From: cowen@jade.ucdavis.edu
Newsgroups: ca.earthquakes,sci.geo.geology
Subject: Caltech Weekly Earthquake Report, 8 October 1992
Date: 9 Oct 92 23:14:28 GMT
Reply-To: cowen@jade.ucdavis.edu
Followup-To: ca.earthquakes
Organization: Geology Department, University of California, Davis

Here is the text of the Caltech weekly report. It accompanies a postscript
map that I can't or won't re-post because it's a very big file. You can
ftp the text and map from seismo.gps.caltech.edu under successive
directories pub and ca.earthquakes. 
I've edited the text lightly, but the information is unaffected.

Weekly Earthquake Report for Southern California, October 1 - 7, 1992

	Prepared by:  Kate Hutton, Seismological Laboratory
                      (kate@bombay.gps.caltech.edu)
		      Lucy Jones, U.S. Geological Survey
		      California Institute of Technology

	This document is a commentary on current seismic activity.  The 
	earthquakes discussed have been detected and processed 
	automatically.  All epicenters and magnitudes have been reviewed 
	to exclude obvious blunders; however, they must still be 
	considered preliminary.  For further information, please contact 
	the authors or the Caltech Public Relations Office at (818) 356-6326.

			--------------------------------

	This week's Report covers the time period from midnight Thursday
	morning, October 1, Pacific Daylight Time, to midnight Wednesday 
	night, October 7, Pacific Daylight Time.  Aftershocks of the 
	Landers earthquake continue, as they will for several years at 
	least.  The map includes a nearly complete set of earthquakes of 
	M2.5 or larger, plus many smaller ones that happen to have made 
	it through the data processing.  There are 531 in all.
		Landers and Big Bear aftershocks continue to die off
	as expected.  This week's seismicity looks fairly unremarkable,
	except perhaps for a slight emphasis on the northern end of the
	Landers rupture.  The largest two events, M4.3 and M3.5, were
	both there.  Those two are the only ones that seem to have been
	felt by the general public.
		Table 1 lists only earthquakes of M2.5 or larger.  Times 
	are local times; if you want Greenwich Mean Time, add 7 hrs. to 
	the Pacific Daylight Time listed.

	Table 1
	-------
	Date  Time     N Lat.   W Long.   Mag

	-------------------------------------------------------------
10/1   7:25 am  33 46.6  116 10.5  2.5  4 mi. NNE of Indio
10/1  10:39 am  34 32.5  116 32.8  3.0  23 mi. ENE of Lucerne Valley
10/1   1:47 pm  34 21.4  116 27.0  3.1  16 mi. N of Yucca Valley
10/1   5:45 pm  36  4.9  117 40.9  2.7  15 mi. ESE of south end of Haiwee
Reservoir
10/1   5:55 pm  34 16.2  116 36.3  2.5  13 mi. NW of Yucca Valley
10/1   7:02 pm  34 34.8  116 35.6  2.9  22 mi. ENE of Lucerne Valley
10/1  10:22 pm  34 57.6  116 56.0  2.7  7 mi. NE of Barstow
10/2  12:19 am  34 36.1  116 38.1  4.3  20 mi. ENE of Lucerne Valley Felt
10/2  12:28 am  34 36.1  116 37.8  2.7  	"
10/2  12:29 am  34 36.1  116 37.6  2.7  	"
10/2   1:06 am  34 36.0  116 37.8  2.5  	"
10/2   1:32 am  34 36.1  116 37.8  2.6  	"
10/2   1:48 am  34 36.3  116 36.6  2.9  	"
10/2   4:36 am  36  1.5  117 58.5  2.6  2 mi. SW of Coso Junction
10/2   5:12 am  34 36.3  116 37.6  3.5  21 mi. ENE of Lucerne Valley
10/2   6:05 am  35  0.9  116 58.1  2.9  9 mi. NNE of Barstow
10/2   8:06 am  34 36.0  116 37.7  3.0  21 mi. ENE of Lucerne Valley
10/2   8:49 am  33 58.4  116 23.1  3.1  6 mi. E of Desert Hot Springs
10/2   9:15 am  35  1.2  116 58.0  2.5  9 mi. NNE of Barstow
10/2  10:13 am  35  0.9  116 58.3  2.5  	"
10/2  10:22 am  34 37.4  116 34.5  2.5  24 mi. ENE of Lucerne Valley
10/2   1:05 pm  35  0.7  116 57.7  2.6  9 mi. NNE of Barstow
10/2   1:10 pm  34 36.2  116 37.8  2.6  21 mi. ENE of Lucerne Valley
10/2   2:42 pm  34  2.1  117 11.2  3.3  1 mi. SSW of Redlands
10/2   2:49 pm  34 30.7  116 33.3  2.5  24 mi. NE of Big Bear City
10/2   5:04 pm  34 36.2  116 37.9  2.7  20 mi. ENE of Lucerne Valley
10/2   5:12 pm  35  0.7  116 58.3  2.6  9 mi. NNE of Barstow
10/2   7:31 pm  34 21.4  116 27.2  2.6  16 mi. N of Yucca Valley
10/3  12:29 am  34 30.9  116 32.4  3.0  24 mi. NE of Big Bear City
10/3   7:00 am  34 47.8  116 17.5  3.1  34 mi. SSW of Baker
10/3   9:31 am  34 58.9  116 57.0  2.7  7 mi. NNE of Barstow
10/3  12:23 pm  36 31.2  117 47.8  2.7  15 mi. ESE of Lone Pine
10/3   3:08 pm  33 58.8  116 55.5  2.5  4 mi. NE of Beaumont
10/3   4:21 pm  34 32.2  116 32.4  2.7  25 mi. NE of Big Bear City
10/3  10:37 pm  34 26.1  116 31.1  2.5  22 mi. N of Yucca Valley
10/3  11:02 pm  34 37.5  116 30.1  2.5  28 mi. ENE of Lucerne Valley
10/4   1:17 am  33 58.5  116 21.7  2.6  8 mi. E of Desert Hot Springs
10/4   3:18 am  34 36.0  116 37.8  2.7  20 mi. ENE of Lucerne Valley
10/4   5:17 am  34  6.2  116 55.7  2.6  5 mi. W of Mt. San Gorgonio
10/4   6:06 am  35 58.6  118 21.2  2.9  24 mi. NNE of the town of Lake Isabella
10/4   8:56 am  36 31.2  117 47.9  2.6  15 mi. ESE of Lone Pine
10/4   3:28 pm  34 57.7  116 56.0  3.2  7 mi. NE of Barstow
10/4  11:07 pm  34 15.3  116 26.2  2.9  9 mi. N of Yucca Valley
10/4  11:36 pm  34 34.7  116 29.6  2.6  31 mi. N of Yucca Valley
10/5  12:15 am  34 14.0  116 51.2  2.8  2 mi. S of Big Bear City
10/5  12:43 am  34 55.9  116 54.7  2.8  7 mi. ENE of Barstow
10/5   1:54 am  34  2.0  117 11.1  2.5  1 mi. SSW of Redlands
10/5   3:06 am  34 24.9  116 28.8  3.5  20 mi. N of Yucca Valley Felt
10/5   4:25 am  35 40.2  117 37.4  2.7  4 mi. NE of Ridgecrest
10/5   4:16 pm  34 22.3  116 25.7  3.3  17 mi. N of Yucca Valley
10/5   5:06 pm  34 35.3  116 33.3  2.5  24 mi. ENE of Lucerne Valley
10/6  12:31 pm  34 38.6  116 31.1  3.0  27 mi. ENE of Lucerne Valley
10/6   2:32 pm  34 11.9  116 26.1  3.5  5 mi. N of Yucca Valley
10/6   2:43 pm  34 39.2  116 21.2  2.5  37 mi. N of Yucca Valley
10/6   4:23 pm  34 12.6  116 26.1  2.6  6 mi. N of Yucca Valley
10/6   5:37 pm  34  2.6  116 19.2  2.5  8 mi. SE of Yucca Valley
10/6   7:18 pm  36 16.9  117 28.2  2.9  3 mi. S of Panamint Springs
10/6   8:26 pm  34 56.5  116 55.9  2.9  6 mi. NE of Barstow
10/7   4:48 am  35  2.6  116 58.8  2.6  11 mi. NNE of Barstow
10/7  10:25 am  33 10.9  115 36.4  2.6  6 mi. SW of Niland
10/7  10:26 am  33 11.4  115 36.1  3.3  5 mi. SW of Niland
10/7   2:41 pm  34 34.9  116 37.3  2.8  20 mi. ENE of Lucerne Valley
10/7   7:37 pm  36  5.2  117 40.7  2.6  15 mi. ESE of south end of Haiwee
Reservoir
	-------------------------------------------------------------
Richard Cowen