SOUTHERN CALIFORNIA
	     	           SEISMOGRAPHIC NETWORK

			  A Cooperative Project of
	          Caltech and the U.S. Geological Survey


						April 3, 1997

		Weekly Earthquake Report for Southern California
		------------------------------------------------
        	            March 27 - April 2, 1997

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

	For further information, please contact the authors or the 
	Caltech Public Relations Office at 818-395-6327.  For daily 
	updates, call our Earthquake Information Hotline: 818-395-6977.
			--------------------------------
	This week's Report covers the time period from midnight Thursday
	morning, March 27, Universal Time (ie. GMT), to midnight 
	Wednesday night, April 2, Universal Time.  In local time, 
	the period of coverage is from 4 p.m., March 26, Pacific 
	Standard Time, to 4 p.m., April 2, Pacific Standard Time.
	We detected and processed 254 earthquakes during the seven-day
	period covered.
		There was only one M3+ quake this week, and only one
	quake felt, and they were not the same quake.  The largest event
	was a M3.4 off the northwestern end of San Clemente Island,
	just after midnight Sunday morning.  The felt quake was a M2.6 on 
	Saturday night near Yucca Valley, a town which specializes in 
	the feeling of very small earthquakes.
                Table 1 lists the quakes this week that were M2.0 or
        larger in the central part of the coverage area.  Times are local 
	times; if you want Greenwich Mean Time, add 7 hrs to the Pacific 
	Daylight Time or 8 hrs to the Pacific Standard Time listed.

	Table 1
	-------
	Date  Time      N Lat.   W Long.   Mag  
	-------------------------------------------------------------
         3/27  2:36 am  34 21.5  116 27.9  2.1  16 mi. N of Yucca Valley
         3/27  5:44 am  36  5.3  117 39.9  2.0  16 mi. E of Coso Junction
         3/27  6:40 am  36  3.8  117 38.4  2.6  	"
         3/27 12:56 pm  34 25.0  117  2.7  2.2  5 mi. WSW of Lucerne 
						Valley
         3/27  3:39 pm  35 14.7  119 25.6  2.2  7 mi. N of Taft
         3/28  1:16 am  33 57.8  116 18.9  2.1  12 mi. S of Joshua Tree
         3/28 10:29 am  36  5.7  117 39.8  2.3  16 mi. E of Coso Junction
         3/28 12:28 pm  35 34.8  116 37.4  2.1  21 mi. NE of Goldstone 
						Lake
         3/28  1:55 pm  33  9.2  116  0.6  2.1  7 mi. E of Ocotillo 
						Wells
         3/29  7:20 pm  36  5.6  117 39.7  2.4  16 mi. E of Coso Junction
         3/29  7:44 pm  34  9.4  116 25.4  2.6  2 mi. NNE of Yucca Valley
						FELT
         3/29 11:50 pm  33 59.5  116 16.2  2.5  10 mi. SSE of Joshua Tree
         3/30 12:24 am  33  8.6  118 40.4  3.4  8 mi. NNW of San Clemente 
						Is. (NW tip)     
         3/30  2:14 am  32 10.6  116  5.6  2.1  39 mi. S of Ocotillo
         3/30  5:49 am  34 58.5  116 48.9  2.2  13 mi. ENE of Barstow
         3/30 11:51 am  33 25.6  116 27.5  2.1  12 mi. NNW of Borrego 
						Springs
         3/30 12:15 pm  34 14.2  117  3.3  2.3  3 mi. NE of Running 
						Springs
         3/30  5:11 pm  33  6.1  117 56.3  2.4  28 mi. SSW of Dana Point
         3/30 11:22 pm  33 29.8  116 30.4  2.6  10 mi. ESE of Anza
         3/30 11:23 pm  33 30.1  116 30.1  2.2  	"
         3/31  6:29 am  34 58.4  116 49.3  2.1  12 mi. ENE of Barstow
         3/31 10:25 am  36  5.0  117 40.0  2.3  15 mi. E of Coso Junction
         3/31  7:56 pm  35  2.7  116 57.5  2.0  11 mi. NNE of Barstow
         3/31 10:27 pm  34 25.7  119 28.7  2.0  3 mi. NE of Carpinteria
         4/1   4:57 am  34 58.3  116 49.5  2.4  12 mi. ENE of Barstow
         4/1  10:03 am  33  2.3  116 30.1  2.9  6 mi. ESE of Julian
         4/2   2:53 am  33 30.8  116 28.2  2.3  11 mi. ESE of Anza
         4/2   1:07 pm  35 38.5  117 30.1  2.6  9 mi. E of Ridgecrest
         4/2   2:47 pm  32 11.8  115 47.4  2.8  36 mi. SSW of Calexico
	-------------------------------------------------------------