Subject: Q: Software library for Hydrology
From: Michael Gruebsch
Date: Wed, 13 Nov 1996 15:36:30 +0100
Hello,
my posting is a request for help to the readers of this newsgroup:
I'm going to build a software library which is intended for being used
in hydrological and geo-physical modelling and simulation. It should
cover algorithms and data structures appropriated for phenomena like
evapotranspiration, interception, run-off etc.
Are you aware of any related work which tries to cover not only a single
model developed for a particular problem but provides a set of such
models, modules and/or algorithms?
I would appriciate it very much if you would send me some addresses to
contact or any bibliographic notes.
Michael
-- mmg@geogr.uni-jena.de ----------------------------------------- >8 --
Michael Gruebsch Tel.: +49-3641-632737
Fax: +49-3641-632727
Friedrich-Schiller-University
Institute for Geographic Sciences
Department of Geoinformatics, Hydrology and Modelling
Loebdergraben 32
07743 Jena - Germany
Subject: Graduate Student Support
From: "John C. Butler"
Date: Wed, 13 Nov 1996 04:54:43 -0500
FUNDING FOR GRADUATE STUDIES IN GEOSCIENCES
http://www.uh.edu/academics/nsm/geosc/geosciences.html
The University of Houston
Houston, Texas 77204
Graduate Fellowships - Graduate fellowships provided by corporate
sponsors are available to well qualified graduate students at both the
masters
and doctoral levels. Fellowships are awarded in a range of disciplinary
areas within geology or geophysics. The amount, eligibility conditions
and
benefits associated with each Fellowship vary. Applicants for
Fellowships must be full time graduate students who are either US
citizens or
permanent residents.
Graduate Internships - Graduate Internships are available to well
qualified graduate students at both the masters and doctoral levels.
Houston is home to the largest concentration of geoscientists in the
world and provides unique opportunities for interaction between
university
researchers and energy company scientists. Internships involve students
working with departmental faculty and a corporate sponsor on a
collaborative research project. Students carry out their research both
on campus and in the sponsor's laboratories to ensure access to a
comprehensive set of analytical and computational facilities. A range of
projects are currently available in both geology and geophysics.
Students use internships to develop a fuller understanding of the range
of
activities carried out by the corporate sponsor. The amount, eligibility
conditions and benefits associated with each internship vary.
Applicants for Internships must be full time graduate students who are
either US citizens or permanent residents.
Teaching Assistantships - the Department of Geosciences also provides
support to well qualified, full time graduate students in the form of
teaching assistantships. Students devote up to 20 hours per week in
instructional and related duties. Assistantships provide valuable
teaching
experience for those individuals who are considering an academic career.
They also provide all students with opportunities to acquire and improve
their communication skills. All full time graduate students are eligible
to
apply for Teaching Assistantships.
Please contact Dr. Stuart A. Hall, Chairman, Geosciences for more
information - sahgeo@uh.edu
Subject: Re: Speed of salt water evaporation
From: Melanie Roberti
Date: Wed, 13 Nov 1996 23:04:06 -0500
Barbara Margolis wrote:
>
> My son did an experiment where he put a small amount of water in each of
> two plastic cups. In one of the cups he dissolved a goodly amount of
> salt. I was wondering in which cup would you predict the rate of water
> evaporation to be greater. He found it to be in the cup that did not
> have salt water in it. Is this correct, or is there a problem with the
> experiment?
>
> Thank you in advance. Please email me with your answer.
>
> Barbara Margolis
> nwpianst@access.digex.netAdding Salt, or any dissolved substance (sugar, say) lowers the vapor
pressure of the solution, thereby increasing its boiling point and
lowering its freezing point. For the same reason, the salt water
solution would evaporate a slower rate, given the same air temperature
and humidity conditions. By the way, your son does'nt need to take
physical chemistry to find out why, I'm sure High school chemistry texts
still go over these basic principles.
Subject: LookSmart reviews sci.geo.hydrology
From: John Cussen
Date: Thu, 14 Nov 1996 15:02:16 +1000
Hi there!
LookSmart has just reviewed your newsgroup for inclusion in its
Internet directory at http://www.looksmart.com
Reviews are necessarily short (under 20 words or so), intended as a
quick summary for users who may have little or no previous newsgroup
experience. Here’s what has been written about this newsgroup:
sci.geo.hydrology
This newsgroup contains academic and technical discussion of hydrology
equipment, techniques and theory.
If you think our review includes incorrect information, or doesn’t
include some important detail(s), please email me at
jcussen@looksmart.com
** Your favorite web sites — we hope! **
Please take a look at our directory and in particular the following
categories:
Issues & Society / Environment / Sustainable Development / Water
and
Education & Reference / Science & Technology / Earth Sciences /
Hydrology
Have we missed some good sites? Please email your recommendations to us
at suggestsite@looksmart.com
Thanks for your help,
John Cussen
Editor / LookSmart International
Subject: Re: Rewetting MODFLOW cells
From: "Hank E. Julian"
Date: Thu, 14 Nov 1996 11:15:17 -0800
Joshua E Lieberman wrote:
>
> I'm trying to use BCF2 to rewet cells, but I can't get the model to converge whenever I turn on the rewetting option. Does anyone have any tips
or tricks
Josh, take a look at the output, are heads oscillating in certain areas? Are
your initial heads OK? What is your cell wetting factor? Rewetting is more
stable if controlled by the cell below, start with this - you can allow
wetting from sides and below after you get convergence, then use a little
trial and error. For a cell to wet, the head in the neighboring must be
greater than the elevation of the bottom of the current cell plus the wet/dry
threshold - check for problem cells in your model output and revise
the threshold accordingly. This is easy to do if your running with an
interface like Visual MODFLOW.
May the Force be with You,
-----------------------------------------------------------------------------
Hank E. Julian
TVA Engineering Lab, LAB 1A-N
P. O. Drawer E Phone (423) 632-1834
129 Pine Road Fax (423) 632-1840
Norris, TN 37828 e-mail: idv1o@tva.gov
-----------------------------------------------------------------------------
Subject: Re: Solvents/Chlorine Isotopes
From: efurlong@usgs.gov (Edward T. Furlong)
Date: 14 Nov 1996 15:13:53 GMT
Pat:
The reference I have is van Warmerdam, E.M., Frape, S.K., Drimmie, R.J.,
Flatt, H., and Cherry, J.A. (1995) Stable chlorine and carbon isotope
measurements of selected chlorinated organic solvents. Applied
Geochemistry, Vol. 10, pp 547-552.
Ed
Edward T. Furlong, Ph.D., Research Chemist,
Methods Research and Development Program,
National Water Quality Laboratory,
U.S. Geological Survey,
5293 Ward Road Arvada CO 80002
efurlong@usgs.gov
Opinions herein are mine and not necessarily those of the U.S. Geological
Survey.
In article <19961114034400.WAA11421@ladder01.news.aol.com>,
patrick546@aol.com wrote:
> Can anyone provide me with a good reference(s) on "fingerprinting" of
> solvent contamination sources using chlorine isotope analysis?
>
> Thanks,
>
> Pat (patrick546@aol.com)
--
Ed Furlong
Research Chemist
Methods Research And Development
National Water Quality Lab
U.S. Geological Survey
Arvada, CO
Subject: Re: Rewetting MODFLOW cells
From: rwinsto@lsuvm.sncc.lsu.edu (Richard B. Winston)
Date: Thu, 14 Nov 1996 15:44:16 GMT
Melanie Roberti wrote:
>Joshua E Lieberman wrote:
>>
>> I'm trying to use BCF2 to rewet cells, but I can't get the model to converge whenever I turn on the rewetting option. Does anyone have any
>tips or tricks for
>>
>> Thanks!Be more specific please. Why are you sure that the rewetting option is
>the reason the model does not converge? Just because the model
>converges on a solution when certain cells go dry and stay dry doesn't
>mean that everthing should work fine by using BCF2.
You can try to avoid convergence problems by several methods
If you know a cell should never become wet, make it an inactive cell
rather than a variable head cell.
You can adjust the value of the wetting threshold in WETDRY (higher is
more stable but may be less accurate)
You can decide which neighbors will be checked to decide if a cell
should be wetted.
You can use IHDWET to determine which equation is used to specify the
head in newly wetted cells
You can vary the wetting factor WETFCT
In steady state conditions you can adjust initial conditions to values
that are close to your best guess of the final conditions to improve
stability
You can chose a different solver. The SIP, PCG1, and PCG2 solvers will
work with the wetting capability. The SOR solver doesn't work well
with the wetting capability. Note that cells can not change between
wet and dry during the inner iterations of the PCG1 and PCG2 solvers.
The two most important variables which affect stability are the
wetting threshold and which neighboring cells are checked to determine
if a cell should be wetted. Both of these are controlled through
WETDRY.
It is often useful to look at the output file and identify cells that
convert repeatedly from wet to dry. Try raising the wetting threshold
for those cells.
Melanie Roberti is correct in stating that "Just because the model
converges on a solution when certain cells go dry and stay dry doesn't
mean that everthing should work fine by using BCF2." Sometimes cells
will go dry in a way that will completely block flow to a sink or from
a source. After that happens, the results are unlikely to be correct.
It's always a good idea to look at the flow pattern around cells that
have gone dry to see whether the results are reasonable.
I have additional material on MODFLOW available at
http://aapg.geol.lsu.edu/modhelp.htm .
Richard B. Winston
Dept. of Geology and Geophysics rwinsto@lsuvm.sncc.lsu.edu
Louisiana State University http://aapg.geol.lsu.edu/rbwinsto.htm
Baton Rouge, La 70803 ftp://aapg.geol.lsu.edu/pub/winston
U.S.A.
504-388-2337
Fax 504-388-2302
Subject: 9th Workshop on River Ice - Call for Papers
From: "G. Snyder"
Date: Thu, 14 Nov 1996 15:23:24 -0400
CALL FOR PAPERS
9th WORKSHOP ON RIVER ICE
September 24 - 26, 1997
Lord Beaverbrook Hotel
Fredericton, New Brunswick, Canada
The 9th Workshop on River Ice will be held in Fredericton, New
Brunswick, from September 24 to 26, 1997. The Workshop is sponsored by
the Canadian Committee on River Ice Processes and the Environment, which
is affiliated with the Hydrology Section of the Canadian Geophysical
Union. The Canadian Society for Civil Engineering is a co-sponsor of
the Workshop.
The 9th Workshop on River Ice will build upon the 1995 Workshop held in
Kamloops by focusing on the interrelationship between hydro-power
development and river ice regimes. The general theme for the 9th
Workshop is:
HYDRO-POWER & ICE-COVERED RIVERS
Design, Operational and Environmental Considerations
Papers are invited on a broad range of topics related to river ice
engineering and science, including environmental and ecological
conditions in ice-covered rivers.
Topics directly related to the general theme include:
- Design and construction considerations,
- Ice processes in regulated rivers,
- Operational problems and their mitigation and solution, and
- Ecology and biochemistry in reservoirs.
Other topics to be considered include, but are not limited to, the
following:
- Effects of climate change on river ice regimes,
- Breakup forecasting,
- Ice jams,
- Ice forces on structures,
- Sediment transport in ice-covered rivers, and
- Ice in estuaries.
Authors are requested to submit an abstract of about 500 words by
January 17, 1997 to:
Dr. Sayed Ismail, P.Eng, Chairperson
Technical Program Subcommittee for the
9th Workshop on River Ice
c/o New Brunswick Power Corporation
244 Connell Street
Woodstock, New Brunswick E0J 2B0
Telephone Number: (506) 325-7816
Fax Number: (506) 325-5013
Authors will be notified of the acceptance of their abstracts by
February 14, 1997. Authors of accepted abstracts should provide a
formal paper to be published in the Workshop Proceedings. Since the
Proceedings will be pre-published and provided to attendees at
registration, papers are required in camera-ready format by June 13,
1997.
Subject: AD: Job Open
From: gob@bayarea.net (GeoWeb )
Date: 14 Nov 1996 21:13:21 GMT
==============================================================
check http://www.ggrweb.com for more job news
==============================================================
REMOTE SENSING GEOLOGIST
Organization : Earth Information Systems Corporation
Contact : Dr. Alexandra Schultejann
Address : 7447 Bee Cave Road, Suite 206, Austin, Texas, 78746, USA
Fax : 512-329-5588
Email : alex_schultejann@eisyscorp.com
-----------------------------------------------------------------------
JOB DESCRIPTION:
Earth Information Systems Corporation (EISYS) has an immediate opening
for
an experienced geologist. MINIMUM REQUIREMENTS for this position are:
* Bachelor's degree in Geology
* 8 years experience in geologic interpretation of satellite & airborne
imagery
* 8 years experience in remote sensing and GIS applications
* Working knowledge of image processing and ERDAS Imagine
* Working knowledge of Arc Info and Arc View.
* Experience in project management
This position will be based at our Austin, Texas office. Some travel
may be required.
US Citizenship or proof of long-term eligibility to work in the United
States is required.
--
================================================================
GeoWeb Interactive - Online Resources for GIS/GPS/Remote Sensing
url: http://www.ggrweb.com
================================================================
Subject: Re: Addresses of companies supplying packers
From: FA_Spane@pnl.gov (F.A. Spane)
Date: 13 Nov 1996 21:50:53 GMT
In article <56ah5p$4bd@morgana.mat.uc.pt>, nelsonr@gemini.ci.uc.pt (Nelson Rodrigues) says:
>
>Hello everyone:
>I'm starting a project on fluid flow in fractured formations here in
>Portugal. I'll be conducting a few tests in a series of wells in the centre
>of the country. For that I'll require a set of packers but, so far, I've been
>unable to find a portuguese company for that purpose. I would appreciate if
>some of you could send me a few addresses of companies that suply
>packers, either in Europe (better) or in the USA.
>
>Thanks a lot in advance,
>
>Nelson Rodrigues
>
>nelsonr@gemini.ci.uc.pt
>Earth Sciences Department
>University of Coimbra
>Fax: +351-39-37711
>
Dear Nelson:
There are a number of U.S. companies that make packers and some have
European distributers. Here are some you might contact:
TAM International: They have a European office in Aberdeen, but you could
contact Bentley Sanford at their headquarters in Houston, Texas: Telephone:
(713) 462-7617; Fax (713) 462-1536 or (717) 627-0247.
Baker Oil Tools: I'm not sure whether they sell packers or just lease packers
and the associated downhole equipment. They have a website with all their
international office location addresses within the larger Backer Hughes website
at: www.bhi-net.com/bhi-net/
SOLEXPERTS, Inc.,: located in Zurich (Schwerzenbach) Switzerland: Contact
Arno Thut or Erich Wyss at : Telephone: 411 825 2929; Telefax: 411 825 0063
Baski: located in Denver, Colorado: Telephone: (303) 789-1200; Telefax: (303)
789-0900.
And if your interested in monitoring well/packer installations you might want to
contact Westbay Instruments: Located in Vancouver, BC, Canada: Contact
Dave Larssen; Telephone: (604) 984-4215; Telefax: (604) 984-3538. I'm not
sure if they have a European distributor or not.
Hope this of some help.
Grüss,
Frank
Subject: Re: HECDSS question
From: perryg@airmail.net (Gregory Perry)
Date: Fri, 15 Nov 1996 04:10:14 GMT
try
http://wrc-hec.usace.army.mil/
they wrote the library.
karl wrote:
>hi there!
>having absolutely nothing to do with hydrology, we ran into a major
>problem with a hecdss file:
>what we are trying to do is importing the data to a gis (arc/info) from
>ascii. all we need is a description of the file format.
>this is one of the file blocks:
>/COC/SR 1A/STA-ELEV///RESURVEY 1972/
>PD Ver: 3 Prog:Undefi LW:29MAY96 07:49:06 Tag:T157 Prec:0
> HEADER L.= 30, # DATA PAIRS= 56, # X CURVES= 1, # Y CURVES= 1,
>HORIZ= 1
>FEET FEET UNT UNT
> 5275. 5320. 5395. 5525. 5775. 5835. 5865. 5955. 6115.
> 6265. 6335. 6395. 6460. 6525. 6545. 6575. 6605. 6885.
> 6905. 6995. 7105. 7155. 7180. 7205. 7245. 7345. 7390.
> 7400. 7725. 7880. 7985. 8075. 8175. 8275. 8285. 8525.
> 8670. 8705. 8795. 8855. 9110. 9495. 10195. 10416. 10541.
> 10629. 10669. 10669. 10669. 10669. 10669. 10670. 10715. 10785.
> 11355. 11495.
> 5345. 5335. 5325. 5315. 5305. 5275. 5250. 5245. 5245.
> 5250. 5270. 5275. 5280. 5280. 5275. 5250. 5240. 5240.
> 5250. 5270. 5270. 5255. 5255. 5250. 5250. 5255. 5255.
> 5260. 5260. 5265. 5270. 5270. 5275. 5280. 5285. 5290.
> 5290. 5295. 5300. 5305. 5310. 5315. 5320. 5322. 5323.
> 5322. 5322. 5322. 5322. 5322. 5322. 5322. 5325. 5330.
> 5345. 5351.
>END DATA
>Q: what is that supposed to mean????
>please reply by e-mail to
>petra.oberhofer@stud.uni-regensburg.de
>or karl.hennermann@geographie.uni-regensburg.de
>Thanks!
=============================================================
perryg@airmail.net
Those who do not know their history are doomed to repeat it.
Subject: PhD : Tridi-flow and transport in coastal zone : numerical modeling (19/11/96 10h30 Grenoble FRANCE)
From: Stephane CHEVALIER
Date: Fri, 15 Nov 1996 15:41:33 +0100
=============================================================
FRANCAIS (for english version see below)
=============================================================
Soutenance de These :
Mardi 19 novembre 1996 a 10h30,
Salle de conférence de l'IRIGM
rue de la piscine
Universite de Grenoble (FRANCE)
--------------
Ecoulement et transport littoraux tridimensionnels :
application numerique
--------------
par Cristele BERTHET
pour le titre de Docteur en mecanique geophysique
These effectuee au LEGI
(Laboratoire d'Ecoulement Geophysique et Industriels)
Universite de Grenoble (FRANCE)
Resume :
L'utilisation d'un modele numerique tridimensionnel a permis d'etudier
d'une part un ecoulement caracteristique en zone cotiere a forte
bathymetrie, d'autre part, le transport de sediment.
L'influence de la bathymetrie et de la stratification sur l'evolution
d'un courant et de la surface libre est analysee. Cette etude se
concretise par une simulation realiste de la section du courant Nord
face a la baie de Monaco.
Le transport du sable et de la vase est considere sous l'action d'un
courant et de la houle. Puis, une etude sur le transport des particules
organique permet d'evaluer la production primaire dans la colonne d'eau.
=============================================================
ENGLISH
=============================================================
Tuesday 19 november 1996, 10h30,
conference room of IRIGM
University of Grenoble (FRANCE)
--------------
Tridi-flow and transport in coastal zone :
numerical modeling
--------------
by Cristele BERTHET
for the title of : Docteur en mecanique geophysique
PhD. carried out at the LEGI
(Laboratoire d'Ecoulement Geophysique et Industriels)
University of Grenoble (FRANCE)
Abstract :
We studied a characteristic flow in a deep coastal zone and the
transport of sediment using a three-dimensional numerical model.
The influence of bathymetry and stratification on flow and water level
was analysed. This study is applied in the simulation of a part of the
"North current" of the coast of Monaco.
The transfer of sand and clay was studied under the influence of flow
and waves. Then, a preliminary evaluation of the transfer and primary
production of the organic matter was presented.
Subject: Watershed Studies - List of Companies
From:
Date: 15 Nov 1996 20:10:37 GMT
I am interested in compiling a list of companies (US & International)
that have PROVEN track records in performing watershed studies, including modeling,
for the management of non point source pollution and water supply management.
I am compiling this list for several large industrial clients who are looking
for new service providers.
If you are interested in getting on the list, and can prove you have completed studies,
Please send me a brief EMAIl with you mailing info and phone number.
Regards,
Rob Paulsen
Subject: Watershed Studies - List of Companies
From:
Date: 15 Nov 1996 20:10:29 GMT
I am interested in compiling a list of companies (US & International)
that have PROVEN track records in performing watershed studies, including modeling,
for the management of non point source pollution and water supply management.
I am compiling this list for several large industrial clients who are looking
for new service providers.
If you are interested in getting on the list, and can prove you have completed studies,
Please send me a brief EMAIl with you mailing info and phone number.
Regards,
Rob Paulsen
Subject: Re: Long-term forecasting methods
From: ulall@kernel.uwrl.usu.edu (Upmanu Lall)
Date: Fri, 15 Nov 1996 08:29:31 -0700
Hi:
We've been developing very similar methods to yours using nonparametric
regression and nonlinear dynamics ideas
I'll be interested in taking a look at what you have done and discussing
possible collaboration along the lines you indicate below.Please contact
me by phone or email. You can get references to some of our group's work
on
http://publish.uwrl.usu.edu/faculty/lall.html
Upmanu Lall
In article <328A96EE.3447@icc.ru>, ZIRUS wrote:
> Suggestions for Cooperation in Long-Term Forecasting
> of Natural Processes
>
> Our methodology of long-term forecasting for natural
> processes has been developed by professor A.P.Reznikov and
> successfully applied for practical needs. Forecasting
> investigations were carried out in the Laboratory of
> Forecasting of Natural and Climatic Processes for the Siberian
> Institute of Energetics, Siberian Branch, Russian Academy of
> Sciences (SEI SB RAS, Irkutsk).
> On the basis of this methodology, a set of forecasting
> methods has been developed, in paticular, the method of
> analog-compatible relations in long-term forecasting of
> natural processes, and methods based on application of neural
> nets - descrete and continuous learning systems.
> As the parameters for applied forecasting of natural
> processes we have chosen: air temperature, sediments, duration
> of heating and vegetation periods, river run-off (output),
> input to water-storages, solar activity, increase of flora
> biomass, consumption of electric energy dependent on
> meteorological states of Nature.
> The presence of accumulated information as a set of
> statistic time series is the prerequisite of the forecasting.
> The period of the forecasting may be 1 to 25 years. The
> following forecasting evaluation indices were used: monthly
> average, season average, average for many years, etc.
> The methods were impletmented in the form of an integrated
> software system for IBM PC in the intelligent software
> environment ZIRUS (Russian abbreviation) which was developed
> in parallel with the methodology in the Laboratory of
> Artificial Software Systems (Irkutsk Computing Centre, SB
> RAS). Presently, the athors of ZIRUS actively develop
> forecasting methods.
> The principial publications on the problem are:
>
> - Reznikov A.P. Very long-term forecasts of natural
> processes for the National Economy.-Boulder. Colo., ERL, 1992.
> - Reznikov A.P. Determinate-probabilitic self-learning
> information system(DVOIS).// Izvestia Acad. Sci. USSR,
> Energetics and transport.,1969,N3. (in Russian)
> - Reznikov A.P. Processing of accumulated information in
> problematic situations.-Moscow, Nauka,1976.(in Russian)
> - Reznikov A.P. Prediction of natural processes by a
> self-learning system (physis, informational, methodological
> aspects). -Novosibirsk:Nauka, Siberian Branch, 1982. (in
> Russian)
> - Reznikov A.P. Analog-compatible relations in long-term
> forecasting of natural processes - methodological
> aspects.//Geography and Natural Resourses,1986,N3.(in Russian)
> - Abasov N.V. An approach to computer simulation and a
> tool system to support it (ZIRUS) // Proc. Intern. Sympos.
> "Software Technology of the 1990s" (Kiev, 1991).- Kiev: Univ.
> Press, 1991.
>
> If the contracting party is interested in considering the
> problem we could carry out the following works:
>
> 1) development of forecasting procedures for the
> specificity of definite regions (for example, river run-off,
> average air temperature, sediments and etc.) with the period
> of forecasting up to 25 years. We could develop additional
> procedures for the purpose of verification of forecasting
> processes and physical interpretation of the forecasts;
>
> 2) selling of the forecasting software system with the
> technology of exploitation and its further improvement;
>
> 3) delivery of series of lectures on forecasting problems
> (methodology of forecasting, specific forecasting approaches,
> peculiaries of forecasting tracks, technologies of
> implementation of forecasting methods in the artificial
> software environment).
>
> We are ready to discuss any other aspects of the
> cooperation.
>
>
> Laboratory of Forecasting of Natural and Climatic
> Processes of the SEI SB RAS, Professor A.P.Reznikov
>
> Laboratory of Artificial Software Systems, ICC SB
> RAS, Dr. N.V.Abasov
>
>
> Our e-mail: zirus@icc.ru
>
> 12.10.96
--
Upmanu Lall
Professor
Utah Water Research Laboratory & Civil Env. Eng.
Utah State University
Logan UT 84322-8200
(801)-797-3184
FAX: 801-797-3663
