[From Rick Marken (920628)]
Well, now I know why LA is the rock and roll capitol of
America. Two earthquakes this morning. The first was a
doosy. I estimated it at 7.2. The last I heard the instrument
based measure was 7.4. The second was a bit smaller (by my
perception) - I estimated 7.0. I heard that that was the
current estimate.
Talk about perceptions that you can't control. I don't
remember feeling a nice, sustained quake like that since
I was a kid (and, indeed, they said that this was the biggest
earthquake, in epicentral magnitude, to hit the LA area
in 40 years. And I remember THAT one. I was six and my
dad took me for a tour of the house during it; he's a phenomena
freak too).
I have been able to call earthquake magnitudes to within
0.2 Richter points for the last four earthquakes that I have
experienced. This is quite a feat (if I do say so
myself) since my distance from the epicenter is, of course,
always quite different (I was as close as 10 miles to one; I
was a comfortable 120 mi from this one). I wonder if anyone
has done any earthquake psychophysics?
Have a nice, stable sunday.
Rick
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Richard S. Marken USMail: 10459 Holman Ave
The Aerospace Corporation Los Angeles, CA 90024
E-mail: marken@aero.org
(310) 336-6214 (day)
(310) 474-0313 (evening)