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Science Forum Index » Geology - Earthquakes Forum » Peru 7.9
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| Jo Schaper |
Posted: Sun Aug 19, 2007 11:46 am |
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David Oberman wrote:
Quote: Jo Schaper <jospamnotschaper34@5socket78dot9net> wrote:
That's not entirely true. Only the moment magnitude is roughly close to
Richter. There are many other scales, including the Mercalli, which are
are numerically nowhere near Richter.
Here's what the USGS says:
http://earthquake.usgs.gov/aboutus/docs/020204mag_policy.php
--In 1935, Charles Richter developed the local magnitude, ML scale for
moderate-size (3 < ML < 7) earthquakes in southern California. The ML
scale is often called the “Richter scale” by the press and the public.
All of the currently used methods for measuring earthquake magnitude
(ML, duration magnitude mD, surface-wave magnitude MS, teleseismic
body-wave magnitude mb, moment magnitude M, etc.) yield results that
are consistent with ML. In fact, most modern methods for measuring
magnitude were designed to be consistent with the Richter scale.--
Mercalli? Isn't that just a system for rating the human-felt intensity
of shaking in any given spot? It's not really a "scale" in the sense
of measuring quake magnitude.
It is a scale in that it puts similar events in rank order, and is used
to measure pre-instrumentation quakes. It may not have the precision of
instrumented data, but it is most assuredly a scale. |
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| Weatherlawyer |
Posted: Sun Aug 19, 2007 9:29 pm |
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On Aug 17, 9:09 am, Belba Grubb <trungsister...@yahoo.com> wrote:
Quote: On Aug 16, 5:28 pm, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:
Right then.
The fat lady is on stage so get ready for the finale. You will know
when this disastrous spate of spells is over when the forest fires get
rained on and when the flooded fields get a warm, sunny and windy
spell.
I guess we're in the clear then - the burning rain forest at Kilauea
got soaked by Flossie, and here I sit on warm, sunny Mississippi Delta
earth, amid corn and cotton fields, that 80 years ago were all covered
by 10 feet of water (reference:http://www.rms.com/Publications/1927_MississippiFlood.pdf
). (The wind happens every afternoon due to convection brought about
by the daily 100-plus degree weather lately.)
Cue Miz Smith, and hit it!:http://www.god-bless-america-lyrics.com/katesmith1.wav
Barb
----------
"In a cavern, in a canyon, Excavating for a mine Dwelt a miner, Forty-
niner, And his daughter, Clementine..."
-- Percy Montrose
That's not what I heard.
(I just got the audio sorted.)
What's the weather like? |
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| Weatherlawyer |
Posted: Sun Aug 19, 2007 9:34 pm |
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On Aug 16, 11:28 pm, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:
Quote:
We were waiting for Weatherleawyer's post-diction. Someone
always claims to have predicted these things after the fact.
So kind. I always get a suitable glitch in my computer to help me out
on these occasions.
Right then.
The fat lady is on stage so get ready for the finale. You will know
when this disastrous spate of spells is over when the forest fires get
rained on and when the flooded fields get a warm, sunny and windy
spell.
But you didn't really need me to point that out to you, did you, you
moron.
I may have been a little hasty there but who needs to stay on while a
soprano screeches? And a fat one at that.
Here is the answer to what I was predicting in case anyone was
wondering:
On May 19, 8:28 am, Weatherlawyer <Weatherlaw...@gmail.com> wrote:
Quote: On May 16, 10:29 pm, Weatherlawyer <Weatherlaw...@hotmail.com> wrote:
IsupposeI'dbettergetweavingandsortoutthenextlikelydates
for massive seismic or weather interludes.
May 2 10:09 Wet
May 10 04:27 ?
May 16 19:27 Similar to May 10 in almost all respects. And this is a
wet spell.
May 23 21:03 Thunder thus wet.
Jun 1 01:04 Wet
Jun 8 11:43 ? Neither one thing or the other. Perhaps a col in normal
runs but with so many wet spells this will be wet too.
I think this is where the penny dropped about super-cyclones in their
various basins. Or at least began it's descent. The toilet door was
still registering vacant alas.
I could have got my shit together years ago. And all those deaths are
down to me. Not that I would have been listened to. I will sleep on
it, no fear.
Quote: Jun 15 03:13 Thundery.
Jun 22 13:15 Wet
****Interlude****
Jun 30 13:49 ? This is a weak fine spell.
**Or it might be here**
Jul 7 16:54 And this is a strong fine one. *Or here*
Or here
Jul 14 12:04 I forgot to mention, with a propensity to mists this type
of spell tends to produce hurricanes. Perhaps I should mention that
for 8th June too? And yes I know what's being displayed on:http://
satellite.ehabich.info/hurricane-watch.htm ATM. Also ditto again for
20th August's spell.
Jul 22 06:29 More hurricana.
Jul 30 00:48 Here too and wet in Britain.
Aug 5 21:20 With thundery showers
****Interlude****
Aug 12 23:03 Fine
Interlude
Aug 20 23:54 Ibid (sic)
Interesting times!
Stay tuned.
And here is the NEIC list:
2007 08 16 - Solomon Islands - M 6.7
2007 08 15 - Near the Coast of Central Peru - M 8.0 Fatalities 450
2007 08 15 - Andreanof Islands, Aleutian Islands, Alaska - M 6.5
2007 08 14 - Island of Hawaii, Hawaii - M 5.4
2007 08 08 - Java, Indonesia - M 7.5
2007 08 02 - Andreanof Islands, Aleutian Islands, Alaska - M 6.7
2007 08 01 - Vanuatu - M 7.2
2007 07 17 - Tanzania - M 5.9
2007 07 16 - Sea of Japan - M 6.8
2007 07 16 - Near the west coast of Honshu, Japan - M 6.6 Fatalities
9
2007 06 28 - Bougainville region, Papua New Guinea - M 6.7
2007 06 13 - Offshore Guatemala - M 6.7
2007 05 09 - Offshore Northern California - M 5.2
2007 05 08 - Western Montana - M 4.5
2007 04 01 - Solomon Islands - M 8.1 Fatalities 54
Well I got the right year.
Not brilliant. But imagine if I had ever received something a little
more convivial than the usual barracking. |
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