, government or non-profit organizations.
Commercial users may be subject to a small fee.
For further details contact:
Dr. Norio Matsumoto Tel: +81 298-54-3643
Computer Geoscience Section FAX: +81 298-54-3643
Geological Survey of Japan Email: norio@gsj.go.jp
Tokyo, Japan.
(19) In conjunction with the National Land Agency, the Japanese Geographic
Survey Institute (GSI) has been maintaining and providing limited access
to digital geographic data since the late 1980's. Data includes
coastlines, topography, landuse, administrative boundaries etc. at a
scale of 1:25 000 for total or near total national coverage. This data
is called "Kokudo Suchi Joho" (National Digital Information) but its use
is limited to governmental, academic and public organizations. The data
is distributed on 1/2" magnetic tape. It has an open, fully documented
(in Japanese) structure. Each tape costs about US$ 500. For more
information see the article on GIS Activities in Japan, by T. Waza, in
the 1993 GIS World Sourcebook (IBSN #0-9625063-2-X).
In May 1993 the GSI introduced a series of "low" priced map data onto the
Japanese market. There are now four distinct datasets available; vector
at data at 1:25000 and 1:10000 and 50m and 250m DEMs. Please note that
these new datasets are called "Kokudo Suchi Chizu" (National Digital Map)
and should not be confused with the previously released "Kokudo Suchi
Joho."
The 1:25 000 scale vector data covers the entire country in 86 datasets,
arranged by 1:200K map sheets. The 1:25K data includes coastlines,
rivers, lakes, administrative boundaries and text labels, but not height
data! The 250m DEM covers the country in 88 data sets. This DEM has a
cell size of 7.5" x 11.25" (approx. 250 m) which coincide with the 1:200K
scale topographic maps. There are 320 rows and columns in each DEM.
The 1:10 000 scale vector data presently covers major urban areas and
includes coastlines, rivers and lakes, a wider range of political
boundaries than the 1:25K data, transportation features and point data
representing imporant buildings and geodetic benchmarks. The geodetic
benchmarks include National Geodetic Survey triangulation points,
traverse points, regular benchmarks and spot elevation points. There are
currently 213 sheets of the 1:10K data, of which 40 were completed in the
last year. There are at least another 50 sheets currently in preparation.
It is suggested that the 1:10000 data is in a different projection than
the 1:25000 data.
The 50m DEM has a cell size of 1.5" X 2.25" (approx. 50m) which coincides
with the standard 1:25K scale topographic maps. There are 200 rows and
columns in each DEM. The Z values are quoted to 1mm (somewhat over-
accuracy?). Some 258 DEMs are currently available at this resolution
covering 40% of the national area. It is believed that this is the most
accurate digital elevation data available for Japan.
All data is in GSI's own ASCII format (vector or grid) which is
documented with the data (in Japanese, but the format is not difficult to
decipher). Character records are written using the Shift-JIS Codeset and
contain kanji or double-byte character data. Datasets are distributed on
either 3.5 or 5.25 inch high density floppy disks in MS-DOS format. Each
disk costs JPY 9700, or about US$ 92. No quantity discount is available.
There is usually one map sheet or DEM per floppy disk, but this is not
always the
case. For example, with map sheets the number depends on data density.
This Suchi Chizu data is available through the GSI's distribution
centre:
Japan Map Center Tel: +81 3-3485-5418
(Nihon Chizu Center) FAX: +81 3-3465-7689
4-9-6 Aoba-dai, Meguro-ku
Tokyo 153, Japan.
With regard to copyright or data reformatting issues, contact the Japan
Map Center directly, in writing.
GSI themselves are at:
Geographic Survey Institute
305 Kitasato 1
Tsukuba-shi
Ibaraki 305, Japan.
For those interested in translating GSI data into ARC/INFO, a translator
is available from PASCO the Japanese ARC/INFO distributor. Contact:
Reese W. Plews Tel: +81 3 3715 1601
PASCO Corporation FAX: +81 3 3715 1607
Systems Engineering Center Email: rplews@pasco.co.jp
13-5, 2-Chome Higashiyama
Meguro-ku, Tokyo 153
Japan.
(20) Natural Resources Canada (formerly Energy, Mines and Resources Canada)
produce digital maps at 1:250 000 scale for all of Canada. Some areas
available at 1:50,000 scale. The contact is Mike Sheppard at:
Natural Resources Canada Tel: (613) 995-4943
Canada Centre for Mapping
615 Booth Street
Ottawa, Ontario
Canada K1A 0E9.
It is suggested that the NRC maps are not really in very good shape (they
have been scanned and vectorized, but not much more). Some of the
provinces (including British Columbia and Alberta) have cleaned up these
maps and converted the contours into a DEM. To get these, it is
necessary to contact each individual government (there are 10 provinces
plus two territories), and some won't have them.
See also Note (21) and (26).
Natural Resources Canada should also have data at the following
resolution and locations in DTED Level 1 format on magnetic tape:
0-50 degrees lat: 3'x3'
50-70 degrees lat: 3'x6'
75-80 degrees lat: 3'x12'
80-90 degrees lat: 3'x18'
The accuracy of this data is 930m circular error (90%) and 30m vertical
error (90%). The data source is 1:250 000 maps and aerial photos. The
cost is CD$257.50 per cell (1068 cells=CD$275,010) (1992 prices).
(21) This Canadian company redistributes data from the US Natonal Topographic
Information Service (NATIS) in AXYS's own QUIKMap GIS format. These data
come in four files:
1. Asia & South Pacific
2. Europe & Africa
3. South and Central America, Mexico & Antarctica
4. North America
For more details contact:
Axys Software Ltd. Tel: (604) 656-1922
P.O. Box 2219 FAX: (604) 656-4511
2045 Mills Road
Sidney, British Columbia
Canada V8L 3S8.
The original NATIS files are available from:
U.S. Department of Commerce Tel: (703) 482-5404
National Technical Information Service
5285 Port Road
Springfield, VA 22161, USA.
AXYS also has digital hydrographic charts of South & Central British
Columbia. AXYS obtains digital data (not sure whether contours or DEM)
from National Topographic Survey (NTS) in Canada for resale in AXYS's
QuikMap format. I assume data are contours as a separate layer but not
certain. The original NTS data is available from Energy, Mines &
Resources Canada (Canada Centre for Mapping) at their address in Note
(20) above.
(22) The 25x25 and 50x50 metre products have the same source data (ie.
1:10 000/1:20 000 contours) but the interpolation method differs. The
contours have been produced mostly at a scale of 1:10 000 but a scale of
1:20 000 is used in Lappland (Northern Finland). (The published
topographic map is at a scale of 1:20 000). In terms of formats; DISIMP
is an Australian image processing package. Rodika is a special format
that has been used for producing elevation data for Finnish Telecom. RAW
means raw raster data without any headers.
For more information contact:
Tapio Siltala Tel: +358 0 154 5579
National Land Survey of Finland FAX: +358 0 154 5454
Geographic Data Centre Email: tapio.siltala@mmh.fi
Opastinsilta 12 C
P.O. Box 84
FIN-00521 Helsinki
FINLAND
1:50 000 vector topographic data and and 1:200 000 data of vector/height
contours is also available. The data uses the Gauss-Kruger coordinate
system with central meridian 27. The 1:200 000 data also covers
coastlines and road networks.
(23) The Canadian Hydrographic Service has hydrographic and terrestrial
digital maps at various scales. No further details are available at
present.
Canadian Hydrographic Service Tel: 613-998-4931
1675 Russell Road
Ottawa, Ontario
Canada K1G 3H6.
(24) The Canadian Hydrographic Service and NOAA in the U.S. have embarked on a
joint bathymetric mapping programme to cover the Great Lakes at a scale
of 1:250000. These will be contour formatted maps. For further
information there are two key contacts, one in each country. In the U.S.
it is:
Troy Holcombe Tel: 303-497-6390
National Geophysical Data Centre NOAA FAX: 303-497-6513
325 Broadway
Boulder, Colorado 80303-3328, USA.
In Canada contact:
John Warren Tel: 613-943-8049
Canadian Hydrographic Service FAX: 613-996-9053
615 Booth Street
Ottawa, Ontario
Canada K1A 0E6.
(25) Communications Data Services, Inc. sells all Canadian 3 second data
through a contract with Natural Resources Canada. They also sell Mexican
3 second data (whole country available). They have all these data in
house and can distribute on CD-ROM, 8mm tape and via the internet. Prices
depend on quantity. The Canadian & Mexican data are in a binary (DOD)
file format. In addition, they have the standard USGS 3 second data.
The whole country is available on CD-ROM, in the original USGS ASCII file
format for $1400, or in CDS's proprietary format (for the communications
industry) for $3000. Alaska in USGS format is an additional $450. They
will also sell a minimum of 6 blocks.
They are putting up an FTP server for "a few of the other things of
interest we have found over the years". They have some sample Canadian
data files which they are allowed to distribute freely. More details
when this service is available.
More information from:
Rich Biby Tel: (703) 534-0034
Communications Data Services, Inc. (800) 441-0034 (US- Only)
6105-E Arlington Blvd FAX: (703) 534 7884
Falls Church, VA 22044, USA. Email: rich@comm-data.com
(26) The government of the British Columbia province of Canada have taken the
vector 1:250000 data from the federal government in Ottawa (Natural
Resources Canada, see Note (20)) and improved it. At this scale, 84 map
sheets are required to cover the province. These sheets contain
hydrography, transportation, utilities, contours, a DEM, and place names.
The data are in UTM projection and the NAD83 datum, and are provdied
with good documentation.
These data are available from:
MAPS-BC Tel: (604) 387-1441
Ministry of Environment, Lands and Parks
Surveys and Resource Mapping Branch
4th Floor, 1802 Douglas Street
Victoria, B.C. V8V 1X4
Canada.
(27) There is another source of DEM data for the British Columbia province of
Canada called TRIM (Terrain Resource Information Management). This a
mapping project producing 1:20000 DEM maps. About 50% of the province is
currently covered. Contact:
Maps BC Tel: (604)387-1441
Ministry of Lands and Parks
Surveys and Resources Mapping Branch
Parliament Buildings
Victoria, B.C. V8V 1X4
Canada
(28) MRJ Inc. sell a variety of marine data. This includes a Marine Data
Sampler which covers all the oceans. Two areas are presented in more
detail; the outer banks of North Carolina and Monterey Canyon off
California. The sampler comes in Arc/Info format on UNIX or DOS format
CD-ROMs.
MRJ can provide customised marine data including bathymetry, ocean
chemistry and climatological data. These data generally originate from
government agencies. The resolution of bathymetry varies depending on
geographic region. Global data are provided as points or 5-minute grids.
MRJ can provide 15-second grid bathymetry for the US continental shelf.
Sounding information is also available for many US coastal areas. Data
are supplied on 1/2" tape and floppy disks. For further details
contact:
Mr. Clay Brown tel: (703) 277-1746
MRJ, Inc.
10560 Arrowhead Drive
Oakton
VA 22030, USA
(29) The Antarctic Digital Database (ADD) represents the first seamless
digital map of Antarctica. It includes the most up-to-date and complete
coastline of the continent in digital form, together with a number of
other data.
The ADD, covering the area south of latitude 60S, has been prepared by
the British Antarctic Survey (BAS), the Scott Polar Research Institute
(SPRI) and the World Conservation Monitoring Centre (WCMC) under the
auspices of the Scientific Committee on Antarctic Research (SCAR). The
database has been compiled from maps published by 11 nations (Argentina,
Australia, China, Germany, Japan, New Zealand, Norway, Poland, Russia, UK
and USA). The scale of source material has ranged from 1:200K to 1:5M
and the coastline has been up-dated using satellite imagery at 1:1M.
All data are on the Polar Stereographic projection with a standard
latitude of 71S, and a central meridian of 0. The coordinates are single
precision (up to seven digits for each co-ordinate) and are in metres
with the origin at the South Pole. The spheroid used is GRS80.
The database includes a detailed dataset, comprising data at the original
scale of the source material and data generalized to 1:1M scale. This
contains most information published on medium-scale and smaller-scale
maps of Antarctica. In addition there are generalized datasets at scales
of 1:3M 1:10M and 1:30M. The data are subdivided into layers showing
coastlines, cliffs, contours and elevation points, rock outcrops, faunal
locations, glaciers, ice domes, glacier flowlines and margins, moraines,
streams, lakes, place-names, research stations, major traverse routes,
protected areas and historic monuments. The contours have a height
attribute from which DEMs can be generated.
The data is in PC Arc/Info format on a single MS-DOS formatted CD-ROM.
Copies are available at GBP100.00 (US $150.00), including postage from:
SCAR Secretariat Tel: (0223) 62061
Scott Polar Research Institute FAX: (0223) 336549
Lensfield Road
Cambridge CB2 IER
United Kingdom
BAS have detected a few corrupt coverages on the Antarctic Digital
Database CDs, apparently caused by network errors during the last copy
operation. They have made correct versions of corrupt coverages
available through anonymous ftp, on ftp://bssiaa.nerc-bas.ac.uk. The
data are in pub/add, and there is a README file giving details of what is
there. To date, there are only three coverages affected, but BAS will be
happy to make available any others that user find to be in error. If you
are having problems, contact:
Paul Cooper, GIS Manager
British Antarctic Survey
Email: aprc@pcmail.nbs.ac.uk
(30) ESRI (the vendors of the ARC/INFO GIS software) have a venture called the
ArcData Publishing Program which aims to make data from third party
publishers available to users of their software. These data sets are
delivered in ARC/INFO-compatible format and include ARC/INFO coverages,
attribute tables, images and surfaces. Topographic data includes DTMs,
DEMs and contours. Data come from several sources, including satellite
imagery, aerial photography and digitized contour maps and most are
available in different projections and datums. The ArcData publishers
offering these data will search their imagery archives to find optimal
source stereopairs and acquisition dates to meet your needs.
ArcData can be ordered via the individual suppliers or through:
Desktop Order Center Tel: 909-793-2853 x2052
Environmental Systems Research 1-800-447-9778 (US Only)
Institute (ESRI) Inc. Email: desktop@esri.com
380 New York Street
Redlands
CA 92373, USA.
A (free) copy of the ArcData Catalogue can be obtained from the same
address. The catalogue and further details of available data are also
accessible through the internet via anonymous ftp to ftp://
redlands.esri.com (Numeric IP address is 198.102.62.1). Logon as
"anonymous" and give your email address as the password. Look for the
files "readme.txt" and "catalog.txt" (the latter is large) in the
directory /pub/arcdata.
Details of some of the major suppliers of elevation data through the
ArcData programme follow.
ERDAS can produce highly accurate DEMs and ortho-images from satellite
imagery and aerial photographs. These are available in standard map
sizes or can be tailored to meet specific needs. ERDAS digital ortho
products are available worldwide in the UTM coordinate system, and for
the United States in the State Plane coordinate system. Data are
supplied on media including exabyte, 1/2" tape and possibly floppy disk.
For further details contact:
Product Services Manager Tel: (404) 248-9000
ERDAS Inc. FAX: (404) 248-9400
2801 Buford Highway
Suite 300
Atlanta
GA 30329-2137, USA.
American Digital Cartography offer digital contour data digitised from
USGS 1:24,000 scale contour separates for the USA delivered in 7.5 minute
quadrangles. However, the total number of digitized 1:24K contour maps
probably numbers in the hundreds, a fraction of the 50,000 plus maps that
are in print. Although ADC can scan and vectorized topo separates, their
main procedure is to acquire 7.5 minute DEM and contour it. Since, in
many cases, this DEM is generated from contours taken from a paper map
(by one of three different procedures), the new contours are really
second order. See Note (3) for more details.
Several parts of the US have substantial 1:24K digital contour coverage
that was obtained from scanning and vectoring 7.5 minute maps. For
example, much of north-central Nevada is done because this is the area of
active gold mining. It is reported that the entire state of Washington
is done and will be available next year from the USGS.
ADC also offer 1-Degree (1:250K) and 7.5 minute (1:24K) USGS DEMs and
topographic contour data as part of their WorldMap(R) which is digitised
largely from the DMA's 1:1M Operational Navigational Charts (ONC). Data
are available on media which includes CD-ROM and floppy disks. For
further details contact:
American Digital Cartography Inc. Tel: (414) 733-6678
3003 W. College Avenue FAX: (414) 734-3375
Appleton
WI 54914, USA.
[See Also Note (43) regarding SPOT-IMAGE data]
(31) A terrestrial digital elevation database of New Zealand is sold by the
New Zealand Department of Survey and Land Information (DOSLI). The
database is continuous and edgematched covering all of New Zealand except
around Fiordland where modern mapping is yet to be completed. It is
essentially created from the contours taken off the 1:50 000
topographical maps, which have a 20m contour interval. The database is
held as 3D lines fully quality assured. DOSLI generate DEM data on
demand from this data source.
The vertical accuracy of this database is given as 10m (which represents
+/- half the contour interval). The xy accuracy is given as 22m.
The DEM's are provided in user defined formats. A list of existing
options is available if required. The data is released under licence and
costs NZ$2000 for 1200 sq. km. plus NZ tax if purchased in NZ. DOSLI
photogrammetrists will capture DEM data to higher accuracies on demand on
fully recovered costs basis.
Other data sets exist from smaller scale mapping but are usually only a
subset of the larger scale mapping. For example, there is contour
information available with a 100m interval.
NB. 1996: A recent survey quotes the following prices for 25m and
1km DEMs which cover the entire national area (in US
dolars):
per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
25m DEM $1 $265,175 One-time license fee
1km DEM $0.2 $ 53,055 " "
For further information contact:
Geoff Howard Tel: 64 4 471 0380
Director Topographic Database FAX: 64 4 495 8450
Department of Survey Email: geoffh@dosli.govt.nz
and Land Information
Private Box 170
Wellington
New Zealand.
(32) A DEM covering all of Austria was produced in the late 1980's and this is
currently being revised to improve quality.
The source is photogrammetric N-S profiles (which were collected with the
primary aim of orthophoto production). The original profile distance
varies between 30 and 160m, but this was resampled to the resolution of
50m. The DEM is georeferenced to the Austrian National Grid
(Bundesmeldenetz), which is a Gauss-Krueger (Transverse Mercator) system
covering all of Austria in three meridional sections.
There are two ASCII formats available; either WINPUT (x,y,z) or DTMX
(blocked "z" matrix), both of these are from the SCOP DTM software.
Documentation is available. The data is available on diskettes, 9 track
tape or Exabyte cartridges. The cost of ATS 53 per sq. km is subject to
an additional handling fee of ATS 2000.
N.B. 25m data should now be available.
The data can be ordered from:
Bundesamt fuer Eich- Tel: +43-1-438935
und Vermessungswesen (BEV) FAX: +43-1-439992
(The Austrian National Mapping Agency) Ask for:
Landesaufnahme "Gelaendehoehendatenbank"
Krotenthallergasse 3
A-1080 Wien, Austria.
A raster topography dataset covering all of Austria is also available
from BEV. The data is georeferenced to a Gauss-Krueger (Transverse
Mercator) system. The data format and the availability of English
documentation are unknown. The data is available on magnetic tape and
cost is arranged through a bilateral agreement.
The data can be ordered from:
Bundesamt fur Eich-Tel: ?
und Vermessungswesen (BEV)Fax: ?
(The Austrian National Mapping Agency)
Schiffamtsgasse 1 - 3
A-1025 Wien
(33) Todd Rothermel has created DTED files of the whole island of Taiwan,
including some outlying islands. There are a total of 9 files, each one
degree by one degree or 1201 x 1201 gridded values. The accuracy is good
for 100m grid post spacing.
Todd is happy to send these files to whoever may need them. He says he
cannot guarantee accuracy and neither he nor his company take any
responsibility for the use of these files.
To obtain the files, or for further details, contact:
Todd Rothermel Tel: 1-610-354-7299
Martin Marietta FAX: 1-610-962-2647
PO Box 8048 Email: rotherme@mdso.vf.ge.com
Bldg 10 MS G
Philadelphia, PA 19101, USA.
NB. 26-DEC-1995: Due to a job change these files are no longer being
distributed by Todd Rothermel.
(34) Bartholomews are at:
12 Duncan Street Tel: 031 667 9341
Edinburgh, EH9 1TA FAX: 031 662 4282
United Kingdom.
Other formats (e.g. Atlas*Graphics, DXF) can be provided.
The European 1:1M database now includes the European Union (EU) plus
Scandanavia & Eastern Europe. Cost is #355 per small country to #492 for
large countries. Prices for the whole of Europe are also available.
Ireland is now part of the Europe 1:1M database, although actually
captured at 1:500K and previously named Ireland 1:500K database.
The Great Britain 1:250K Database (doesn't include Northern Ireland thus
not the "UK" database - NI is part of the Ireland (now European database)
costs #2850 or #65 per 100km National Grid tile. Horizontal accuracy +/-
200m. Vertical accuracy is approx. +/-10m - but depends on how you take
account of horizontal displacements. The size is 70mb in Arc/Info
format.
Discounts are normally available for educational establishments. For
research and teaching (excluding commercial research) the data can be
obtained at very low prices through CHEST at Manchester University
Computing Centre (Tel: 061 275 6099). Higher education users in ALL
European countries excluding the former Warsaw Pact area (for the time
being) may obtain data through CHEST following a new deal.
(35) Global land and seafloor elevations exist as a grid with a spacing of
five arc minutes of latitude by five arc minutes of longitude. This data
undoubtedly is a version of the ETOPO5 data described in Note (5). The
complete data base is 9,400,000 grid values on magnetic tape. Data
values are given as 16 bit integers. Each 8640 byt contains all data
values for a five minute band of latitude arranged in order of increasing
eastward longitude. The data base contains 2160 blocks, starting at the
North Pole of the Earth and stepping southward. Available as normal or
VAX byte-swapped binary format. The data is available in binary or ASCII
formats on 1600 or 6250 bpi magnetic tape at $1195.
Also available in ASCII on IBM-formatted floppy disk as a 5 degree quad
at 5 arc second resolution for $75 or a one degree quad at 12 arc second
resolution for $195 (designate the SW corner of the required quad in each
case). Data may be redistributed for non commercial purposes only.
The following data are available for each USGS 7.5' quadrangle. Data is
arranged and sold by layers. Files are in AutoCAD format. Data is under
copyright.
Basic roads.............. $80 Enhanced roads.......... $100
Double line roads....... $150 Geographic names......... $40
County Lines............. $80 Township Range and Section Lines...
$80
Contours................ $160 Terrain Relief Grid..... $160
Quicksurf Compatible x,y,z ascii... $160
Reservations have been expressed with regard to the contour data, which
is thought to be contoured from the USGS 7.5' DEM. Since this in many
cases this DEM is generated from the contours taken from a paper map (by
one of three different procedures), the new contours are really second
order.
For further details contact:
Hamilton Exploration Email: 3326954@MCIMail.com
PO Box 5381
Virginia Beach
Virginia 23455, USA.
(36) The German state of Bavaria (Bayern) is currently implementing a
topographic database called GEOGIS using Siemens Sicad GDB software.
This will hold a variety of topographic layers and will be compatible
with the German standard land information system ATKIS (Amtlich-
Topographisch-Kartographische Informationssystem).
The GEOGIS database is a vector database containing layers for topography
geodetic/cartographic information, settlements, road infrastructure,
##### End of Part 3 of the Digital Elevation Catalogue (39870 bytes) #####
Subject: Digital Elev. Data Catalogue (4/5) [LONG!]
From: bruce@geovax.ed.ac.uk (Bruce Gittings)
Date: 1 Sep 96 00:03:48 GMT
##### Part 4 of the Digital Elevation Catalogue #####
water bodies and rivers, vegetation and administrative boundaries. Two
GEOGIS datasets exist; GEOGIS-25 at 1:25K and GEOGIS-500 at 1:500K.
Complete coverage is available of GEOGIS-500, produced from existing
1:500K maps. GEOGIS-25 layers are still being produced, with planned
completion in 1996. The data source is 1:23K aerial photography. I have
no details as to the form of the topographic layer (whether contours or
spot heights) nor
accuracy or size details.
Data is generally in the Gauss-Krueger co-ordinate system and is
available in either DXF, SICAD-SQD or (for GEOGIS-500 only) EDBS format.
The GEOGIS 500 data is sold per layer for the whole of Bavaria, prices
are 1000 dm for admin. boundaries and 3000 DM for water bodies/rivers.
GEOGIS-25 data is sold by layer in sq. km. tiles; prices are between 1
and 3 DM per tile. The DEM (called DGM-25) is held at 50m resolution,
but is also available at 100 and 200m. The data source was stereo-
photogrammetery. The 50m data costs 15 DM per sq. km., the 100m data 5
DM/sq. km. and the 200m data 3 DM/sq. km. Another dataset which consist
of 20m spaced points is also available (called DGM-5) at 65 DM per sq.
km. Additional topographic data is also available as rasters at 1:25K,
1:50K and 1:100K.
All prices quoted relate to May, 1993. The minimum order is for 300 DM.
Further information from the state surveying office
(Landesvermessungsamt):
Bayerisches Landesvermessungsamt Tel: +49 89 2129-1740
Alexandrastrasse 4 FAX: +49 89 2129-1537
D-80538 Munchen
Germany.
(37) A range of Global and regional terrain and bathymetric datasets are
distributed by the National Oceanic and Atmospheric Administration's
National Geophysical Data Center (NOAA/NGDC).
They have 30' data covering the USA (also available averaged to 1' and 3'
grids as well). The data source is 1:250 000 maps and costs $407.
Bathymetric data includes point bathymetric soundings and gridded data
for U.S. coastal waters. In addition images of parts of the ocean
bottoms are available.
Substantial information about NGDC holdings is available through the WWW
at URL http://www.ngdc.noaa.gov. It is suggested that you select Marine
Geological and Geophysical Data, browse around for information on these
data or run a search for available ancillary.
TerrainBase
-----------
NOAA/NGDC have recently released an elevation dataset caled TerrainBase.
TerrainBase is a compilation of national, regional, and global public
domain DEMs created by numerous creators/authors/agencies, plus digital
bathymetric grids, along with a new mosaic global DEM at 5' lat-lon
gridding which incorporates the most appropriate of these input grids.
The current release of TerrainBase might be considered an extensive
public Beta Test. By "public Beta Test" NGDC mean that the data can be
acquired on CD-ROM for nominal cost (currently $81 plus $10 for handling
orders shipped outside the USA). People that contribute back to NOAA/
NGDC new unrestricted DEMs to improve TerrainBase, or sufficiently
substantial new and valuable documentation or review comments, can become
official data contributors and be entitled to free updates of TerrainBase
or other data (by agreement).
TerrainBase gives full credit to authors/contributors of DEMs. It also
encourages agencies which have high resolution restricted DEMs to
reprocess to a lower resolution and contribute them as part of
TerrainBase.
The following tables lists the source data for TerrainBase, with
approximate coverage area, grid spacing, developer/contributor, and sizes
of datasets. However, not that TerrainBase is an integrated dataset
which will be available on CD-ROM; NOAA/NGDC have no plans to make the
individual source datasets available separately.
Coverage Grid Topography Developer/Contributor Total
Spacing /Bathymetry Samples
----------------- ------- ----------- --------------------- --------
TerrainBase Global 5' Both NOAA/NGDC 9.3M
Global Land 10' Topography FNOC and NCAR 2.3M
Global Oceans 5' Bathymetry U.S. Naval 8.7M
Oceanographic Office
North America 5' Both U.S. Defense 681,000
Mapping Agency (DMA)
Europe 5' Both U.S. DMA 616,000
Conterminous USA 30" Topography U.S. DMA 26.4M
Italy 30" Both Servizio Geologico
Nazionale
Africa 5' Topography Austral. Nat'l Univ. 886,000
Greenland 5'x10' Topography Kort-og 115,000
Matrikelstyrelsen
Australia 5' Topography Austral. Nat'l Univ. 207,000
Brazil Cerrados 2' Topography Centro Int. de 518,000
Region Agricultura Tropical
Chile/Peru/ 3' Both Cornell University 202,000
Chile Trench
Austria 1.5'x2.5' Topography Tech. Universitat 32,000
Graz
Japan, Korea 5' Both U.S. DMA 37,000
Netherlands 3'x5' Topography Tech. Universiteit 5,000
Delft
Alaskan Arctic 30" Bathymetry NOAA/CGS and NGDC 1.8 M
Ocean Coast
Bering Strait Coast 30" Bathymetry NOAA/CGS and NGDC 936,000
Alaska Pacific 30" Bathymetry NOAA/CGS and NGDC 9.5 M
Coast
US Atlantic Coast 30" Bathymetry NOAA/CGS and NGDC 5.1 M
Great Lakes 30" Bathymetry NOAA/CGS and NGDC 2.7 M
US Gulf of 30" Bathymetry NOAA/CGS and NGDC 2.0 M
Mexico Coast
US Pacific Coast 30" Bathymetry NOAA/CGS and NGDC 3.0 M
Hawaiian Islands 30" Bathymetry NOAA/CGS and NGDC 3.8 M
Coast
Puerto Rico Coast 30" Bathymetry NOAA/CGS and NGDC 360,000
Central Northwest 5' Both NOAA/CGS and NGDC 24,000
Territ., Canada
Madagascar 30" Topography USGS EROS Data Center 1.6 M
Dominican Rep., 30" Topography USGS EROS Data Center 635,000
Haiti & Puerto Rico
News on NGDC's developments with DEMs are also on the WWW. The URL for
Topographic Data is:
http://www.ngdc.noaa.gov/seg/globsys/topo.html
Global Land One-kilometre Base Elevation Database Project (GLOBE)
-----------------------------------------------------------------
NGDC is also participating in the Global Land One-Kilometre Base
Elevation database project (GLOBE). This international effort aims to
develop the best available DEM at 1-km (actually 30-arc-second) gridding,
fully quality controlled. The final product is scheduled for public
release in 1997, following internal drafting and alpha testing in 1996.
There will not now be an intermediate version, which was originally due
in 1995.
The general aims of GLOBE are:
1. Develop a 1-km global DEM, by including the best available
datasets and by encouraging specialists to participate in
production and review of the data. The GLOBE DEM will be made
available to the worldwide research community, perhaps on 8-mm
tape or CD-ROM. There may be two versions of GLOBE:
"BAD GLOBE" based on the Best Available Data (BAD), even if some
data are restricted from general distribution. This version
would be distributed in accordance with whatever agreement is
negotiated with contributors of various copyright datasets.
High-quality restricted data may improve the usability of the DEM
for people having access permission. However, data not available
to everyone are of limited value in promoting scientific
advances.
"GOOD GLOBE" based on Globally Only Open-access Data (GOOD). This
is the primary aim of GLOBE; to produce an unrestricted DEM that
is the most useful database for everyone.
NB. As of 1st June, 1995, NGDC state there is now likely to be
only one version of GLOBE; the need for a "BAD" GLOBE has been
saved by tremendous progress in obtaining access to appropriate
data.
2. Strengthen international collaboration in the development of
research quality digital global data sets. Adical and cultural
capabilities for international collaboration in the development
of such data.
3. Strengthen social awareness of the need for optimal quality high-
resolution global topographic information, including the
provision of a focus for the timely release of currently
restricted terrain data sets.
4. Supply a "pathfinder" data set to the Earth observation
community.
5. Develop a data structure (nested multi-resolution grid system)
useful for future enhancements such as might come from future
topographic satellite missions.
6. Give the Committee on Earth Observing Satellites Working Group on
Data (CEOS-WGD) a prototype in cooperatively improving vital
data.
Input data and methods used for GLOBE are:
. Elevation contours from the 1:1,000,000 Operational Navigation
Charts digitized into the Digital Chart of the World (DCW), will
be gridded at 1-km nominal latitude-longitude spacing.
. Currently available high-resolution DEMs at higher resolution
than GLOBE's will be sampled and inserted into GLOBE.
. DEMs derived from satellite imagery (stereo-optical and radar)
and altimetry will be added to GLOBE where applicable.
. As available data from the 3 sources above do not currently
provide global coverage, the GLOBE coverage will be filled out by
resampling lower-resolution DEMs (for which there is global
coverage).
Documentation on sources, methods of derivation, quality control
procedures and data characteristics will be provided as text, figures and
maps. Additional data, such as global hydrological networks, land-sea
masks and terrain slope information, are expected to be developed as
byproduct datasets.
NGDC state that GLOBE would be considerably strengthened by additional
participation, contribution of DEMs, etc. They actively solicit
additional contributions; appropriate citations will be given to all
contributed data. NGDC would greatly appreciate any leads which readers
of this catalogue may have - I am happy to pass this information on.
Some notable GLOBE contributors include:
. USGS EROS Data Center, Sioux Falls, USA
. University College London, UK
. DLR-German Remote Sensing Data Center, Oberpfaffenhofen, Germany
An important contribution from the U.S. Defense Mapping Agency (DMA),
derived from their previously unreleased DTED data, with coverage of
about 55+% of the land surface, will make this a valuable data set.
For further information contact David A. Hastings,
(Email: dah@ngdc.noaa.gov), Secretary of GLOBE at the address below or
telephone him on 303-497-6729.
Further details are also on the WWW as:
URL: http://www.ngdc.noaa.gov/seg/globsys/globe.html
NOAA/NGDC can be contacted at:
NOAA/NGDC Tel: 303-497-6338 (bathymetry)
325 Broadway 303-497-6084 (elevations)
Boulder, CO 80303, USA FAX: 303-497-6513
Email: info@ngdc.noaa.gov
NB. NOAA/NGDC will shortly announce a major new elevation data set.
(See also Note (5) for further information about NOAA/NGDC elevation
data)
(38) The Belgian National Mapping Agency is the Institut Geographique National
(IGN). They have two point height datasets covering all of Belgium
called the "DTM Level I" and the "DTM Level II". The coordinate system
for both datasets is geographicals. The DTM Level I has a resolution is
6" x 3" north of 50 degrees north and 3" x 3" south of 50 degrees north,
while the DTM Level II has a resolution is 2" x 1" north of 50 degrees
north and 1"x 1" south of 50 degrees north.
Both are provided in EBCDIC or ASCII in a Belgian National Standard
exchange format on 1600 b.p.i. magnetic tape. English documentation is
available. The cost for DTM Level I is quoted as 250000 BFr, with DTM
Level II at 500000 BFr, which seems very expensive in both cases.
Both datasets are said to be accurate to 30m (90% probability).
IGN are also part way through a programme to digitise all the line-work
from their topographic maps (presumably including contours) and creating
a feature-coded vector database. There are two different scales - 1:10K
and 1:20K. The programme is only approx. 10% complete at present, with a
planned completion date for the entire country of 2000. The data was
original captured using photogrammetery and is in a Lambert (conformal)
co-ordinate system. Costs and formats are unknown, although the data is
thought to be available on 1600 b.p.i. magnetic tape.
NB. 1996: 30m and 100m DEMs are now available which cover the
national area. Prices are as follows (in US dollars):
Per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
30m $6.0879 $185,760 One-time license fee
100m $0.7892 $ 13,089 " "
For further information contact:
Joel de Smet,
Director General IGN
Institut Geographique National Tel: (???)648-6480
Abbaye de la Cambre 13 FAX: ?
B-1050 Bruxelles (Brussels)
Belgium
(39) The Australian Department of Environment and Natural Resources has data
available for the Murray River flood-plain.
A medium resolution (5m) CD-ROM set (three CD-ROMs) contains: 250 digital
orthophotos, 100m mesh DEM, digital map index, display software (using
Terrascan Lite) with print options examples of merged orthophotos and
satellite imagery.
The DTM data has been mathematically modelled on a 100m mesh grid, from
photogrammetrically derived heights. The orthophoto maps are digital
imagery derived from aerial photography, corrected for camera and
landscape distortions. The imagery can be easily input to a PC, GIS or
simply viewed and processed for planning, development control and
management. The images are stored as generic 8-bit one band data, with
additional ASCII headers for ingestion into various image display
systems, e.g. Terrascan (.tsw), Arc/Info (.hdr) and ERMapper (.ers).
Additional high resolution (1.25m) CDs each contain between 5-7 images
and vary between 80-120Mb. Other data formats can be accomodated on
request. An examples directory contains a data set of Landsat TM data
which is merged with the digital orthophotos at a 10m pixel size.
Cost is AU$400 (including postage and handling) for the 3 CD set at 5m
resolution. The high resolution CDs cost AU$200 each.
Enquiries to and purchase from:
Tom Tadrowski Tel: (61)-68-226-4855
Image Data Services, FAX: (61)-68-226-4906
Resource Information Group,
Department of Environment and Natural Resources
282 Richmond Road, Netley,
South Australia, Australia, 5037
(40) A complete data set of the Philippines is available from NAMRIA, the
National Mapping Agency of the Philippines. This data was produced by
the Swedish Space Corporation using SPOT data in 1987. Contact:
Ricardo Bina, Tel: + 632 8105459
NAMRIA
(41) There is a complete data set of Sweden produced by Swedish Space
Corporation (SSC) a few years ago from LANDSAT DATA, plus a CD series of
Sweden by the National Land Survey. SSC have also carried out work for a
number of other countries in Africa. They will supply lists of completed
projects on request.
Contact SSC at + 468 6276450.
Email: postmaster@ssc.se
(42) The Hellenic Military Geographical Service has released two different
digital elevation data sets for Greece.
A DEM in ARC/INFO GRID format with cell size of 250m created from contour
lines from 1:250 000 maps with the addition of 26000 trig points. This
data covers the whole of Greece and costs 5,000,000 Drachmas (about
$2100). Contour lines digitized from topographic maps at the scale of
1:5000, with a contour interval of 20m. There is currently only limited
availability (33% of the country), with the planned programme completion
in 2000. The data are held as vectors and are available in DXF, Arc/Info
or ASCII formats on floppy disk or magnetic tape. Costs are 60,000
Drachmas per map sheet. The co-ordinate system used and the availability
of documentation are unknown.
NB. 1996: A more recent survey of National Mapping Organisations
quote the 250m DEM data as having 100% coverage of the
national area and costing $0.2 per km2 or $26,391 total
(single-use license).
For further details, contact:
Hellenic Military Geographical Service Tel: ?
Pedion Areos FAX: ?
GR-11362 Athinai
Greece
(43) ISTAR (Imagerie STereo Appliquee au Relief or, in english, Stereo Imagery
Applied to Relief) is a company specialising in DEM production by
automatic correlation techniques. It makes use of aerial photographs or
satellite imagery and markets two products ranges, namely AERIAL and
SPOT. The DEM-derived products include orthoimages, area features by
automatic extraction, linear features by semi-automatic extraction,
computed contours lines and image maps. DEM production may also be based
on digitized contour maps.
Since 1986, ISTAR has produced a total area of 1 million sq.km. from SPOT
images at different resolutions (typical pixel size: 40m for XS, 20m for
PA; typical Z standard deviation: 1/2 pixel).
ISTAR can meet very large capacity requirements (1 to 20 GB) of complex
databases including standard components (DEMs, Orthoimages, Land Cover
and Vectors Files, Scanned Maps) at different scales and formats. All
products and their references are contained in a price described in
technical documentation.
A price list is available from the company.
For further information contact:
Alain Beinish Tel: +33 93 95 72 30
ISTAR FAX: +33 93 95 83 29
Bat. 2, Espace Beethoven
Route des Lucioles
06560 VALBONNE
FRANCE
The major source of ISTAR data is SPOT satellite imagery. SPOT
encompasses steroscopic satellite imagery from which height information
can be extracted. 10m DEMs are available for any location in the world
via SPOT stereoimagery. SPOT DEMs cover 60% - 100% of the full satellite
image scene size of 60 x 60 km (~37 x 37 miles) with a minimum of 820 sq.
miles. Quarter-scene DTMs are also available. Data are supplied on
media including exabyte, 1/2" tape and CD-ROM.
For further details contact:
SPOT Image Corporation Inc. Tel: 1-703-620 2200
1897 Preston White Drive FAX: 1-703-648 1813
Reston
VA 22091-4368, USA.
In the USA, Francois Zamora is SPOT Image's Digital Elevation Model
Application specialist:
Tel: +1 703 715 3152
FAX: +1 703 648 1813
Email: zamora@spot.com
SPOT IMAGE is a French company, the contact details for the main office
in France are:
SPOT IMAGE Tel: 33-61 53 99 76
BP 4359 FAX: 33-61 28 18 59
F-31030 Toulouse Cedex Telex: 532 079 F
France.
(44) GETECH, a geophysical consultancy based at the University of Leeds in the
U.K., have produced a new version of ETOPO5 (see Note 5) called GLOBAL
DTM5. This has been enhanced using information derived from their
continental scale gravity project data. The most significant
enhancements are in the following areas:
o Africa
o South America
o Australasia
o Western & Eastern Europe and the Former Soviet Union
o China and parts of South-East Asia
o Antarctica
This dataset overcomes problems inherent in ETOPO5, such as systematic
data shifts and low resolution. Like ETOPO5, this is a 5 x 5 minute
dataset (approx. 10km x 10km at the equator), but it incorporates more
than 10,000,000 new data points for increased accuracy.
Data sets incorporated in GLOBAL DTM5 include: heights of gravity
stations ship track bathymetry (limited areas at present), National DTMs,
contour and spot heights from topographic maps, shorelines (for control),
satellite derived heights (very limited at present) and the old ETOPO5.
For North Central Asia (Former Soviet Union east of the Urals) an 8 km x
8 km grid from gravity station heights was used. For the USA the USGS 30
second grid has been desampled to 5' x 5' and for Antarctica the SCAR/BAS
topographic database was used (see Note 29).
Topographic maps have only been digitised where the coverage of gravity
stations and local DTMs is inadequate. ETOPO5 has been used where
nothing else is available. Where used (primarily Canada and Greenland)
ETOPO5 has been shifted by the appropriate 5' or 10' to the east to give
proper registration. Coverage maps for Africa, South America, Europe and
South East Asia/Australasia are included, indicating the contributions of
each data type for that area.
All areas are produced directly at 5' x 5' except for North Central Asia
and Europe, where intermediate local grids at 8 km and 4 km respectively
have been used. Thus east-west resolution at high latitude can be better
than at the equator limited only by the original data distribution except
in these two areas where it is limited by the intermediate grid spacing.
Vertical accuracy of the global DEM varies greatly depending on source
data, but the range is 5cm to 125m. The gravity station heights are very
accurate (5cm to 5m) but are only available in restricted areas. National
DTMs are generally accurate to a few metres. Topographic map derived
heights depend on the contour intervals on the source map (10m up to a
maximum of 250m) and the error will generally be half of this interval.
Costs are $1500 or 950 pounds ($500 or 350 pounds for academic users).
Site licences are available at $3000 ($1000 for academic users).
GETECH also sells a 2.5' (4km) grid for Europe (area between 25 deg W to
60 deg E, and 30 deg N to 85 deg N) at the same prices as the World
dataset above. Resolution of source data ranges between 250m and 10km.
A 3' grid for South America (area between 100 deg W to 25 deg W, and 60
deg S to 25 deg N) will be available by mid-1995. Costs have not yet
been determined.
The data are supplied in ASCII format on ISO 9660 CD-ROM with a graphical
display and extraction program for Windows PCs, together with with
fulltechnical report (also available on the CD-ROM in ASCII and
postscript formats) giving details of data sources and processing
sequences. The CD-ROM is also accessible from Mac and UNIX environments
and the 'C'source code for extraction programs is supplied.
For further details contact:
Geophysical Exploration Technology Phone: (+44) 113 2335240
(GETECH) FAX: (+44) 113 2429234
c/o Department of Earth Sciences Email:info@getech.leeds.ac.uk
University of Leeds Telex: 556473 UNILDS G
Leeds LS2 9JT
United Kingdom.
(45) Environmental Information Center of the Thailand Environment Institute
have almost completed a 1:250K database for Thailand. The database is
currently missing two sheets along Burmese border which are embargoed by
the Royal Thai Army.
The contours will soon be available as compressed (pkzip) DOS Arc/Info
export files for anonymous ftp from ftp://ftp.nectec.or.th in the "/pub/
info/thailand-gis+maps" directory. There are other mapping files
available in this directory, including country-wide maps and satellite
images.
The entire 1:250K database (including landuse, political boundaries,
roads, rivers, etc) will be being put onto CD-ROMs starting in May. The
CDs will be given away free to university, government offices etc. The
full database is unlikely to be available from the NECTEC ftp site due to
its large size.
For further information, contact:
Paul Hastings
Director
Environmental Information Center Email: pjh@nwg.nectec.or.th
Thailand Environment Institute tei!paul@senior.nectec.or.th
National Electronic & Computer
Technology Centre (NECTEC)
National Science & Technical
Development Agency,
Bangkok, Thailand.
(46) EDX Engineering have data coving the United States, Great Britain, Canada
and Mexico.
The Great Britain (ie. not including Northern Ireland) Terrain Data DTM
was digitised from early 20th century British Ordnance Survey maps at
1:63,360 scale with a contour interval of 50 feet. The DEM is at 50m
resolution and has a claimed RMS error of less than 2.5m, comparable with
equivalent digital data from the UK Ordnance Survey. It is distributed
in 20km * 20km tiles, which may be purchased individually. Purchase is
via a one-off payment, with no subsequent charges. The data comes on
CD-ROM or 3.5" floppy disk in EDX compressed format with a program to
convert to ASCII.
Charges: 1 tile $ 80
25 tiles $ 1,850
Full dataset $22,500
They also have 30m, 3'' and 30'' terrrain data coving the USA. Prices
vary depending on area covered, contact the company for more details or a
price list. 3'' and 30'' terrain data covering the entire US (except
Alaska) can be obtained on a single CD-ROM for $3,000.
Canadian terrain elevation data is available for:
All of Canada (excluding NW Terrorities) $12,000
" " (including NW Terrorities) $10,000
Individual Provinces $3,500-5,000
3'' terrain data covering Mexico is also available for:
1 square degree on diskette $ 100
All of Mexico database on CD-ROM $12,000
(255 files)
For further information, contact:
EDX Engineering Inc. Tel: (503) 345-0019
PO Box 1547 Fax: (503) 345-8145
Eugene, OR 97440
USA
(47) A topographic and climate database for Africa (Version 1) has been
developed by the Centre for Resource and Environmental Studies (CRES) in
the Australian National University. A CD containing the data is
available for a AU$20. These data were created using spatial analysis
and interpolation techniques developed by CRES.
The CD contains forty ASCII files containing gridded values of elevation
(DEM) and monthly mean climate for the African continent at a spatial
resolution of 0.05 degrees of longitude and latitude.
The topographic data were digitised from 1:1M scale air navigation
charts, augmented by miscellaneous maps at larger scales in areas where
data on the air navigation charts were sparse. The digitised data
consisted of all spot heights, selected significant points on elevation
contours and selected stream lines. The standard error of the DEM ranges
between about 20 and 150 metres, depending mainly on terrain roughness.
The data are stored as ARC/INFO ASCII integer GRID files (1380 columns by
1450 rows). The longitude limits of the DEM are 17.5 degrees West to 51.5
degrees East. The latitude limits of the DEM are from 35.0 degrees South
to 37.5 degrees North. The elevations are in units of tenths of metres.
Cells with no data (including all areas below the ocean) are denoted by -
9999.
The climate consists of monthly mean and annual mean values of rainfall,
daily minimum temperature and daily maximum temperature at a sufficient
spatial density to support reliable spatial interpolation. These data
were collected over all available years, which was typically 1920 -1980
and compiled from 18 national and international research institutes.
In addition, the CD contains corresponding colour images of each data
file in GIF picture format, and source and DOS executables of programs to
extract the data into IDRISI and GRASS.
Much more information is available from the Web via the URL:
http://cres.anu.edu.au/software/africa.html
or alternatively, contact:
Centre for Resource and Tel: 61-6-2494277
Environmental Studies FAX: 61-6-2490757
Australian National University Email: office@cres.anu.edu.au
Canberra ACT 0200
AUSTRALIA
(48) The Australian Digital Elevation Model (DEM) has been developed developed
by the Centre for Resource and Environmental Studies (CRES) in the
Australian National University, using their ANUDEM package. This
technique ensures that the DEM has a connected drainage structure by
automatically removing spurious pits or sinks. The DEM also incorporates
the stream line network digitized from the 1:2.5 M scale map of
Australia.
This DEM is available covering the whole of Australia at two resolutions
- 3' (1/20th degree) and 1.5' (1/40th degree). It is also available
covering the individual states at 1' or (1/60th degree).
All DEMs are in ASCII format as floating point numbers, with two decimal
places (10f8.2). The limits of the data are -44S, 112E Degrees and -10S,
154E Degrees, with 681 rows and 841 columns in the 3' DEM and 1361 rows
and 1681 columns in the 1.5' DEM. The value -99 is used to denote no
data or ocean.
The pricing (for a single site licence) is AU$2000 (3'), AU$5000 (1.5')
and AU$1500 per state for the 1' model.
The overall accuracy of the DEM is dependent on the local relief of the
actual landscape and the resolution of the DEM, as well as the accuracy
of the elevation and stream line data. In areas with low relief elevation
errors in the DEM approach elevation errors in the original data of about
10 m. In areas with complex terrain elevation errors may be well in
excess of 100m.
The table below gives the sources and estimated maximum errors of the
data used to construct the 1/40th degree DEM.
-------------------------------------------------------------
Data source Number Horizontal Vertical
of points error error
(km) (m)
-------------------------------------------------------------
Point Elevations
BMR ground survey 400 000 0.1 7
Trigonometric points 19 000 0.1 1
Bench marks 83 000 0.5 10
Coastline (1:250 000) 10 000 0.1 0
1:250 000 scale maps 65 000 0.1 10
Stream Lines
1:2 500 000 scale map 15 000 1.0 -
1:250 000 scale maps 7 000 0.1 -
Sink Points
1:250 000 scale maps 400 0.1 10
------------------------------------------------------------
Much more information is available from the Web via the URL:
http://cres.anu.edu.au/software/austdem.html
or alternatively, contact the author:
M.F. Hutchinson, Tel: 61-6-2494277
Centre for Resource and FAX: 61-6-2490757
Environmental Studies Email: office@cres.anu.edu.au
Australian National University
Canberra ACT 0200
AUSTRALIA
(49) The Swiss Federal Office of Topography (Bundesamt fur Landestopographie)
produce two basic elevation datasets, both of which are available for
the whole of Switzerland:
RIMINI 250m Grid
Cost: SFr 5890 or for one sheet (17.5 x 12Km) SFr 40
DHM25 25m Grid or Contours
Cost: SFr 280,000 (very expensive) or for one sheet (17.5 x 12Km)
SFr 5000
Other datasets include national coverage of topographic mapping (as
point, line and raster) at 1:200K scale (called LK200), 1:500K scale
(LK500) and 1:1M scale (LK1000). Costs are unknown. Programmes are
under way for capture of 1:25K (LK25) and 1:50K (LK50) scale mapping as
link-node vector and also as raster data (from photogrammetry and paper-
based maps) which should be complete by 2000. A similar project to
capture 1:100K data (LK100) should be complete by 1998.
For further information or to order, contact:
Bundesamt fur Landestopographie Tel: +41 31 963 23 21
Seftigenstrasse 264 FAX: +41 31 963 24 59
CH-3084 Wabern
Switzerland
(50) Small scale topographic data has been produced for the national area of
Greece. The data is not yet available and future availability is
unknown. No other details are available at present.
Contact:
Cyprus
Department of Lands and Surveys
Archbishop Makarios III Ave.
CY-Nicosia
(51) Raster topography, vector topography, link/node topography and digital
height models are available for Denmark. All data is based on the UTM-32
coordinate system.
The digital height model contains height points and is available in DXF
and DSFL format. Scale, resolution, medium and price are unknown.
Topography data is available from scanned maps. Raster topography data
is available at the 1:25 000, 1:50 000, 1:100 000 and 1:250 000 scales.
Vector topography data is available at the 1:200 000 scale. Prices are
unknown. Denmark 1:750 000 topography (elements unknown) is available
for the price of 8.000 Dkr.
Manually digitised link/node topography data is also available at the
1:500 000 and 1:1 Mio. scale
Contact:
Denmark
Kort- og Matrikelstyrelsen
Rentemestervej 8
DK-2400 K benhavn NV
(52) The production of Automated Charts, Europe (PACE) 1:500 000 dataset and
Digital Terrain Elevation Data (DTED) area available from:
Great Britain
Directorate of Military Survey
Feltham
The coordinate system of both datasets is geographicals.
The PACE dataset covers the geographical extent 46 N..61 N ; 18 W..18 E
and also covers hydrography, culture, names and air-information.
Elements are vectors, points and heights.
The DTED data covers the national area to a resolution of 1"x1".
Currently only data for the area south of Fort Williams is available,
future availability is unknown.
(53) The DTM-100 dataset contains spot height, covers the national area and
uses the EOTR coordinate system.
Contact:
Foldmeresi es Taverzekelesi Intezet - FoMI Tel: ++36-1-1113431
Sas utca 19. Fax: ++36-1-1126480
H-1051 Budapest
Hungary
The DTA-500 and DTA-200 topography datasets have partial geographic
extent and use EOTR / Gauss-Kruger coordinate systems. The DTA-50
datasets uses the EOTR coordinate system only. The availability of these
datasets is unknown. For more details contact:
Magyar Honvedseg Tel: ++36-1-?
Toth agoston Terkepeszeti Intezet Fax: ++36-1-?
Szilagyi E. Fasor 7-9.
H-1025 Budapest
Hungary
The Digital Terrain Model 200m and 1km datasets contain absolute and
relative height points. Both use EOTR / Gauss-Kruger coordinate systems.
Both datasets cover the nantional area and are available from:
Tavkozlesi Kutato Intezet Tel: ++36-1-1355560
Gabor aron utca 65.-67 Fax: ++36-1-1353900
H-1026 Budapest
Hungary
Prices for these datasets can be worked out through a bilateral
agreement.
(54) The Ireland office of the Ordnance Survey can be contacted at:
Ordnance Survey Office
Phoenix Park
IRL-Dublin 8
Ireland
The total availability of 1:50 000 topography data is planned for 1997.
Other datasets should be available now.
All data covers the whole national area except for the 1:2 500 data which
covers 90% of the national area.
All data uses the Irish Grid coordinate system.
See note (4) for information on the NTF transfer format.
(55) The Serie (r) dataset was produced from scans and covers the national
area, It's availability is ~80% for contours and ~15% for hydrology. The
Serie (n) data is produced by photogrammetry and covers 20% of the
national area. Only ~1% of the Serie 25 (n) data is available and future
availability is unknown.
The Serie 50 dataset covers 65% of the national area and 3% of the
dataset is available. Future availability is unknown.
The Serie 250 dataset covers 90% of the national area. 5% of it is
available and future availability is unknown.
All of the contour data from the "1:500 000 Data Base" is available. The
data uses the Lambert (conformal) coordinate system.
A 20m DEM covering half the national area is also available for $3 per
km2 or $488,051 total (one-time license fee).
Contact:
Institutio Geographico Militaire
Via Cesare Battisti 10
50122
Firenze (Florence)
Italy
(56) Only portions of these link/node topography datasets for the Netherlands
are currently available. Planned complete availability for the datasets
are as follows:
Dataset Year
----------------- ----
1:10 000/1:25 000 1998
1:50 000 1997
1:100 000 2000
1:500 000 2000
The 1:250 000 Data file is completely available and is cartographic data
containing vectors and qualities set to the UTM coordinate system.
The 3'x6' DEM has horizontal accuracy of 130m CE 90% and vertical
##### End of Part 4 of the Digital Elevation Catalogue (39879 bytes) #####
Subject: Digital Elev. Data Catalogue (5/5) [LONG!]
From: bruce@geovax.ed.ac.uk (Bruce Gittings)
Date: 1 Sep 96 00:03:55 GMT
##### Part 5 of the Digital Elevation Catalogue #####
accuracy of 30m LE 90%.
10m and 100m DEMs are available at the following prices (in US dollars):
per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
10m DEM $1.5912 $66,512 One-time license fee
100m DEM $0.4351 $18,205 " "
All datasets cover the entire national area.
Contact:
Topografishce Dienst
Bendienplein 5
NL-7815 SM Emmen
The Netherlands
(57) The 1:1250 and 1:2500 datasets contain link/node elements and cover 4%
and 86% of the national area respectively. The 1:2500 dataset should be
completely available by 1997. Both datasets are continuously updated.
The 1:10 000 and 1:100 000 topography datasets should also be completely
available by 1997. The 1:100 000 was produced through generalization.
The 1:10 000 is known to be continuously updated.
In addition to contours the 1:50 000 and 1:250 000 datasets also cover
hydrology, coastlines and boundaries. The 1:250 000 also covers
communications and settlements. The 1:50 000 contains vectors, seeds,
feature codes, names and INS-codesand the 1:250 000 contains vectors.
The datasets cover the national area and both should be completely
available. The 1:50 000 is continuously updated and the 1:250 000 is
updated irregularly.
All datasets use the Irish Grid coordinate system.
Costs for most of these data sets can be arranged through a bilateral
agreement.
Contact:
Ordnance Survey of Northern Ireland
Colby House
Stranmillis Court
NIRL-Belfast
BT9 5BJ
Northern Ireland
See also note (4) for information on the OS NTF transfer format.
(58) The 1:10 000 DTM uses the Gauss Projection coordinate system. 37% of the
dataset is available and future availability is unknown. The data set is
being irregularly updated.
Only 5% of the 1:50 000 data is available and again, future availability
is unknown. This data is also being irregularly updated.
The 1:500 000 dataset contains point and line elements and is completely
available. It also uses the Gauss Projection coordinate system and is
being irregularly updated.
They're are also 10m and 50m DEMs available at the following prices (in
US dollars):
per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
10m $23.3546 $1,277,863 One-time license fee
50m $ 0.9123 $ 83,218 " "
All datasets cover the national area, except for the 10m DEM which covers
60% of the national area.
Contact:
Instituto Geografico Cadastral
Pra a da Estrela
P-1200 Lisboa
Portugal
(59) The Instituto Geografico Nacional can be contacted at:
Instituto Geografico Nacional
General Ibanez de Ibero 3
E-28071 Madrid 3
They have a 200 x 200m DTM that covers the national area and the complete
dataset is available.
Their 1:25 000 topographic dataset covers 30% of the national area and
contains topographic information such as administrative areas, relief,
hydrography, vegetation, built-up areas, traffic and power lines.
The 1:200 000 topographic dataset covers the entire national area.
Both datasets are based on UTM coordinates and should be completely
available. The update procedure for the datasets is irregular.
For the contour/height datasets; about 7% of the 1:25 000 contour/heights
dataset is available and future availability is unknown while the 1:200
000 data is completely available. Both datasets cover the national area
and their is no update procedure.
Documentation is available in Spanish for the 1:25 000 and 1:200 000
topographic data (unknown for others).
(60) These datasets cover the national area and are based on the National
Grid of Sweden coordinate system. The datasets are being irregularly
updated. English documentation is available. Contact:
The 50m DEM was produced from 1:50 000 maps, aerial photos, and ortho
photo plates from 1:10 000 and 1:20 000 photos. Cost is #60,000. The
dataset consists of 130 million elevation points covering 400 000 km2.
The 500m DEM was produced in the 1960s for radar intervisibility studies
from 1:50 000 maps. Cost is unknown.
Contact:
Lantmateriet, Lantmateriverket
Lantmaterigatan 2
S-801 82 Gavle
Sweden
Reference:
Ottoson, L., 9th Int Con on Cartography, Maryland, July, 1978,
Establishment of a High Density Digital Terrain Elevation Data Base in
Sweden.
(61) They are three series of datasets available from the "Bundesamt fur
Landestopographie" for Switzerland. These are Link/node/raster
topography maps; Point/line/raster topography maps; and Height point
datasets.
Link/node, Raster Topography Data
---------------------------------
They 1:25 000 and 1:50 000 datasets will not be available until the year
2000. The 1:100 000 data is planned to be available in 1998. All
datasets will cover the national area.
(62) This dataset is not for sale.
The owner of this data set is:
Ministry of National Defence
General Command of Mapping
TR-06100 CEBECI - Ankara
Turkey
(63) In the German federal state of Baden-Wurttemberg the state surveying
office (Landesvermessungsamt) provides the following data covering the
state;
-topography data at 1:25 000 and 1:50 000
-50 x 50m spot heights
There are two 1:25 000 datasets. One contains topography based on the
ATKIS data model and stored in ATKIS (German standard land information
system). Availability is planned for 1996/97. The other is a raster
topography dataset only 20% of which is available. The 1:50 000 raster
topography is completely available.
The 50 x 50m spot height data has an accuracy of 2-5m and is based on the
Gauss-Kruger coordinate system. The data source is aerial photos (scale
unknown) and the height points refer to the top of trees in forested
areas. This data is stored in Siemens SICAD-GDB software.
Contact:
Landesvermessungsamt Baden-Wurttemberg
Buchsenstrasse 54
D-70174 Stuttgart
Germany
(64) For the German city-state of Hamburg 1:20 000 Topography (pre-version of
ATKIS) data should be completely available. The data source is a 1:20
000 city map. The data is stored in Siemens SICAD-GDB software.
Contact:
Bauberhorde - Vermessungsamt -
(Building Dept. Surveying Office)
Wexstrasse 7
D-20355 Hamburg
Germany
(65) The surveying office (Landesvermessungsamt) for the German state of
Hessen provides the following datasets that cover the state area.
They can be reached at:
Hessisches Landesvermessungsamt
Schaperstrasse 16
D-65195 Wiesbaden
Germany
They have a 1:25 000 topography data set stored in ORACLE and based on
the ATKIS (German standard land information system) data model (see note
which also covers location and hydrology. Complete availability of the
dataset is planned for 1996. The data source is a combination of
cadatral maps and city plans.
There are raster topography datasets at the 1:25 000 (33% available,
future availability unknown) 1:50 000 and 1:100 000 scales.
Both of the spot height datasets are complete and available.
(66) Two datasets covering the German state of Mecklenburg-Vorpommern are
available from the state surveying office (Landesvermessungsamt):
Landesvermessungsamt Mecklenburg-Vorpommern
Lubecker Strasse 289
D-19059 Schwerin
Germany
They have 1:25 000 topography based partly on the ATKIS (German standard
land information system) data model. The dataset also covers commune/
location names and boundaries. The datades city plans and availability
of the dataset is planned for 1997. This data is stored in Siemens
SICAD-GDB software.
A raster topography dataset of unknown scale/resolution should be
available, no other details are known.
(67) The German state of Northrhine Westphalia (Nordhem-Westfallen) has data
available from its state surveying office (Landesvermessungsamt):
Landesvermessungsamt Northrhine Westphalia
Muffendorfer Strasse 19-21
D-53177 Bonn
Germany
They have 1:25 000 Topography data based on the ATKIS (German standard
land information system) data model. The data also covers boundaries,
unused land and customs. The data was planned to be complete and
available by 1995.
The DGM50 dataset contains 50 x 50m spot heights produced from
photographic profile measurements and is fully available. The DGM10 data
contains 10 x 10m height points with an accuracy of +/- 0.3 to 0.5
meters.
The raster topography datasets were produced from scans, all of which are
available in TIFF and Scitex Type 30 formats.
All datasets use the Gauss-Kruger coordinate system (1:500 000 ?).
(68) Data covering the German state of Rhineland Palatinate (Rheinland Pfalz)
can be obtained from the state surveying office (Landesvermessungsamt):
Lanedesvermessungsamt Rheinland-Pfalz
Ferdinand-Sauerbruch-Strasse 15
D-56073 Koblenz
Germany
Like most German states they have 1:25 000 topography data based on the
ATKIS data model. This is stored in Siemens Sicad GDB software and
planned for full availability in 1995 (therefore should now be
available). The data also partly covers planned land use.
Their 20 x 20m spot height data (DHM5) is 68% available with plans for
90% availability by 1998. The data source is 1:8 000/1:12 500 aerial
photos and a 1:5 000 base map. The dataset will be updated together with
the base map or on special demand.
The 40 x 40m spot height data (DHM25) produced from 1:34 000 aerial
photos is 32% available with plans for it to be replaced successively by
the 20 x 20m data down to 10% of the land.
The 40m DEM has accuracy of + 2-3m (+9m in woodland) produced from 1:125
001 + 1:34 000 aerial photos.
All use the Gauss-Kruger coordinate systems.
Raster topography data should also be available, no details are known.
(69) Data covering the German state of Saarland can be obtained from its state
surveying office (Landesvermessungsamt):
Landesvermessungsamt des Saarlandes
Von der Heydt 22
D-66115 Saarbrucken
Germany
They have 1:25 000 topography data based on the ATKIS (German standard
land information system) data model and planned for availability in 1997/
98. The data also covers cable, mast. and is stored in Siemens SICAD-GDB
software.
They also have DGM5; 1:5 000 contour lines and structure data stored in
vectors and based on Gauss-Kruger (3rd system) coordinates. The data
source is 1:12 000 aerial photos and a 1:5 000 base map. The data will
be updated every 5 years for mining areas. Data is available in
SCOP(KARTE001, WINPUT), EDBS AND SICAD-SQD IN ASCII/EBCDIC exchange
formats and tar and BS2000 exchange structures on disk, magnetic tape and
streamertape.
The 1:5 000 contour data was used to calculate DHM5, the 20 x 20m spot
height data which is based on the same coordinates and in the exchange
structures/media as the 1:5 000. DHM5 is available in SCOP(KART001,
WINPUT) in ASCII/EBCDIC. German documentation is available for both
datasets.
(70) Data covering the German state of Saxony (Sachsen) can be obtained from
it's state surveying office (Landesvermessungsamt):
Landesvermessungsamt Sachsen
Olbrichtplatz 3
D-01099 Dresden
Germany
They have 1:25 000 Topography data based on the ATKIS data model planned
for availability in 1997. Data sources include city plans and the
dataset also covers commune names, location names and boundaries. The
data is stored in Siemens SICAD-GDB software.
(71) Data covering the German state of Slesvig-Holstein (Schleswig-Holstein)
can be obtained from its state surveying office (Landesvermessungsamt):
Landesvermessungsamt Schleswig-Holstein
Mercatorstrasse 1
D-24106 Kiel
Germany
They have 1:25 000 topography data based on the ATKIS data model
(partly) which also covers main dikes. Availability is planned for
1997.
10% of their 12.5 x 12.5 spot height data is available, future
availability is unknown and no other details are available.
There should also be a raster topography dataset available, again, no
other details are known.
(72) Data covering the German state of Thuringia (Thueringen) can be obtained
from:
Thuringer Landesverwaltungsamt
- Landesvermessungsamt -
Schmidtstedter Ufer 7
D-99084 Erfurt
Germany
They have 1:25 000 topography based on the ATKIS data model and stored in
ORACLE. Availability is planned for 1997.
They also have two 25 x 25m spot height datasets;
1) Accuracy: 5m Availability 20%
2) Accuracy: 9m Availability 30%
(73) The New South Wales Land Information Center (NSW LIC) has 25m grid data
covering 70% of NSW at 1:250 000 scale. The source of the data is
digitised topographic maps and ortho-photo profiles.
Contact: Greg Reid (063) 328465
They also have 5m grid data coving the Sydney area. The data set is
72,018,001 elevation points in size and costs AU$100 and AU$20 per km2.
The data source is 2m, 4m and 10m contour maps.
Contact: LIC (063) 326200
The address for the LIC is:
LIC
PO Box 143
Bathurst, NSW
Australia
2795
(74) The Department of Land Administration of Western Australia (DOLA)
has digital contour data from 5m, 10m and 20m maps covering 40% of
Western Australia.
Contact:
Alex Wyllie
DOLA Central Government Building
Cathedral Ave.
Perth 620
Australia
(75) Survey and Mapping Victoria have ungridded digital contour data at
1:25 000 covering 30% of Victoria.
Contact:
J.R. Parker Tel: (03) 651 5111
Fax: (08) 651 2353
Surveys and Mapping Victoria
2 Treasury Place
Melbourne
Victoria, 3002
Australia
(76) The Bureax of Mineral Resources (BMR) of Australia has 6'(11km) grid
data covering Australia.
The data has horizontal accuracy of 100m and vertical accuracy of 4-5m.
the size of the dataset is 400 000 elevation points. The origin is the
Australian Gravity Data Base.
The data sources are ground and barometic surveys. Contact informaiton
is unknown.
(77) Lands South Australia has digital contour data covering South Australia
that can be gridded on request. The horizontal accuracy of the data is
10-100m and the vertical accuracy 0.3-2m.
The data format is UNIX Design File in 3D, (others available) on floppy
disk, magnetic tape or exabyte.
The origin of the data is contour maps of the largest scale available
over any area.
Cost is worked out by a formula.
Contact:
Grant Cullen Tel: (???) 226-4852
Superintendent of Mapping
Lands SA
Mapping Branch
282 Richmond Rd.
Netley, South Autralia, 5037
Australia
(78) The TUG87 dataset covers the world at a horizontal grid of 5'x5', 30'x30'
and 1 degree x 1 degree. It was produced between December 1986 and March
1987.
Contact:
Professor H. Sunkel
Institute of Theoretical Geodesy
Technical University Graz
Technikerstrasse 4
A 8010 Graz
Austria
(79) The Ontario Ministry of Natural Resources has 60 and 100m DEMs covering
North and East parts of Ontario (401 highway) produced from 1:30 000 and
1:50 000 aerial photography.
Contact:
Barry Costello Tel: (416)314-1300
Ontario Ministry of Fax: (416)314-1336
Natural Resources
90 Sheppard Ave E.
North York, Ontario
M2N 3A1
Canada
(80) DEM data for Greenland produced from airborne radar altimetry is
available from:
Kort-og Matrikelstyrelsen Geodaevision
Rentemesterves 8
DK 2400 Kobenhaun NV
Denmark
Contact: Simon Ekholm
(82) The Tecnical University Delft in the Netherlands makes this data
available on floppy disk. It was produced in 1963 in a free air
anomalies study.
Contact:
Faculteit Geodesi
Technical University Delft
Postbus 5030 2600 GA Delft
Netherlands
(83) This data set has horizontal accuracy of 130m CE 90% and vertical
accuracy of 30m LE 90%.
Contact:
Jonny Anderson Tel: 47 67 18 100
Statens Kartverk Fax: 47 67 18 101
Kartuerksum
N-3500 Honefoss
Norway
(84) These DEMs are produced from 1:250 000 maps and cover 15-24 degrees East
- 28 - 35 South.
Contact:
Prof. C.L. Merry
Dept. Surveying
Menzies Building
24 Engineering Hall
University of Cape Town
Rondesbosch 7700
South Africa
Reference:
Merry, C.L. (1981), A preliminary DEM of South Africa, SA Survey Journal,
April, pp4.9.
(85) Coverage is digitised 20m contour data from 1:50 000 National Map Series.
Belize is covered by 44 of these sheets, of which approximately 20% have
been completed as of mid-1996.
Charges will depend on the type of institution making the request.
Contact:
Land Information Center Tel: (0)8 22249
Ministry of Natural Resources Fax: (0)8 22333
Belmopan Email: lincenbze@btl.net
Belize
(86) This DEM covers 28.873% of the Canada's area. Costs are (in US dollars)
$1.1325 per km2 or $4,431,775 total and based on a Royalty license.
Contact:
Geomatics Canada, Ottawa
(87) They're are 25m and 50m DEMs with 100% coverage of Israel available at
the following costs (in US Dollars):
Per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
25m DEM $1.04 $22,361 One-time license fee
50m DEM $0.52 $11,181 " "
Contact:
Survey of Israel, Tel-Aviv
(88) The Department of Suveying and Mapping in Kuala Lumpur has 15m and 30m
DEMs each of which covers 10% of Malaysia. Prices are as follows (in US
dollars):
per km2 Total Cost Copyright Restrictions
------- ---------- ----------------------
15m DEM $9.5831 $316,028 Annual + one time fee
30m DEM $2.3958 $ 79,026 " "
Other details are unknown.
(89) 1km DEM data is available for Vietnam from the National Geodetic and
Cartogrpahic Service, Hanoi.
Costs are $0.0152 per km2 or $5,000 total (one-time license fee).
No other details are known.
(90) The following companies may be able to supply data for Eastern Europe and
Korea.
Paradigm Sim Tel: (214) 960-2301
Texas (?)
USA
This company is a US Department of Defence sub-contractor which provides
visual terrain databases for military and commercial users.
Land Info Tel: (303) 369-6800
Aurora, Colorado
USA
Primarily a mapping company, they can extract DEMs from maps and output
to common formats. Costs is $1200 per map plus $100 for the DEM data. A
typical map is 1:250 000.
Autometric Tel: (314) 770-1421
5301 Shawnee Rd.
Alexandria
VA, USA
This company provides terrain databases with built-in DEM/DTED editing
with import/export.
(91) GRID Bangkok will become the regional repository for regional
thematic datasets.
Contact:
Surendra Shrestra Tel: + 662 5245365
Bangkok, Thailand Fax: 5165125
UNEP, Email: surendra@emailhost.ait.ac.th
Asian Institute of Technology
UNEP-GRID Dataset Catalogue
---------------------------
BAN 0004 Elevation map of Bangladesh from Global Elevation data
ETOPO5 Vector Bangladesh Unknown 5 minutes 130 kB
BUR 0004 Elevation map of Burma from Global Elevation dataset ETOPO5
Vector Burma Unknown 5 minutes 1.37 MB
CAM 0007 Elevation map of Cambodia from Global Elevation dataset
ETOPO5 Vector Cambodia Unknown 5 minutes 480 kB
GLB 0004 Global Elevation map "ETOPO5" Raster Global Unknown 5
Minutes 19 MB
INO 0004 Elevation map of Indonesia from Global Elevation dataset
ETOPO5 Vector Indonesia Unknown 5 Minutes 2.7 MB
LAO 0004 Elevation map of Laos from Global Elevation dataset ETOPO5
Vector Laos Unknown 5 Minutes 420 kB
MAL 0004 Elevation map of Malaysia from Global Elevation dataset
ETOPO5 Vector Malaysia Unknown 5 Minutes 536 kB
PHI 0003 Elevation map of Philippines from Global Elevation data
ETOPO5 Vector Philippines Unknown 5 Minutes 986 kB
VIE 0004 Elevation map of Vietnam from Global Elevation dataset
ETOPO5 Vector Vietnam Unknown 5 Minutes 607 kB
Asia : Boundaries, Soils, Vegetation
Bangladesh : Boundaries, Hydrology, Transportation, Drought
Burma : Boundaries, Hydrology, Transportation
Cambodia : Boundaries, Hydrology, Districts, Geology, Soils,
Precipitation, Climate, Transportation, Drainage,
Landuse, Vegetation
China : Disasters
Global : Ecosystems, Soils, Cultivation, Albedo, Climate,
Wetlands, GVI, Temperature, Precipitation,
Methane Emission, Soil Degradation, Boundaries,
Socio-economic
India : District Boundaries
Pakistan : District Boundaries
Indonesia : Boundaries, Hydrology, Transportation
Laos : Boundaries, Hydrology, Districts, Geology, Soils,
Precipitation, Climate, Transportation, Drainage,
Landuse
Malaysia : Boundaries, Hydrology, Transportation
Nepal : Boundaries, Hydrology, Geology, Transportation
Philippines: Boundaries, Hydrology, Transportation
S.E. Asia : AVHRR Sat. Images, IUCN Forest Map
Thailand : Boundaries, Hydrology, Forest Classification,
Transportation
Vietnam : Boundaries, Hydrology, Transportation
DEM SOFTWARE
------------
(A) Peter Guth has developed a super little PC-based program for DEM Mapping
and analysis called MICRODEM+ which is freely available. MICRODEM+ reads
USGS, DMA DTED, NOAA EEZ, TerraBase and ASCII xyz DEM formats, in addition
to satellite image data (TIFF, LandSat and SPOT) and map data in USGS DLG
or US Census Bureau TIGER formats. It forms an impressive geomorphometric
toolkit. Contour, slope, aspect and concavity/convexity maps can all be
produced (with several different slope and aspect algorithms), along with
cross-sections through to 3D perspective displays, with overlain thematic
data and fully animated fly through capabilities. Semi-variograms, fast
fourier transforms, statistical slope orientations, frequencies, basin
delineation are all possible. On top of all of that, the effects of
different map projections can be demonstrated and even animated
continental drift simulations are included. Demonstration data is
provided. There are also other programs including TS-PLOT and, for
oceanography, WAVES, TIDES, DUCK beach profiles and MARINE GEOLOGY.
These programs are all available via anonymous ftp from ftp.nadn.navy.mil
(Numeric IP address is 131.121.163.70), in the pub/oceano directory. Then
choose either the microdem and oceanlab directories.
A version is also available via Sol Katz's ftp site at URL:
ftp://ftp.blm.gov/pub/gis/microdem.*
(That is anonymous ftp to "ftp.blm.gov" and it is in the directory
"/pub/gis/", called "microdem.xxx", where xxx is the version of the
software).
Peter will be adding additional programs, data and documentation as time
goes on and providing updated versions of the programs. He is interested
in suggestions, comments and ideas on how to improve the programs.
Contact:
Peter L. Guth Email: pguth@charleston.nadn.navy.mil
Oceanography Department
U.S. Naval Academy
Annapolis, Maryland, USA
(B) Kevin Wooley has produced a shareware package called 'Landscape Explorer'
running on a Windows PC (with at least 4MB RAM). Version 3.50 is new in
October 1995. It can import data from digital files or scanned map images
(allowing you to automatically trace contours) to create 3D models of
landscape surfaces. These can be viewed from any position and drawn in
many different schemes such as Summer and Winter colours, GIS data mapping
and wire frame. Supports USGS DEM 7.5' (provided they conform to the
official format of blank-padded and CRLF-terminated 1024-byte records)
and UK OS NTF LandRanger file formats. Version 3.0 adds a much enhanced
user-interface, animation, 256 pseudo-realistic colour schemes and
"state-of-the-art" interpolation facilities. I'm told it doesn't handle
very large grids, and that the unregistered version allows only 16 colors,
and an even smaller grid.
In addition, a new program called Landscape Animator allows the creation of
views from inside the overlay and the generation of fly-throughs. A small
demonstration file available via Kevin's home page (see below) shows a
flight up the south col of everest using the Royal Geographical Society
'Hollings' map.
You can get the software via ftp to "garbo.uwasa.fi" as
"/windows/graphics/land350.zip" or "oak.oakland.edu" in the directory
"SimTel/win3/gis". The software is also available via Kevin's home
page at http://www.stir.ac.uk/~kjw1r/home.html
The shareware registration costs GBP40/US$65. A non-shareware 'pro'
version is also available that includes image and object overlay
facilities, AutoCAD DXF export and VistaPro interfaces.
Further information from:
Dr Kevin J. Woolley Phone: 01786 825406
WoolleySoft FAX: 01786 825406
Humblesknowe Cottage, Email: <100332.2104@compuserve.com>
Ramoyle, Dunblane,
Perthshire, SCOTLAND FK15 0BA
(C) Sol Katz (skatz@dsc.blm.gov) maintains an archive of GIS programs and some
data which accessible via ftp to "ftp.blm.gov" in the directory "/pub/gis".
The files which are relevant to terrain modelling include:
000-index Index File
contour.zip f77 src for contouring a grid
dem2dat.zip convert dem to xyz, qb src and exe
dem2xyz3.zip convert dem to xyz, c src and exe, works on 3 arc-sec, v3
demconv.f77 dem to row,col,z, f77 src, needs work
demout.f77 create a usgs dem from a grid. f77 src
nyc.dxf contours (20') of west half of New_York_e.dem, lat long
renka.f77 point triangulation to grid, f77 src only
There are also a number of different PC-based GIS packages and lat/long
<-> UTM inter-conversion programs.
(D) SAGE Capture is a program running under DOS windows (with command
buttons). It translates between a variety of raster and vector file
formats including export filters to VistaPro DEM and BIN formats.
With the vector to raster converter you can create raster point/line,
polygon and DEM surface maps from vector DXF data. These maps, once
created in raster format, can then be transferred to a variety of other
raster systems, including Arc/info grid ASCII, IDRISI, ERDAS .gis,
TerraScan, PC-MAP, SAGE, VistaPro, ASCII and CSV.
Another utility allows conversion of a landcover map to a VistaPro
terrain type overlay, which can then be used to have VistaPro render
trees, rivers, cliffs and buildings in the correct place on the DEM.
SAGE Capture is US$200 for academic institutions. For more information
look at URL http://www.dlsr.com.au/
Robert J. Raulings, Phone/FAX: + 61 3 9348 9489
Digital Land Systems Research (DLSR), Email: dlsr@werple.mira.net.au
PO Box 4191,
Parkville, Victoria 3052,
Australia
(E) Ruediger Koethe has a program called SARA which can compute morphometric
relief parameters such as slope, aspect, curvature and analytical
hillshading from a DEM. It is also able to automatically derive
geomorphographic features:
- (linear) flow lines, crest lines, breakes in slopes (edges) and
- (areas) summit areas, valley grounds, slope areas, closed depressions,
areas with divergent and convergent flow paths, subdividing of
slopes etc.
A WWW page (in German, although an english vesion should be available
shortly) is available at the URL:
http://uggg-pc-s1.uni-geog.gwdg.de/pg/sara/sara-d.htm
SARA runs under VMS, SunOS and OSF/1 (with other UNIX versions planned for
next year). There is a nominal charge of DM 300. The user interface, the
online documention and the user manuals (approx. 200 pages) are currently
only available in German.
For further information, contact:
Ruediger Koethe Tel: +49 551 / 39-8088
Geographisches Institut FAX: +49 551 / 39-8006
Universitaet Goettingen Email: koethe@uggg01.dnet.gwdg.de
Goldschmidtstr. 5
D-37077 Goettingen
Germany
(F) ANUDEM has been designed to produce accurate digital elevation models with
sensible drainage properties from comparatively small, but well chosen
input data. ANUDEM calcuates values on a regular grid of a discretized
smooth surface fitted to large numbers of irregularly spaced elevation
data points, contour line data and stream line data. The program imposes a
global drainage condition which automatically removes sinks where
possible.
ASCII, Arc/Info and IDRISI formats are read directly. Output DEMs may be
written as either as a lattice or x,y,z in both ASCII and
Arc/Info-compatible formats.
The program is written largely in FORTRAN 77 and is normally distributed
in binary for SUN UNIX and DOS Windows platforms. Where these platforms
are not supported, FORTRAN source code may be supplied to academic
institutions.
The cost of a single-site licence is AUS$1000 (US$750) or for academic
institutions AUS$600 (US$450).
Much more information is available from the Web via the URL
http://cres.anu.edu.au/software/anudem.html
or alternatively, contact the author:
M.F. Hutchinson, Tel: 61-6-2494277
Centre for Resource and FAX: 61-6-2490757
Environmental Studies Email: office@cres.anu.edu.au
Australian National University
Canberra ACT 0200
AUSTRALIA
(G) Richard Horne has developed a freeware program called 3DEM for Windows 95
and Windows NT. 3DEM version 3.0 provides landscape visualization and
flyby animations from USGS DEM files (including Arc/Info DEMs), Digital
Chart of the World (DCW) files, NASA Mars Viking Orbiter Digital Terrain
Model files, or any topographic data file which consists of a matrix of
elevation data arranged by row and column.
3DEM ray traced landscape images are produced with complete colour control
including artificial illumination as well as colour scaling by elevation.
3DEM will also produce red-blue 3D images for viewing with 3D glasses.
Animations can be created to give a realistic fly-through view of the
chosen landscape.
3DEM version 3.0 is available at the following locations:
ftp://ftp.winsite.com/pub/pc/win95/desktop/3dem30.zip
http://www.winsite.com/pc/win95/desktop/3dem30.zip
(H) TruFlite is a 3D Landscape Rendering software which can read the different
USGS DEM formats, gray-scale images (e.g. LANDSAT), and x,y,z delimited
data.
You can define either a point-to-point flight based on fixed X, Y, and Z
coordinates, or you can click freely on points on your landscape or
texture file to create a flight path. Parameters for focal length, pitch,
roll, dust, light, average height above ground, as well as Z-scale factor
can be set and then TruFlite renders any number of result files, either in
TGA or YUV Chroma format so that they can be encoded into MPEG, FLI or AVI
"movies". There are effectively no size limits.
Additional options allow for conversion of the elevation file into a
colour texture file based on a user defined palette of colours. SPOT,
Orthophoto and other images can be textured mapped onto the 3D surfaces.
Other features include surface interpolation, convolution, rectification
of images where a different projection has been used, merging and
resampling of images.
The program is available in both 16 and 32-bit versions, and requires at
least a 386 and 4MB of memory.
Priced at:
Single license: US $295 (US$195.00 educational)
Site license: US$1950.00 (unlimited use within a department)
Martin D. Adamiker FAX: +43-6246-73042
Kapellenweg 14 Email: martin.adamiker@siemens.at
A-5082 Groedig WWW URL: http://www.truflite.com/
AUSTRIA
Other software packages (in no particular order) which support a reasonable
level of terrain modelling functionality are listed below. An email address or
URL to obtain further information is given where available.
LaserScan Horizon (DEM and TVES components of LAMPS Mapping System)
(email: postmaster@lsl.co.uk)
Arc/Info TIN Module (email: support@redlands.esri.com)
GRASS
ERDAS Imagine
GeoVision Vision*DTM Module
Golden Software's SURFER For Windows
(email: info@golden.com URL: http://www.golden.com/golden)
Intergraph MicroStation/MGE
MapExplorer (Converts USGS data) (email: microinfo@micropath.com)
Map Wizard for Windows (email: microinfo@micropath.com)
MOSS
Panacea (Dr. M.J. McCulloch, University of Nottingham)
PCI FLY and Ortho (URL: http://www.pci.on.ca/)
VistaPro
There are many fewer packages which support true 3D functionality in a
GIS-related environment is:
Dynamic Graphics IVM (Interactive Volume Modeller)
Intergraph MGE Voxel Analyst
Stratamodel Stratigraphic Geo-Cellular Modeling System
MINESoft Techbase
Eric Miller keeps information regarding volume visualization packages
(including pointers to additional information, hardware platforms, etc.).
This can be found at URL http://www.oclc.org:5046/~emiller/misc/volvis.html.
It is usually difficult to get a connection to this server, and even if a
connection can be obtained, my experience is that, data transfer can be slow.
COPYRIGHT STATEMENT
-------------------
(c) Bruce M. Gittings, 1996.
Department of Geography, The University of Edinburgh, United Kingdom.
This document may be freely distributed by any means provided that it is
distributed in its entirety and that this copyright notice is retained. No
other use is permitted without prior reference to the copyright holder.
Specifically, this information may not be incorporated in any publication,
document, report or manual which is sold or otherwise traded (whether for profit
or not) or included as part of a package or product which is so sold or traded.
DISCLAIMER
----------
The University of Edinburgh and I accept no responsibility for any errors in
this list, nor do we endorse any of the data sets or software listed above in
any way.
I have no further information beyond that listed above, and am unable to help
in either obtaining further details or acquiring the data or software
themselves so please don't e-mail me requesting same!
##### End of Final Part of the Digital Elevation Catalogue (36584 bytes) #####
Subject: Re: Utter Futility of Arguing With Creationists
From: tomitire@vegas.infi.net (Viejo)
Date: Sun, 01 Sep 1996 01:11:50 GMT
On Sat, 31 Aug 1996 18:11:46 GMT, bashford@psnw.com (Douglas Bashford)
wrote:
>
>I notice this is posted to:
>alt.atheism,talk.atheism,talk.origins,sci.skeptic,sci.misc,
>alt.philosophy.objectivism,sci.philosophy.meta,talk.philosophy.humanism,
>talk.philosophy.misc,alt.catastrophism,alt.sci.physics.new-theories,
>sci.physics,sci.astro,sci.geo.geology
>
>You guys wouldn't exagerate a bit, would you?
>So?
>Re: Utter Futility of Arguing With Creationists
>
>This entire creationism v. science science debate is
>logically invalid. Why? This little thing known as
>evidence-as-proof. Apples and oranges. The whole
>discussusion. Not philosophically valid.
>
>Why? Your so called "debate" is not carried on in the
>halls of science, religion, nor philosophy. What do they
>know that you guys don't?
>
>Do you remember this:
>
>
>>zoner@indirect.com wrote:
>>: geo@3-cities.com writes:
>>: >From: geo@3-cities.com
>>: >Subject: Re: PROOF OF GREAT FLOOD: Early man predicts ice age (bible: Gen 7:1...) ???
>>: >Date: Wed, 10 Jul 1996 14:34:14 GMT
>
>>: >zoner@indirect.com wrote:
>>: >>Time, that not you or anyone actually knows happened! You didn't witness
>>: >>anything! If you did, send me the video.
>
>>: I have the Bible, written by God, who WAS there, what do YOU have? A bunch of
>>: nonsensical theories about how life formed, not proof at all.
>
>>You know, Zoner, you're getting more and more laughable. I know you're
>>getting my posts, because you're responding to posts going to exactly the
>
>
>>. You also ignore anything that
>>actually asks you to provide even semi-reasoned responses to questions
>
>>2) How many times do I have to repeat this: Simply saying, "The bible says
>>so." is not supporting evidence, especially for providing support for your
>>literal creationist view. As was shown in a previous post, (and I've
>>mentioned a couple times) the Pope, head person of the entire Roman Catholic
>
>>3) This is probably the 5th or 6th time I've seen you claim "no proof at
>>all" for evolution since I first posted for you a list of items of
>>observational evidence,
>
>etc, etc....sorry I didn't read the entire post...
>
>This matter of evidence.
>
>If Zoner happens to belong to the non-scientific, non-Biblical
>Creation Science Cult, then all your points are valid. However,
>if he claims only Christianity as evidence, your arguments are
>scientifically and logically invalid.
>
>As reference, I suggest you look up the three unprovable assumptions
>in the philosophy of science. This philosophy is the Western
>communication's default philosophy, the foundations that our thinking
>is built upon. Stuff related to cogito ergo cogito sum, the very
>basics; these three unprovable assumptions.
>
>I think you will find that evaluating one philosophy using a different
>philosophy (with an entire different set of evidence-as-proof) is
>logically, philosophically, and scientifically invalid.
>
>For example, science could never say: "God did not create the
>universe." Nor "That painting is not art." These questions are
>clearly and utterly outside of the philosophy of science.
>
>So:
>>Simply saying, "The bible says
>>so." is not supporting evidence, especially for providing support for your
>>literal creationist view."
>
>In fact within Zoner's philosophy it may very well be evidence. If
>so, you will utterly lose if you attempt to prove that your
>philosophy is more valid than his.
>
>In part, this is also because your three unprovable assumptions are
>equally as unprovable as his Bible-as-evidence assumptions.
>
>Normally we need not preface each statement with; "According to
>the philosophy of science..." However, in the context of comparing
>different philosophies this had better be made explicit.
>
>I don't think science can touch:
>>: I have the Bible, written by God, who WAS there,
>
>blah blah. Science can't touch that. Nor can creationism
>touch science. Apples and oranges. They are BOTH invalid
>investigating the other.
>
>Why? Each of those philosophies has a separate system of
>system of evidence-as-proof, and it it likely niether will
>EVER provide logical evidence that one superior to the other.
>
>--Doug
>
>
Very well put. But this is and will not be the case. There is
the venue of the legislature and court to consider.
We are getting too many divisions philosophically, religion,
nonreligion, overall culture, language, it will probably end
in an actual, physical separation. Probably by war. Such
differences are usally settled in this manner.
It is happening now throughout Bosnia, Chechnya, Israel, Iraq,
Muslims/Jews, Muslims/Russians, Muslims/Croats/Serbs.
And all of them against us as we march proudly into the 21st
Century at the head of the UN Vanguard!