Subject: Re: IMPACT OROGENY ON EARTH
From: ba137@lafn.org (Brian Hutchings)
Date: Thu, 12 Sep 1996 23:35:57 GMT
In a previous article, schumach@convex.com (Richard A. Schumacher) says:
it's very good to have a plasma-based stab at a model
for origins, since it is, after all, 99.44% of known matter
in Universe; it did seem, doc.Brown, that you were saying that
the supposed impact actually plama-ized most of Earth;
is this correct?... there's nothing wrong with thinking BIG, so long
as you can scale it down to Earthsize!... now, if
you could tie it into Alfven's cosmogeny,
we'd have Plasmoid Soup-to-nuts (sorry .-)
in any case, I was very glad that you showed us that fact that
Mauna Loa is in the center of the ring of fire, as obvious as
it should have been, as this is of some importance (esp.if
it is, indeed, iridium-enriched, as you stated) to *any* theory
that is "supercontinental". my sugestion about Olympus Mons
as a parallel, though, must be helped by noting that,
since Mars is so-much smaller, it's "life" was apparently faster,
by billions of years, than Earth's, and
Olympus Mons might reperesent a near-final stage
of tectonic activity.
personally, in line with Moore, I feel that
the impact enthusiasts have gone too-wildly in the other direction,
and that it may well be that the solar system does act,
after the initial periods of acretion, to keep really threatening impacts
at bay; after all, does not most of the visible stuff
of this galaxy rotate in a rather confined manner,]
mostly in one direction around one center (and lesser centers,
like stars) ??... in other words,
the lunar cratering may be seen to be a good example
of the freezing-up of a tectonic system,
with some final blockages resulting in explosive cratering,
the kind that could release iridium form the interior.
in this light, the mention by another of slab-bottom friction
may be relavent to another model; how, for instance,
is the conundrum about the mantle being both solid (by telemetry) and
liquid (by neccesity of mantle currents) currently handled?...
and I did remember, today, the name of that shoptool;
it's a "toggle press" -- don't get your fingers caught in one!
also, the newpaper coverage that I read of the Shoemaker-Levy impact,
before it happenned, was quite open to any possibility, and
it was certainly derived from expert opinion; in other words,
some of your science-history is a bit pointless, doctor.
>So your ideas are that the impact which formed the Moon also
>formed the Pacifc Basin, started and powers plate tectonics,
>and created life? Oh, boy. When do you believe this miracle
>impact occured?
--
There is no dimension without time. --RBF (Synergetics, 527.01)
(Brian Hutchings -- ba137@lafn.org)
Subject: Re: IMPACT OROGENY ON EARTH
From: "Robert D. Brown"
Date: 13 Sep 1996 01:31:20 GMT
William E. Todd wrote in article
<3238219E.69FA@usit.net>...
> p> This article was posted to Usenet via the Posting Service at Deja
> News:
> > http://www.dejanews.com/ [Search, Post, and Read Usenet News!]
>
>
> I'm just an amateur, but I don't think that you are covering all of the
> bases.
Dear Bill: I'm not a professional geologist, either. I am a medical
doctor who practices internal medicine and neurology. I like this type of
work because it involves problem solving, the pay is good, and our society
is structured in a way such that I have a whole bunch of college-educated
science majors who do free literature searches for me on any subject I want
to study if I occasionally listen to their stories about new medicines that
their employers are marketing.
These are some of the benefits of being a medical doctor, but they aren't
the reasons I chose to be a physician. I was a philosophy major (symbolic
logic) as an undergraduate who worked full time as a Fortran programmer in
the department of physics at Columbia University. My boss in those days
was/is one of the world's most celebrated mathematicians. His group
designed and built positron detector systems for military satellites that
were/are used to detect nuclear warheads buried under the ground in Russian
silos. I was just a teenager at the time and really liked having access to
several of the world's largest computer systems at a time when few others
did. The laboratory was Columbia U's last "defense-industry" lab and was
originally established as Columbia's contribution to the design and
fabrication of the first atomic weapons. Because it was a "secret" lab, it
was hidden on the university's medical college campus, physically
positioned between the outpatient departments of obstetrics and pediatrics.
People who made decisions in the 1940's about these things thought the
babies and kiddies surrounding the lab would prevent Hitler from blowing up
the lab.
It was this situation that first exposed me to medicine. Its sort of
funny, Bill, but the mathematics of particle physics aren't all that
different from the mathematics used to characterize biostatistical
problems. In those days PC's hadn't been invented, so I did all kinds of
statistical work for medical doctors at Columbia who needed help with their
research publications. After I graduated from college, this background
allowed me to step right into a position as a biostatistician for the
American Cancer Society. My work there involved the characterization of
lung cancers in uranium miners and the first determination of the
usefulness of mammography in breast cancer screening. My analytical role
in this work made me appreciate that I really needed to understand the
workings of the human body better than I did, so when Cornell offered me a
full scholarship to go to medical school, I took it.
While in medical school I became interested in the ways that cells generate
and utilize energy at the sub-molecular level. My study of this subject
made me something of an admiring "groupie" of Peter Mitchell, who
subsequently won a Nobel Prize (1978) for his development of the
"chemiosmotic theory of membrane energetics". Peter was recognized as a
"bad boy" of biophysics because he liked to poke fun at his contemporaries
who couldn't comprehend the value of his theoretical models. There were a
lot of other reasons why Mitchell didn't get along with his contemporaries,
but this isn't the place to discuss his personal life history (which I do
in my forthcoming book "Babel Rebuilt: The Biological Derivation of
Planck's Constant").
I don't know what you do, Bill, besides contribute your readings to this
Internet news group, but from what I've already seen, you appear to have a
genuine interest in our solar system. I do, too, and that's why you'll
find some of my comments here. It doesn't bother me that you are an
"amateur", like me, because I know that the history of scientific progress
is characterized by the appearance of many of the very best ideas in any
specific subdiscipline from individuals who work outside of those same
subdisciplines. This is because people who work inside any specific
discipline have to deal with all types of pressures, influences, and
realities (in their professional lives) in a way that preserves their
membership within their chosen group. This is not a criticism, just an
observation about which others have written volumes. Richard Feynman, who
you'll learn more about if you ever take up readings in quantum
electrodynamics, summarized this whole subject when he said: "The best
science is always subversive". He made this comment in an effort to
explain to his students why "revolutionary" science theories are so
frequently met by the contempt of the disciplinarians, e.g. the
"professionals", of those fields of investigation undergoing change.
So, Bill, now that this has been said, let's get on to some of your other
comments.
For instance, the volcanic peaks of Hawaii are formed by the
> Pacific plate moving across a hot spot on the mantle boundary that has a
> large magma reservoir (in fact, the newest Hawaiian Island is forming
> now as an underwater and VERY active volcano that should breech the
> surface of the ocean in a relatively short {geologically speaking}
> time).
All of what you say here is true, and I know first hand because I spent
most of the past decade living in Kailua-Kona, Hawaii immediately downwind
from the volcanic vent that dumps 100,000 tons of sulfur emissions into the
Hawaiian sunset every 24 hours. I had moved to Hawaii from New York City
to help in the effort to block geothermal development on the Big Island.
There were some mercenary politicians and geologists who wanted to develop
a 500,000 kilowatt geothermal power plant over the magma chamber, running
undersea cables from Hawaii to Oahu and Maui. I'd been doing a lot of
reading about Hawaii because the volcano plays an important role in this
model I have for adjusting the use and interpretation of radiometric rock
dates. Anyway, these geologists were so focused on energy production that
they didn't realize that they had figured out just about the only way human
activity might combine with magnitude 7 earthquakes to deshield the magma
chamber, converting the island into a Krakatoa-style disaster for our
planet.
So, Bill, I moved to Hawaii, set up an office in town, and got a part time
unpaid job writing regular sci-med articles for the most widely read
newspaper in the area. Shortly thereafter, the editor asked me to write an
article about the health consequences of breathing volcanic emissions of a
daily basis for the newspaper's Earth Day edition, so I did. Wow, did that
ever piss off the Hawaii Department of Health officials who couldn't ever
see any of the vog (volcanic fog) from Honolulu. Worse than that, I had
slipped in a few comments about the way the new geothermal venture would
make a Pompeii-class problem once the cold waters of a 500,000 kilowatt
geothermal well converted massive quantities of plastically-solid
peri-chamber rocks into millions of hard, highly fractured rocks. You see,
Bill, that's how geothermal power plants achieve their design purpose. In
my article I noted that large earthquakes routinely roll through that part
of the globe and, as every geologist knows, earthquake shock energy passes
right through solid rocks but gets released in fractured rocks. Since the
geothermal well was located on a steep slope, I felt that it wouldn't take
too many millions of kilowatts before a package that would impress the
Unabomber had been designed and charged. I'm not really sure how it
happened, Bill, because so many people got involved in the thing after that
that I really didn't have to say much more. Somehow environmental groups
went into federal court with this new idea and the judge, an amateur
geologist like yourself, decided that it probably wasn't a good idea to do
anything that might blow off the lid of the world's largest volcano.
Over-night they pulled the plug on that one. Whew, Bill, that was a close
one!
After that, some friends of mine invited me to help work on a futuristic
report designed to help guide the development of very long-range planning
for the federal government. No, Bill, it wasn't work on Hillary's Health
Plan. Hawaii had Michael Dukakis working in Hilo on that one. I was asked
to write out the most compelling reasons that humankind should develop
systems that might someday be used to deflect Earth-heading asteroids and
comets. You might not recognize the connections here, Bill, so let me
expand on the details for a moment. You recall that I was a philosophy
major. Plato was my very favorite philosopher, and I had read his Timaeus
when I was in junior high school. The Timaeus was the "handbook" of
"cosmology" and "medicine" in Plato's Academy at the beginning of our
cultural history. Isn't it strange how Plato linked those two subjects
together, Bill. Did you know, Bill, that Plato was that fellow who thought
the most perfect thing that humans can appreciate is the "circle". Think
maybe Plato was an idiot, Bill?
I don't think Plato was an idiot, Bill, but do you know what else he
thought--and taught--in the Timaeus? Plato said that his own civilization
prided itself for its accomplishments, and had good reasons to do so, but
that its citizens really didn't comprehend their own heritage, their
origins. Because they didn't comprehend their past or that they actually
had one, most Greeks thought humans were something "new" on this planet
called Earth. Lacking an indisputable record of the true past, but needing
a sentient sense of self, his fellow citizens maintained a mythical
tradition that provided some sense of their past. I hope you read the book
itself, Bill, because it really is quite remarkable how Plato spells out an
understanding of the past that is only becoming obvious to many of us
living today. You can find a copy of the Timaeus right here on the
Internet: just do a search and you'll discover where to find the Loeb
translation of the text. It is sort of long and complicated, the
relationship between medicine and cosmology that Plato outlines, so I'll
just continue to summarize some of the more important principles of human
existence on Earth that Plato describes in his handbook for Academicians.
Still with me, Bill? Don't worry, I'm sure we can cover many details in
later posts.
Plato liked to make his points with parable-like stories. He was playful
of knowledge this way, but he also knew when to get right down to the point
of a matter. In the Timaeus Plato describes some of the mythical
explanations for human existence popular in his day and then he goes on to
explain that the true fact of the matter is that the intelligent creature
idealized in the form of humans beings has an ancestry that goes back to
times as old as the planet itself. Plato recognized this understanding as
the single most important insight we can have about our extended selves,
considered this notion the most important teaching of his philosophy, and
embedded the realization at the core of the handbook, just to see if any
new students skipped central chapters. Plato, you see, linked his
discussion of the nature of the hard ground beneath our feet (in the first
half of the book) to his discussion of medicine (a characterization of the
human form) in the second half of the book, via the summary conclusion that
the intelligent human specie is nearly as old as the planet itself, and was
formed from it.
No, Bill, Plato doesn't get lost in a discussion of evolution in the
Timaeus. He may have been too smart to do that, but we can't really say
that he took change for granted, either, because so much of his philosophy
is devoted to the analysis of transitional forms and the way we have to use
these mirage-like impressions of reality to comprehend ourselves and the
true nature of existence. An ancient age for our lineage, fleeting and
highly transitional glimpses of lasting truth, and perfect circles were
really important things to Plato, who I read in my youth, before I became
involved in ways to protect our planet from asteroids and comets.
Anyway, Bill, Plato said that the reason his civilization had such a fuzzy
understanding of itself was really fairly easy to understand. The true
fact of the matter, he said, was that big rocks fell from the skies on an
episodic basis, wiping from the surface of the planet any record of what
humans past had endured. He was very specific about this, too, noting that
these events occurred in two different forms. When cosmic rocks
episodically fell into the seas, civilizations were washed away by the
deluge of a tsunami wave hundreds and thousands of meters in height
sweeping across the surface of the land. Only uneducated shephards living
high up in the mountains would survive these types of disasters. In
contrast, when one of these cosmic rocks hit on land, great atmospheric
fires destroyed all but those few people who resided near and along
mountain basal streams and rivers. In either event, Plato said, these
cosmic disasters were the true cause of most change on Earth and the
contents of the human mind. These events changed the structure of the
Earth he said, and told the story of Atlantis (the only ancient record of
the place) to illustrate his point. These catastrophe's changed the
essence of human contemplative existence as well, he thought, because the
human survivors of large planetary impacts were (by virtue of their
existence as mountain shephards and backwater stream-dwellers) untrained
and uneducated people who knew little about science or history. All of
those understandings that pass between the generations become lost when
rocks fall from the heavens, he said, and only the dull-witted are left to
carry on our specie. Plato knew that it requires centuries of genetic
learning to make any scientific knowledge "hoary with age", sufficiently
wise to comprehend the critical fact that the human being is as old as
mother Earth.
I remembered Plato's Timaeus, Bill, when I was asked to help lay out a
plan, a reason, and a way to protect ourselves from cosmic hazards falling
on our heads, changing our planet's structure and our knowledge of
ourselves and our past. At first, Bill, I thought it was a ridiculous
idea, the notion that humans might determine their own fate and truly shape
their destiny in and over time. Now I'm not much of a religious scholar,
Bill, but one thing I did get from my up-bringing was a sense that man was
placed on Earth to function as its protector. I know that some people
think this is a silly and simple idea, Bill, but I think it a noble sense
of purpose in life no matter what else may also be true. Egotistic,
perhaps, but not when we realize that there are a thousand different ways
that each of us can lead lives that help protect Earth and its inhabitants.
As a lifestyle. As an assumption of existence here now.
So I got over my skeptic's reticence, quit my life in Hawaii, and moved
back to the mainland to write my invited thesis about Hawaii, mountains
falling from the sky, and perfect circles written in the rocks.
So, Bill, its OK if you're just an amateur in this business. We all are.
Now what were you saying about Hawaii?
Back to Bill's question:
This volcano is forming from the bottom up and I don't see how a giant
> impactor could have caused this. Granted, an impactor many kilometers
> across could fracture the crust and cause an upwelling uf magma and
> molten debris (as on the moon), but I do not think that Hawaii is this
> case and know of none active today.
Aren't you sort of contradicting yourself here, Bill. You have made an
observation in your first sentence, explained its cause in the second.
Then, you say you don't believe your eyes. Hawaii is very active today.
Believe me Bill, I've lived there.
Back to Bill:
>
> Also, I believe that the experts have pretty well established that at
> least a major reason for the extinct of the dinosaurs was because of a
> giant impact.
That's right, Bill, I've heard that rumor, too. Why do they think that
sort of thing?
Bill goes on:
I believe that they have found an iridium isotope from the
> bollide that was ejected into the atmosphere and settled in a peculiar
> clay layer over virtually the whole world.
That's what I heard, too. Do you think its true? Just yesterday, Bill,
one of those experts told me that wasn't really true, that the calculations
of iridium are way off the mark. There is that clay layer at the KT
boundary, though. Does it really matter how much iridium is in it? Not
really, I think.
Bill says:
I also believe that they have
> found the impact crater, through means of satellite photos,
> magnetometry, radar imagery, core samples, and seismic wave analysis.
> This crater is almost impossible to see by any one of the above methods,
> because as you said, erosion by various means has almost erased it. I
> believe the crater measures hundreds of miles in diameter and is partly
> on (under) the Yucatan Peninsula and partly underwater in the Gulf. I
> also believe that they have pretty much confirmed the existence of about
> a half dozen other such craters around the world by the same means, some
> of them older, and some younger. The only location that I can remember
> right off hand is one in the US midwest, maybe verging into Canada. I
> also think that this huge crater has accompanying smaller craters, as if
> the impactor broke up before impact like Shoemaker-Levy did at Jupiter.
Wow, Bill! That must have been some fireworks show. I've wondered
sometimes about that Hawaii Emperor Chain stretching across the Pacific in
a similar way. A tidally-fragmented impactor generates a slew of
individual fragments that splay out in a mass-dependent manner, heaviest
fragment at the end of a series of impacts. Do you think that maybe each
one of those volcanic islands forming the Hawaiian Emperor Chain might have
been punched in the seafloor by an individual fragment, each one created a
volcanic degassing site in the Pacific Ocean? I don't, but it is a
thought, isn't it?
Bill says:
>
> I have also read something about the craters on the moon, Mars, and
> other bodies seem to fit a picture of several imact-rich eras in the
> past history of the solar system, and that the last age of 'big hits'
> was several billion years ago.
Don't you think that's a bit of good-spirited wishful thinking, Bill? Sort
of like whistling in the dark? "Billions of years ago" is a really long
time. I'm fairly certain there's been a really big flood more recently
than that, look at all the glaciations that have occurred more recently
than that. That's another part of the flood business, Bill. A lot of that
oceanic water that gets thrown about after an oceanic impact gets
vaporized, cools up in space, and comes down as snow. Things get pretty
cold after that happens, practically overnight from water the ice core
studies show.
Bill:
If so, then a crater on Earth from that
> time would have had to squash half a hemisphere to be readily detectable
> today.
Oh, come on Bill, you're just pulling my leg, aren't you? I thought every
young scientist understood that the last time that happened was when a
Mars-sized planet ran into proto-Earth, creating the Moon from the
impactor's mantle and Earth's continental plates from the precipitated
plasma that was confined by Earth's deshielded core magnetic field.
Bill:
Even on Mars, there has been enough erosion to erase most of its
> craters. On the Moon, not only does it not have an atmosphere to shield
> it, but I would suspect that it has not the gravitational tidal forces
> that Earth has to partially pulverise structurally weak asteroids/comets
> before they hit.
So you were just kidding me before. I'm glad you clarified things for me.
I was beginning to think you were a bit confused.
Bill:
>
> This is just my opinion, I'm not qualified to critisize.
Don't be so modest, Bill. Most modest people deserve to be so, and you're
a very clever fellow.
Bill:
I will,
> however, try to read some of the books you mentioned. Have a great day.
Thanks, Bill, I will have a good day today. See ya, round. You have a
good day, too.
Robert D. Brown, M.D.
Pelorus Research Laboratory
Note: Future posts will come under the title of "Theory of Land and Life"
and will be found on the Internet almost everywhere.
"The Keyboard is Mightier Than the Sword"
Subject: Weekly USGS Quake Report 9/5-11/96
From: michael@garlock.wr.usgs.gov (Andy Michael)
Date: Fri, 13 Sep 1996 01:45:30 GMT
NOTE: 5 or more maps will follow this post.
If you don't want to read them all the subjects include
the phrase "USGS Quake Map" for your killing convenience.
DISCLAIMER -- THIS IS NOT AN EARTHQUAKE PREDICTION OR WARNING!
The commentary provided with these map(s) is for INFORMATIONAL
USE ONLY, and SHOULD NOT be construed as an earthquake prediction,
warning, or advisory. Responsibility for such warnings rests with
the Office of Emergency Services of the State of California.
PLEASE REMEMBER -- THESE ARE PRELIMINARY DATA
Releasing these summaries on a timely basis requires that the
data, analysis, and interpretations presented are PRELIMINARY. Of
necessity they can only reflect the views of the seismologists who
prepared them, and DO NOT carry the endorsement of the U.S.G.S.
Thus while every effort is made to ensure that the information is
accurate, nothing contained in this report is to be construed as
and earthquake prediction, warning, advisory, or official policy
statement of any kind, of the U.S. Geological Survey, or the
U.S. Government.
FOR QUESTIONS CONCERNING THIS REPORT
Send e-mail to michael@andreas.wr.usgs.gov
DO NOT SEND EMAIL TO weekly@garlock.wr.usgs.gov It will not be read.
Seismicity Report for Northern California,
the Nation, and the World for the week of
September 5 - 11, 1996
Stephen R. Walter
U.S. Geological Survey
345 Middlefield Rd. MS-977, Menlo Park, CA 94025
San Francisco Bay Area
During the seven-day period ending at midnight on September 11, 1996,
the U.S. Geological Survey office in Menlo Park recorded 27 earthquakes of
magnitude one (M1) and greater within the San Francisco Bay area shown in
Figure 1. Five were as large as M2. This total compares to 26
earthquakes during the previous seven-day period (August 29 - September
4), four of which were as large as M2.
Two of the M2 events occurred on the central Calaveras about ten miles
north of Morgan Hill (#3/1). Week to week, this has been one of the two
most active fault segments in the Bay Area, the other being the creeping
segment of the San Andreas southeast of Watsonville. Slightly more
unusual were a trio of M1's at the north end of the Calaveras. Two M1.2
events occurred just northwest of Dublin with a M1.6 abut two miles east
of San Ramon (#7/1). Farther east a M2.0 occurred about fix miles
southwest of Brentwood (#1/1).
Also unusual was a M1.1 earthquake on the San Andreas just northeast
of Bolinas (#4/1). This part of the fault is considered to be "locked",
producing minor earthquakes only rarely. The most recent event in this
area was a M1.3 in much the same location in September, 1993.
In the South Bay, a M2.1 occurred Sunday morning on the creeping San
Andreas 13 miles southeast of Hollister (#5/1), followed minutes later by
a M2.2 on the Ortigalita fault about 13 miles north of the Pinnacles
(#6/1).
Northern & Central California
The largest earthquake measured M4.6 and occurred last Friday afternoon
on the Mendocino fracture zone about 110 miles west of Cape Mendocino
(#3/2). It was followed by a pair of M3 aftershocks. Closer to shore a
trio of M2 events occurred within the Gorda Plate, the oceanic plate that
underthrusts the Klamath Mountains of northwestern California and
southwestern Oregon (#5/2). The sole M2 onshore event occurred at a
depth of nearly 25 km, indicating that it too occurred within the
underthrusting Gorda Plate (#2/2).
Activity in the Coast Ranges included several M2's at the Geysers
geothermal area (#7/2), a M2.1 east of the central Maacama fault (#6/2),
and a M2.1 at the north end of the Maacama about ten miles northwest of
Laytonville (#10/2).
Central California experienced one felt earthquake: a M3.8 Saturday
afternoon on the creeping segment of the San Andreas about nine miles
north of Pinnacles National Monument (#8/2). A pair of M2's occurred
along the Big Sur coast about 16 miles northwest of San Simeon (#4/2) and
one M2.3 occurred nine miles southeast of Coalinga.
Activity along the eastern Sierra Nevada included a pair of M2's in the
Markleeville area (#1/2) and a M2.1 24 miles southwest of Portola (#9/2).
Long Valley Caldera
Two M2 events occurred along the southern rim of the caldera. The
first, a M2.2 last Thursday evening, occurred beneath Mammoth Mountain in
much the same location as a M2.0 on July 26 of this year (#1/3). The
following morning a M2.5 occurred along the southeast rim of the caldera
(#2/3). The only activity south of the caldera was a M2.0 near the south
end of the Round Valley fault (#3/3).
USA Seismicity (September 2 - 11)
The National Earthquake Information Center recorded no notable
earthquakes in the lower 48 states, outside of the California area. All
of these occurred along the California/Nevada border, the largest a pair
of M3.5 events in the Indian Wells Valley area north of China Lake (#4/4).
The Planet Earth (September 2 - 11)
Two moderate earthquakes produced significant damage in different
parts of the world. Last Thursday a M6.0 temblor near the Adriatic Coast
injured several people in Ston, Croatia (#2/5). A slightly larger M6.1
near the central Chilean coast damaged several nearby homes and was felt
in Santiago (#5/5). Minor damage was reported from a M5.0 that shook the
Halle-Zscherben area of north-central Germany (#6/5). The largest
earthquake on the planet was a M6.6 southeast of Taiwan but no damage was
reported from this offshore event (#3/5).
Other events of note include a M5.3 south of Honshu, Japan that
generated a small tsunami (26 cm) on the nearby island of Hachijo-jima
(#1/5) and a M6.1 in the Solomon Islands area (#4/5).
Table 1. Northern & Central California Seismicity (M>1.0)
--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR
YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG
96 SEP 5 816 14.72 35 49.99 121 19.03 8.25 27 2 .05 .3 .6 SSM 2.0
96 SEP 5 1124 29.98 38 48.09 122 48.13 3.20 26 .04 .2 .4 GEY 2.0
96 SEP 5 1359 43.39 36 48.77 121 21.07 6.57 45 .07 .2 .3 HOL 1.9
96 SEP 5 1630 25.05 37 24.93 118 34.74 12.77 16 .09 .4 .9 RVL 1.4
96 SEP 5 1632 47.41 38 42.16 119 39.00 4.12 23 1 .09 .4 2.8 WAK 2.5
96 SEP 5 1634 4.13 38 42.18 119 39.04 3.61 25 1 .10 .4 3.1 WAK 2.6
96 SEP 5 1710 48.59 38 29.67 118 20.34 4.35 29 .07 1.3 4.0 NEV 2.3
96 SEP 5 1822 48.77 40 57.05 123 26.26 24.45 19 .10 .3 1.7 KLA 2.5
96 SEP 5 1838 42.32 37 38.72 118 54.39 5.88 20 .09 .3 .6 SMO 1.6
96 SEP 5 1845 21.82 37 37.93 119 2.67 3.87 14 .08 .3 .8 MAM 1.3
96 SEP 5 1925 24.14 35 53.58 120 25.88 10.85 22 3 .05 .3 .4 GOL 1.5
96 SEP 5 1956 49.95 36 32.28 121 6.52 2.33 14 .07 .3 .6 PIN 1.3
96 SEP 5 2103 16.35 38 43.18 119 38.68 0.25 9 .05 1.0 3.3 WAK 1.8
96 SEP 5 2121 54.72 38 49.97 122 52.41 1.06 8 .02 .6 1.5 GEY 1.0
96 SEP 5 2142 57.34 38 49.55 122 47.75 4.08 15 .04 .2 .7 GEY 1.6
96 SEP 5 2237 53.88 36 25.03 120 25.90 12.87 10 .08 .9 1.1 COA 1.6
96 SEP 6 2 44.37 37 50.76 121 43.46 0.02 8 1 .29 5.1 2.1 GRN # 2.2
96 SEP 6 100 47.35 37 15.96 121 38.52 5.72 16 .08 .3 1.1 SFL 1.2
96 SEP 6 127 38.65 36 36.20 121 12.54 6.74 13 .03 .3 .7 PIN 1.0
96 SEP 6 330 2.06 37 32.77 118 25.98 7.50 14 .04 .3 .7 CHV 1.7
96 SEP 6 515 56.12 36 14.07 120 47.79 8.18 7 .07 .9 .6 BIT 1.5
96 SEP 6 546 50.11 37 37.31 119 2.06 6.63 22 .07 .3 .4 MAM 2.2
96 SEP 6 558 42.76 36 14.58 120 16.63 12.31 17 .05 .3 .4 COA 1.4
96 SEP 6 804 48.57 37 28.08 118 50.71 6.71 29 .07 .4 .7 MOR 2.2
96 SEP 6 856 58.21 37 38.62 118 55.72 10.86 16 .06 .4 .9 SMO 1.4
96 SEP 6 904 26.40 37 42.78 121 56.73 8.37 13 1 .08 .3 1.0 DAN 1.2
96 SEP 6 937 26.89 37 27.84 118 50.51 6.48 10 .08 1.1 1.8 MOR 1.0
96 SEP 6 1009 34.47 36 27.66 121 1.80 4.86 20 .06 .3 .6 BIT 1.0
96 SEP 6 1128 16.06 37 36.06 118 48.78 6.60 32 3 .06 .2 .4 HCF 2.7
96 SEP 6 1136 13.36 37 35.98 118 48.69 6.81 21 .07 .3 .5 MOR 1.5
96 SEP 6 1139 31.51 37 36.43 118 47.91 6.83 7 .03 .5 .8 HCF 1.3
96 SEP 6 1148 41.14 37 36.42 118 48.69 5.67 7 .12 .6 1.1 HCF 1.3
96 SEP 6 1240 31.80 37 36.08 118 29.73 10.87 24 .08 .4 .7 CHV 1.6
96 SEP 6 1305 37.00 37 32.68 118 49.46 10.33 14 .07 .6 1.0 MOR 1.2
96 SEP 6 1328 34.19 37 38.43 118 57.55 8.32 19 .12 .4 .7 SMO 1.5
96 SEP 6 1417 56.34 37 35.80 118 48.81 7.22 22 .08 .3 .6 MOR 1.8
96 SEP 6 1437 26.22 36 40.38 121 17.65 4.13 33 .06 .2 .4 STN 1.8
96 SEP 6 1717 9.66 39 33.13 123 22.49 5.87 13 .14 .4 1.5 MAA 1.9
96 SEP 6 1904 45.87 38 55.74 122 51.14 2.90 11 .17 .5 3.0 MAA 1.9
96 SEP 6 1912 19.37 38 54.81 123 11.60 0.02 12 .12 .3 1.6 PAR## 1.8
96 SEP 6 2042 29.55 40 23.67 126 24.49 9.98 70 1 .33 2.5 7.5 PON 4.5
96 SEP 6 2048 23.75 35 49.55 121 21.45 3.67 43 2 .05 .3 .4 SSM# 2.7
96 SEP 6 2103 51.95 37 35.98 118 48.59 6.24 7 .05 .4 .7 MOR 1.5
96 SEP 6 2105 23.29 35 49.56 121 20.97 3.11 15 2 .06 .4 .6 SSM 1.8
96 SEP 6 2115 14.89 40 28.76 126 11.10 4.17 40 2 .30 4.2 4.3 PON 3.3
--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR
YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG
96 SEP 6 2119 2.04 35 49.27 121 21.05 3.13 18 2 .09 .4 .7 SSM 1.8
96 SEP 6 2146 0.97 37 37.99 118 56.07 6.80 12 .12 .5 1.0 SMO 1.4
96 SEP 7 52 2.95 38 48.30 122 45.64 0.04 15 .24 .5 1.5 GEY## 1.7
96 SEP 7 121 9.31 37 39.94 119 21.68 19.66 20 1 .13 .5 1.5 KAI 2.1
96 SEP 7 202 12.99 39 26.04 123 9.08 5.49 15 .05 .3 1.6 BAR 1.7
96 SEP 7 632 14.40 36 44.12 121 20.05 8.02 21 1 .05 .2 .5 PAI 1.2
96 SEP 7 641 34.73 37 17.68 121 40.40 3.66 54 2 .07 .1 .7 SFL 2.0
96 SEP 7 643 49.59 40 28.85 126 4.68 0.09 30 2 .30 7.5 4.0 PON # 3.0
96 SEP 7 727 48.66 37 37.07 118 53.16 4.03 9 .09 .6 .9 SHE 1.3
96 SEP 7 744 59.39 40 18.74 124 27.75 8.41 8 1 .13 .9 1.0 MEN 1.8
96 SEP 7 859 59.81 35 49.56 121 21.30 3.66 37 2 .06 .3 .4 SSM# 2.2
96 SEP 7 900 42.18 38 48.72 122 48.69 3.66 18 2 .05 .2 .5 GEY 1.6
96 SEP 7 1153 10.61 37 28.20 118 50.75 3.80 22 .07 .4 .8 MOR 1.2
96 SEP 7 1624 59.25 38 48.69 122 48.67 3.94 13 .03 .3 .5 GEY 1.6
96 SEP 7 1703 14.50 37 26.57 118 33.90 8.87 18 2 .08 .3 .9 RVL 1.2
96 SEP 7 1731 9.53 37 32.60 118 50.14 6.00 18 2 .09 .3 .6 MOR 1.3
96 SEP 7 1736 48.73 37 42.75 121 56.87 8.38 8 1 .08 .4 1.9 DAN 1.2
96 SEP 7 1750 40.64 35 49.33 121 21.40 3.49 25 3 .09 .3 .5 SSM# 1.8
96 SEP 7 1909 41.56 38 42.31 119 39.19 0.74 25 3 .15 .8 2.6 WAK 2.3
96 SEP 7 1939 47.68 38 25.81 122 38.45 8.52 13 1 .05 .3 .5 ROG 1.4
96 SEP 7 1941 52.20 39 7.95 122 38.58 1.55 11 .12 .410.9 BAR - 1.5
96 SEP 7 2032 52.59 37 33.05 118 49.33 1.20 13 .03 .2 .3 MOR 1.4
96 SEP 7 2319 17.32 36 38.19 121 14.96 7.94 69 2 .09 .2 .3 STN 3.7
96 SEP 8 46 42.51 36 26.60 120 37.36 13.37 28 .13 .3 1.0 CRV 1.7
96 SEP 8 137 43.55 37 32.68 118 50.34 6.24 13 2 .10 .4 .7 MOR 1.2
96 SEP 8 249 18.68 36 37.93 121 14.73 6.66 21 1 .06 .3 .6 STN .9
96 SEP 8 428 12.65 36 34.23 120 32.17 11.73 34 2 .16 .3 1.3 CRV 1.9
96 SEP 8 505 30.95 37 55.56 122 40.40 7.12 8 1 .06 1.0 1.3 MAR 1.1
96 SEP 8 607 55.93 37 20.44 120 16.67 21.99 15 2 .34 1.0 1.1 JQN 2.0
96 SEP 8 656 21.92 37 21.17 121 43.07 7.42 30 .07 .2 .7 ALU 1.2
96 SEP 8 702 15.67 40 34.67 124 50.84 39.13 11 1 .23 4.5 2.9 EUR 2.6
96 SEP 8 914 34.81 37 32.51 118 50.08 6.09 23 .08 .3 .6 MOR 1.5
96 SEP 8 1027 59.05 38 47.37 122 45.29 2.13 19 .06 .2 .6 GEY 1.9
96 SEP 8 1049 0.15 36 37.93 121 14.83 6.66 11 1 .03 .4 .8 STN .6
96 SEP 8 1124 2.82 39 25.42 123 6.96 3.66 27 3 .09 .2 1.7 BAR 2.0
96 SEP 8 1225 37.33 38 50.27 122 46.52 1.34 31 .12 .2 .6 GEY 2.4
96 SEP 8 1437 14.80 38 49.25 122 48.63 4.03 44 .05 .1 .3 GEY 2.7
96 SEP 8 1512 23.00 36 40.89 121 18.46 6.47 65 2 .07 .1 .3 STN 2.2
96 SEP 8 1710 51.07 37 4.05 121 29.70 8.62 36 .06 .2 .4 CYS 1.4
96 SEP 8 1810 10.70 37 31.71 118 47.45 6.04 12 .07 .4 .7 MOR 1.2
96 SEP 8 1907 43.16 36 5.66 120 12.78 7.53 32 .13 .2 .7 COA 2.3
96 SEP 8 2013 57.09 38 49.02 122 48.71 2.94 16 .09 .3 .6 GEY 1.8
96 SEP 8 2027 23.05 38 48.99 122 48.57 3.75 7 .02 .5 .7 GEY 1.2
96 SEP 8 2227 52.60 36 48.59 121 29.68 12.69 9 .05 1.4 1.3 SJB 1.1
--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR
YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG
96 SEP 9 127 44.38 36 45.88 121 29.13 8.62 30 .21 .5 .9 SJB 1.4
96 SEP 9 333 52.25 36 35.81 120 44.87 1.66 11 .07 .6 3.5 CRV 1.5
96 SEP 9 359 17.54 36 43.07 121 10.93 5.11 64 3 .21 .3 .9 PAI 2.3
96 SEP 9 429 3.74 36 43.09 121 10.69 1.77 8 .17 1.5 1.4 PAI 1.0
96 SEP 9 518 1.22 38 49.43 122 47.61 3.91 8 .02 .4 .8 GEY 1.2
96 SEP 9 738 52.81 37 18.00 121 40.40 5.31 13 1 .10 .3 1.7 SFL 1.1
96 SEP 9 741 13.99 37 23.63 118 46.46 13.66 15 .07 .4 1.5 WCS 1.3
96 SEP 9 754 3.52 40 37.82 124 16.60 18.46 14 1 .06 .7 .5 EUR 1.8
96 SEP 9 817 20.02 38 49.03 122 50.98 2.40 9 .08 .4 1.1 GEY 1.3
96 SEP 9 831 30.33 37 31.66 118 49.65 7.21 18 .07 .4 .7 MOR 1.3
96 SEP 9 907 34.57 37 28.52 118 50.18 5.66 14 .07 .6 .9 MOR 1.0
96 SEP 9 1224 51.18 37 30.54 118 40.22 13.74 14 .08 .5 1.3 WCN 1.2
96 SEP 9 1307 45.79 35 49.38 121 21.16 2.91 27 3 .07 .4 .5 SSM# 1.8
96 SEP 9 1357 22.18 37 46.57 121 56.50 7.43 25 2 .06 .2 .7 DAN 1.5
96 SEP 9 1549 29.64 39 38.81 123 16.88 1.25 11 .15 .514.3 BAR - 1.8
96 SEP 9 1614 38.30 36 33.61 121 13.77 5.18 23 1 .06 .2 .6 PIN 1.4
96 SEP 9 1755 29.39 38 42.43 122 49.28 6.06 14 .09 .3 .8 GEY 1.3
96 SEP 9 1922 52.12 38 45.28 122 41.81 1.53 9 .05 .4 .7 NAP 1.2
96 SEP 9 1936 29.55 37 56.33 118 8.81 1.70 27 .11 1.0 9.1 NEV - 2.2
96 SEP 9 2006 16.49 39 28.41 123 18.64 10.15 13 3 .15 .4 1.8 MAA 1.6
96 SEP 9 2200 38.76 36 51.39 121 35.28 6.45 52 1 .13 .2 .4 SJB 1.9
96 SEP 9 2203 41.78 37 36.68 121 46.54 7.92 10 .06 .3 .6 SUN 1.1
96 SEP 9 2242 37.55 37 46.62 118 22.38 4.90 21 .19 .7 2.0 WHI 2.2
96 SEP 10 152 28.46 37 24.22 121 43.91 0.03 10 .10 .4 3.3 ALU## 1.2
96 SEP 10 157 36.55 37 22.96 121 44.29 7.18 53 3 .06 .1 .4 ALU 1.8
96 SEP 10 330 21.21 39 25.97 121 32.39 24.38 17 1 .08 .5 1.0 ORO 1.9
96 SEP 10 437 17.54 37 26.77 118 22.95 31.71 12 .40 3.4 5.7 CHV 1.6
96 SEP 10 500 51.26 35 31.13 118 12.50 13.35 13 .10 .4 .7 WWF 1.9
96 SEP 10 528 57.31 36 33.64 121 13.75 5.11 14 .05 .3 .9 PIN 1.4
96 SEP 10 717 39.04 40 21.72 124 26.25 5.70 9 .06 1.2 .8 MEN 2.2
96 SEP 10 805 57.34 40 49.81 123 20.55 30.94 7 1 .04 .6 2.4 KLA 2.1
96 SEP 10 1527 34.99 39 29.42 120 39.64 22.00 16 3 .13 1.2 2.8 WAK 2.3
96 SEP 10 1558 35.78 37 25.28 118 37.23 12.21 31 1 .09 .3 .8 RVL 2.2
96 SEP 10 2037 48.67 37 15.81 121 38.82 5.00 56 2 .07 .1 .5 SFL 2.0
96 SEP 10 2102 21.82 40 44.54 124 28.66 19.12 16 1 .06 1.1 .7 EUR 2.1
96 SEP 10 2113 52.69 36 26.19 121 0.83 5.74 20 .06 .3 .7 BIT 1.8
96 SEP 10 2126 6.30 38 49.45 122 47.51 3.91 8 .03 .4 .8 GEY 1.2
96 SEP 10 2140 31.55 37 32.46 121 52.42 5.76 56 2 .30 .3 .7 MIS 2.0
96 SEP 11 36 15.74 38 45.53 122 44.47 1.73 10 .07 .4 .9 GEY 1.7
96 SEP 11 327 15.47 38 48.86 122 47.87 3.30 12 .03 .3 .6 GEY 2.0
96 SEP 11 954 47.13 36 51.95 121 35.80 6.74 23 .09 .3 .6 SJB 1.6
96 SEP 11 1131 39.85 39 49.09 123 36.88 5.36 17 1 .08 .3 .8 MAA 2.0
96 SEP 11 1352 51.68 38 48.72 122 48.68 4.19 9 .02 .3 .8 GEY 1.4
96 SEP 11 1538 36.98 37 30.35 118 52.23 2.84 13 .07 .6 2.1 MOR 1.4
96 SEP 11 1742 4.44 37 38.46 118 52.60 7.18 7 .10 .7 .9 SMO 1.1
--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH N N RMS ERH ERZ DUR
YR MON DA HRMN SEC DEG MIN DEG MIN KM RD S SEC KM KM REMKS MAG
96 SEP 11 1751 35.07 37 32.21 118 50.99 10.01 20 .09 .4 .6 MOR 1.4
96 SEP 11 2044 41.01 36 47.12 121 16.20 7.97 12 .03 .4 .8 PAI 1.0
96 SEP 11 2217 35.45 36 22.39 121 1.27 0.01 9 .09 .3 .5 BIT## 1.9
96 SEP 11 2350 54.51 36 42.93 121 10.59 1.27 17 .19 .6 2.9 PAI # 1.5
TABLE 2.
Data from National Earthquake Information Center (NEIC)
UTC TIME LAT LONG DEP GS MAGS SD STA REGION AND COMMENTS
HRMNSEC MB Msz USED
------------------------------------------------------------------------------
SEP 02
000835.9 44.392N 7.343E 10G 0.5 13 NORTHERN ITALY. ML 3.0 (LDG).
002913.5* 1.079N 121.853E 33N 4.7 0.9 19 MINAHASSA PENINSULA, SULAWESI
005206.5* 39.617N 143.723E 33N 4.5 0.6 12 OFF EAST COAST OF HONSHU, JAPAN
015719.5* 36.014N 70.849E 107D 4.3 1.6 17 HINDU KUSH REGION, AFGHANISTAN
023550.5* 3.938S 69.449E 10G 4.4 1.1 23 CHAGOS ARCHIPELAGO REGION
025904.0? 11.62 N 43.67 E 10G 4.3 1.2 11 ETHIOPIA
030808.2* 8.422N 126.002E 33N 4.5 0.9 16 MINDANAO, PHILIPPINE ISLANDS
121015.3* 26.181N 128.770E 33N 4.2 1.5 16 RYUKYU ISLANDS
130627.2? 11.83 N 61.96 W 120G 0.4 6 WINDWARD ISLANDS. MD 3.2 (TRN).
222548.0* 36.704N 71.264E 150G 4.2 1.1 9 AFGHANISTAN-TAJIKISTAN BORD REG.
SEP 03
002900.6& 67.240N 144.950W 25G 29 NORTHERN ALASKA. . ML 3.6
003434.3* 7.148S 155.624E 33N 4.9 0.9 20 SOLOMON ISLANDS
050806.9* 37.517N 1.547W 10G 0.5 5 SPAIN. mbLg 3.1 (MDD).
092133.7* 7.912S 122.351E 250G 5.0 1.0 20 FLORES SEA
095726.8 40.212N 142.637E 33N 5.1 0.8 100 NEAR EAST COAST OF HONSHU, JAPAN
105849.6* 23.070S 68.739W 104D 4.3 1.2 27 NORTHERN CHILE
120445.6 14.319N 144.053E 33N 4.7 0.7 26 MARIANA ISLANDS
124729.2 33.759N 140.098E 93* 3.9 1.1 27 SOUTH OF HONSHU, JAPAN
160153.6* 7.218S 155.628E 33N 4.4 0.9 19 SOLOMON ISLANDS
161852.1* 7.252S 155.528E 33N 4.9 1.1 39 SOLOMON ISLANDS
163304.6* 7.241S 155.557E 33N 4.3 0.7 14 SOLOMON ISLANDS
191723.3* 18.513N 146.440E 33N 4.1 0.7 14 MARIANA ISLANDS
200400.0* 12.851S 168.986E 600G 4.5 1.0 76 SANTA CRUZ ISLANDS REGION
203911.0& 65.140N 148.590W 18G 31 NORTHERN ALASKA. . ML 4.2
213803.0* 54.336N 166.478W 33N 4.2 1.2 16 FOX ISLANDS, ALEUTIAN ISLANDS.
ML 4.2 (AEIC).
231101.1* 40.200N 49.422E 33N 3.8 1.1 13 EASTERN CAUCASUS
SEP 04
013706.0? 20.55 N 121.51 E 33N 4.6 0.8 7 PHILIPPINE ISLANDS REGION
040128.0* 38.996N 9.353W 10G 0.8 10 PORTUGAL. MD 3.6 (MDD).
064551.4* 36.382N 70.785E 200* 4.5 1.1 22 HINDU KUSH REGION, AFGHANISTAN
101825.9 41.907N 126.783W 10G 4.5 4.9 1.2 129 OFF COAST OF NORTHERN CALIFORNIA
102325.9* 41.804N 126.845W 10G 3.7 1.1 17 OFF COAST OF NORTHERN
CALIFORNIA. ML 3.6 (GS).
102450.2* 41.811N 126.838W 10G 4.7 1.5 44 OFF COAST OF NORTHERN CALIFORNIA
103256.9 35.105N 117.538W 5G 1.4 29 CENTRAL CALIFORNIA. ML 3.1 (GS).
103807.4* 56.007S 146.987E 10G 5.2 1.1 34 WEST OF MACQUARIE ISLAND
104715.6 41.755N 126.993W 10G 3.9 1.1 48 OFF COAST OF NORTHERN CALIFORNIA
104938.9? 41.55 N 126.78 W 10G 3.3 1.5 9 OFF COAST OF NORTHERN CALIFORNIA
141158.1 20.746S 178.889W 600G 4.9 0.8 40 FIJI ISLANDS REGION
160735.0* 57.433N 23.592E 10G 4.4 1.1 6 BALTICS-BELARUS-NW RUSSIA REG.
171122.0 34.840N 139.697E 45 4.5 0.9 39 NEAR S. COAST OF HONSHU, JAPAN.
Felt (III JMA) at Tateyama and (II JMA) at Tokyo and Yokohama.
181601.5 31.500N 139.867E 33N 5.3 5.1 1.2 84 SOUTH OF HONSHU, JAPAN. Mw 5.7
(GS), 5.7 (HRV). Local tsunami generated with maximum recorded wave
heights (peak-to trough) of 26 cm on Hachijo-jima, 20 cm at Okada, O-
shima and 16 cm on Miyake-jima.
185534.5* 35.243N 140.233E 114* 0.7 13 NEAR EAST COAST OF HONSHU, JAPAN
190838.4* 4.790N 77.787W 33N 4.6 1.2 9 NEAR WEST COAST OF COLOMBIA
191859.3* 6.441S 130.447E 33N 4.9 0.9 19 BANDA SEA
195949.1 37.546N 1.436W 10G 0.7 12 SPAIN. mbLg 3.1 (MDD).
203952.5* 35.396N 46.303E 33N 3.5 1.2 17 IRAN-IRAQ BORDER REGION
224013.7 7.143S 155.672E 33N 4.8 0.9 57 SOLOMON ISLANDS
224843.6 34.973N 116.938W 5G 1.2 25 SOUTHERN CALIFORNIA. ML 3.3
231804.7* 37.118N 2.841E 10G 3.4 1.1 16 WESTERN MEDITERRANEAN SEA.
SEP 05
082048.8 36.726N 116.285W 5G 0.7 11 CALIFORNIA-NEVADA BORDER.
ML 3.1 (GS).
125203.1 10.330S 161.155E 33N 5.1 4.4 0.7 46 SOLOMON ISLANDS
152640.5* 0.405N 120.483E 33N 5.1 1.4 14 MINAHASSA PENINSULA, SULAWESI
153626.9 0.352N 120.397E 33N 5.3 5.0 1.5 57 MINAHASSA PENINSULA, SULAWESI
162416.2 36.068N 117.752W 10G 0.9 45 CALIFORNIA-NEVADA BORDER. ML 3.5
172424.7 37.595N 1.534W 8 3.1 1.1 20 SPAIN. mbLg 3.4 (MDD).
204409.3 42.819N 17.970E 10G 5.6 6.0 1.3 204 ADRIATIC SEA. Mw 5.7 (GS), 6.0
(HRV). Several people injured at Ston, Croatia. Felt in parts of Bosnia
and Herzegovina, Croatia; also felt in Yugoslavia.
212221.6% 35.949S 73.033W 20G 0.4 12 OFF COAST-CENTRAL CHILE. MD 4.6
214330.2 42.840N 18.088E 10G 4.7 1.4 71 NORTHWESTERN BALKAN REGION
234205.9 21.877N 121.430E 20G 6.3 6.6 1.1 136 TAIWAN REGION. Mw 6.6 Felt.
SEP 06
020455.0 21.722N 121.367E 20G 5.3 1.2 36 TAIWAN REGION
022029.6* 21.671N 121.422E 20G 5.0 1.4 14 TAIWAN REGION
025943.8 42.704N 17.899E 10G 0.7 15 ADRIATIC SEA. ML 3.3 (ROM).
033152.1 42.767N 17.970E 10G 0.7 20 ADRIATIC SEA. ML 4.1 (ROM).
034654.9 42.848N 17.721E 10G 1.0 26 ADRIATIC SEA. ML 3.7 (ROM).
080640.4* 50.816N 156.792E 33N 4.9 0.4 17 KURIL ISLANDS
091819.7* 0.573N 120.604E 33N 4.8 0.8 14 MINAHASSA PENINSULA, SULAWESI
111048.5* 42.690N 18.136E 10G 4.4 0.6 6 NORTHWESTERN BALKAN REGION
113434.8? 22.33 N 121.36 E 20G 5.4 4.9 1.0 33 TAIWAN REGION. Felt on Taiwan.
123941.2 7.251S 155.771E 33N 5.5 5.8 0.9 38 SOLOMON ISLANDS. Mw 5.9
152302.9* 0.403N 120.345E 33N 4.6 1.2 14 MINAHASSA PENINSULA, SULAWESI
170346.7 7.312S 155.849E 33N 5.6 6.1 1.2 43 SOLOMON ISLANDS. Mw 6.3
204229.4 40.324N 126.251W 10G 4.9 1.2 113 OFF COAST OF NORTHERN CALIFORNIA
211507.7? 40.37 N 126.77 W 10G 0.7 29 OFF COAST-NORTHERN CALIFORNIA ML 3.9
230157.8* 31.619S 68.918W 100G 4.9 0.9 24 SAN JUAN PROVINCE, ARGENTINA
234847.8? 6.74 S 155.89 E 33N 5.2 5.2 1.0 17 SOLOMON ISLANDS
SEP 07
025530.2* 20.367S 174.362W 33N 4.9 4.9 0.5 27 TONGA ISLANDS
041755.0* 42.856N 17.990E 10G 4.6 1.1 15 ADRIATIC SEA
054533.4* 42.929N 17.973E 10G 4.5 1.0 20 ADRIATIC SEA
090603.9* 7.203S 155.761E 33N 5.3 5.6 1.4 20 SOLOMON ISLANDS
095559.0? 16.56 N 97.95 W 33N 4.4 0.8 17 OAXACA, MEXICO
103159.9? 32.76 S 177.83 W 33N 4.9 5.2 0.6 9 SOUTH OF KERMADEC ISLANDS
231916.8 36.627N 121.277W 10G 0.9 86 CENTRAL CALIFORNIA. ML 3.8 (GS).
Felt at Salinas.
SEP 08
080813.1 15.594S 73.069W 97D 5.5 0.9 71 SOUTHERN PERU. Mw 5.7
081244.2* 2.851N 127.250E 33N 5.6 5.2 1.3 29 NORTHERN MOLUCCA SEA
105602.5* 51.440N 176.019W 33N 4.2 0.9 7 ANDREANOF ISLANDS, ALEUTIAN IS.
110714.6 51.443N 176.188W 33N 5.0 4.4 1.0 50 ANDREANOF ISLANDS, ALEUTIAN IS.
113458.3* 19.399S 179.611W 676D 4.7 0.5 43 FIJI ISLANDS REGION
114251.1* 19.514S 179.681W 600G 4.8 0.4 46 FIJI ISLANDS REGION
224029.7 35.107N 117.538W 5G 1.0 31 CENTRAL CALIFORNIA. ML 3.0 (GS).
SEP 09
002038.8 31.947S 71.391W 39G 6.1 5.4 0.8 83 NEAR COAST OF CENTRAL CHILE. Mw
6.0 (GS), 5.9 (HRV). Some damage to adobe houses in the epicentral area.
Felt (V) at La Calera, La Ligua, Los Andes, Los Vilos, Papudo, Quillota,
Quintero, Valparaiso, Vina del Mar and Zapallar; (IV) at San Antonio and
Santiago; (III) at La Serena.
011419.6 42.876N 18.088E 10G 0.6 25 NORTHWESTERN BALKAN REGION. ML 3.9
043421.0* 30.708N 130.532E 33N 5.4 5.2 0.9 57 KYUSHU, JAPAN
153821.6* 12.527N 88.297W 52D 4.8 1.0 35 OFF COAST-CENTRAL AMERICA
155705.8 42.835N 18.002E 10G 4.7 0.8 22 NORTHWESTERN BALKAN REGION
SEP 11
002531.8 35.755N 117.585W 5G 1.0 58 CENTRAL CALIFORNIA. ML 3.6 (GS).
033636.6 51.311N 11.733E 10G 5.0 0.8 34 GERMANY. Slight damage in the
Halle-Zscherben area.
Note: Computer users can get faster access to the Weekly Seismicity
Reports in any of three ways:
1. World-Wide-Web (WWW) access: http://quake.wr.usgs.gov
2. Anonymous FTP access: quake.wr.usgs.gov
(in pub/www/QUAKES/WEEKREPS)
3. Email Access: (send email to michael@andreas.wr.usgs.gov)
Notes for Table 1:
Origin time in the list is in GMT, in the text and on maps
it is in local time.
N RD: is the number of readings used to locate the event.
N S: is the number of S waves in N RD.
RMS SEC: is the root mean squared residual misfit for the
location is seconds, the lower the better, over 0.3
to 0.5 seconds is getting bad, but this is machine,
not hand timed, data.
ERH: is the estimated horizontal error in kilometers.
ERZ: is the estimated vertical error in kilometers.
N FM: is the number of readings used to compute the magnitude.
REMKS: obtuse region codes that denote the velocity model
used to locate the event.
DUR MAG: is the magnitude as determined from the duration of
the seismograms, not the amplitude. Sort of like
going to echo canyon and measuring how loud your
yell is by counting echos.
FIG: denotes the figure/event number in the maps posted separately.