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
August 27 - September 3, 1997

 Stephen R. Walter
U.S. Geological Survey
345 Middlefield Rd.  MS-977, Menlo Park, CA  94025

     

San Francisco Bay Area        
             
    During the eight-day period ending at midnight on Wednesday,
September 3, 1997 the U.S. Geological Survey office in Menlo Park
recorded 37 earthquakes of magnitude one (M1) and greater within
the San Francisco Bay area shown in Figure 1. Only two were as
large as M2.0.  This total compares to 21 earthquakes during the
prior six-day period (August 21 - 26), five of which were as large
as M2.
   The only activity of note in the Bay Area was a small cluster
of earthquakes about four miles northeast of San Leandro (#1/1). 
The activity occurred east of the Hayward fault over a four-day
period.  It consisted of eight earthquakes larger than M1.0.  Only
one was larger than M2.0, a M2.9 late Saturday afternoon that was
felt in the local area.
  The only other earthquake as large as M2 was a M2.3 early
Wednesday afternoon on the Loma Prieta segment of the San Andreas
fault about seven miles southeast of Los Gatos (#2/1).
   
Northern & Central California
	
  The week's largest earthquake occurred in northwestern Nevada
about 12 miles northwest of Andy's Place (#4/2).  The next largest
quake also occurred outside the state boundaries:  a M3.1 last
Friday evening on the Mendocino transform fault about 110 miles
west of Petrolia (#5/2).  Other events in the Cape Mendocino area
included five M2 earthquakes, the largest a M2.5 that occurred
last Saturday morning about three miles southwest of Petrolia
(#3/2).  Other earthquakes in northern California included a M2.0
last Thursday evening about seven miles north of Redding (#2/2)
and a M2.7 Sunday night about nine miles southwest of Cottonwood
(#7/2).  Coincident with the Cottonwood earthquake was a M2.3
along the coast about 15 miles northeast of Point Arena (#6/2).  
   The week began and ended with M2 events on the San Andreas
north of the Pinnacles National Monument (#1/2). To the northeast
of these events a trio of M2's occurred within about a one hour
period on Monday morning (#8/2).
  Activity in the Sierra Nevada range was limited to a M2.4 in the
southern range about 13 miles northeast of Lake Isabella, a M2.3
on the state border east of Mono Lake, and a M2.4 in the northern
range about 19 miles southwest of Truckee (#9/2).    

Long Valley Caldera

    Only one earthquake as large as M2 occurred within the caldera
during the week:  a M2.0 that occurred south of the airport early
Saturday morning (#1/3). 
    South of the caldera a four M2 events occurred south and east
of Mt. Morrison (#2,#3,#4/3).  

USA Seismicity (August 25 - September 4)
  
   Montana appeared to be the seismic hot spot during the past
week with four M3 earthquakes occurring along its western and
southern borders.  First was a M3.4 early Friday morning in the
northwest corner of the state that was felt in the town of Troy
(#1/4).  An hour later a M3.7 occurred along the southern
Montana/Idaho border (#2/4).  On Saturday a M3.7 occurred in the
Hebgen Lake area (#3/4) and on sunday a M3.4 occurred just across
the border in the Yellowstone area (#5/4).    

The Planet Earth  (August 25 - September 4)

   The largest earthquake on the planet was a M6.8 near the north
coast of Papua New Guinea (#2/5).  Slightly smaller was a M6.4
beneath western Colombia that was felt throughout much of the
country, most strongly in the cities of Armenia, Bogota, Cali,
Medellin, and Manizales (#3/5).  Other large earthquakes recorded
included a M6.3 in the Tonga Islands area (#1/5), a M6.0 on the
Pacific-Antarctic ridge (#4/5), and a M6.1 south of the Fiji
Islands (#5/5). 

Table 1. Northern & Central California Seismicity (M>1.0)

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ LOC   PREF
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG 

97 AUG 27  741 45.74 36 53.91 121 28.35  7.36 43   .13  .2  .4 BUS   1.4D
97 AUG 27  749 13.36 38 48.74 122 47.62  1.47 19   .02  .1  .2 GEY   1.8D
97 AUG 27  751 41.43 39 26.42 123  6.77  3.55 14 1 .07  .3 2.8 BAR   1.5D
97 AUG 27 1148  3.56 37 35.10 118 49.02  7.25 33 2 .06  .2  .4 MOR   1.8D
97 AUG 27 1214 35.64 36 34.06 121  9.41  3.62 45 1 .05  .1  .3 PIN   2.0D

97 AUG 27 1300 22.36 37 33.65 118 27.42  9.42  8   .03  .6 1.2 CHV   1.6D
97 AUG 27 1310 10.15 37 31.81 118 59.14  5.58 10 1 .03 1.3 3.6 SIL   1.0D
97 AUG 27 1525  6.35 37 38.83 118 50.41  7.97  8   .01 1.1 2.8 HCF   1.0D
97 AUG 27 1641 28.45 37 39.01 118 56.26  6.55 19   .05  .4  .5 SMO   1.5D
97 AUG 27 1752 41.99 37 44.12 122  5.33  8.43 31 5 .05  .2  .2 HAY   1.3D

97 AUG 27 1859  8.31 38 48.51 122 49.04  1.82  7   .01  .3  .5 GEY   1.2D
97 AUG 27 1916 46.38 36 14.30 121 18.94  8.68 27   .03  .4 1.5 SAL   1.8D
97 AUG 27 1959 24.38 37 33.35 118 48.23  2.30 23 1 .04  .2  .8 MOR   1.8D
97 AUG 27 2014 40.42 38 49.91 122 46.70  2.15  8   .02  .4  .7 GEY   1.3D
97 AUG 27 2029 17.27 38 50.69 122 47.94  1.42  7   .02  .3 1.0 GEY   1.0D

97 AUG 27 2149 11.85 38 47.83 122 48.85  4.66 20 1 .02  .2  .4 GEY   1.7D
97 AUG 28    0 19.90 37 29.94 122 26.23  6.06  7   .02  .5  .6 SFP   1.3D
97 AUG 28   12 33.36 37 44.16 122  5.47  8.70 51 3 .07  .1  .2 HAY   1.6D
97 AUG 28  153 21.24 37 44.08 122  5.20  8.51 38 1 .05  .2  .2 HAY   1.6D
97 AUG 28  212 57.64 37 44.06 122  5.25  8.39 39 4 .06  .2  .2 HAY   1.4D

97 AUG 28  245 10.90 36 46.86 121 28.24  7.81 11   .03  .4  .7 SJB   1.1D
97 AUG 28  347 45.92 36 33.83 121  8.79  8.87 11   .07  .4  .9 PIN   1.2D
97 AUG 28  446 16.07 38 45.37 122 42.70  2.38  9   .02  .3  .4 GEY   1.6D
97 AUG 28  707 26.51 38 46.53 122 43.19  2.73 36 1 .07  .1  .3 GEY   2.4D
97 AUG 28  714 15.50 38 46.31 122 43.94  2.13 14   .04  .2  .3 GEY   1.7D

97 AUG 28  814 39.21 37 42.23 122  0.12 11.43  9 1 .02  .5  .8 DAN   1.1D
97 AUG 28  815 52.86 37 33.04 118 49.63  4.49 20   .04  .2  .6 MOR   1.5D
97 AUG 28  827 13.47 36 57.79 121 35.46  5.74 42   .08  .1  .3 SAR   1.5D
97 AUG 28  959 29.36 36 58.14 121 27.52  0.15 14   .08  .2 3.3 CYS # 1.1D
97 AUG 28 1031  0.82 37 10.81 121 58.42  9.58  8   .09 1.0 1.9 LOM   1.0D

97 AUG 28 1057 22.90 38 58.80 122 50.47  3.26 10   .03  .3 1.1 BAR   1.6D
97 AUG 28 1208 19.05 37  9.53 121 33.10  6.06 35   .05  .2  .3 CYN   1.4D
97 AUG 28 1302 19.78 38 48.54 122 48.96  3.83  7   .01  .3  .8 GEY   1.1D
97 AUG 28 1707 36.55 37 35.98 118 48.94  6.85 31 2 .05  .2  .3 MOR   1.6D
97 AUG 28 1743 20.44 37 31.14 118 53.21  4.37 11   .05  .3  .4 MOR   1.0D

97 AUG 28 1812 10.92 37 40.33 118 50.16  3.08 18   .04  .2  .4 HCF   1.5D
97 AUG 28 1930 28.33 37 44.17 122  5.13  8.52 15   .03  .2  .3 HAY   1.3D
97 AUG 28 2011  8.44 37 36.79 118 59.11  5.19 10   .02  .6  .9 MAM   1.1D
97 AUG 29  428 54.68 40 40.96 122 24.84 24.73  7   .05  .7 1.9 SHA   2.0D
97 AUG 29  503 49.02 38 45.04 122 42.80  2.68 14   .02  .3  .4 NAP   1.4D

97 AUG 29  714 11.97 38 45.54 122 42.98  2.40 18   .04  .2  .4 GEY   1.8D
97 AUG 29  927  4.26 40 25.00 124 40.98 24.04 12   .05 1.9 1.1 MEN   2.0D
97 AUG 29  931 18.05 38 47.61 122 47.99  1.63  7   .02  .5  .3 GEY   1.1D
97 AUG 29  950 39.19 38 49.68 122 48.28  4.32 28 1 .05  .2  .4 GEY   1.9D
97 AUG 29 1147  2.01 40 17.33 124 19.51  9.68 14   .13  .7  .3 MEN   2.5D

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ LOC   PREF
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG 

97 AUG 29 1200  1.92 37 43.97 122  4.96  8.22 15 4 .04  .5  .6 HAY   1.2D
97 AUG 29 1216  8.47 39 16.07 123 12.42  7.22 12   .04  .4 1.4 MAA   1.6D
97 AUG 29 1219 43.30 36 59.32 121 38.78  3.75 27 1 .08  .2  .7 SAR   1.2D
97 AUG 29 1231 21.50 39  9.39 123  9.76  6.69  7 1 .01  .4 1.1 MAA   1.3D
97 AUG 29 1406 28.70 37 38.49 118 57.08  6.63 14   .04  .3  .7 SMO   1.3D

97 AUG 29 1548  5.65 41 56.59 119 30.82  9.58 35 5 .38 1.9 1.3 NEV   4.0D
97 AUG 29 1619  2.05 37 34.94 118 51.07  8.21 10 1 .02  .7 1.0 MOR   1.0D
97 AUG 29 1839 36.81 37 38.55 118 57.23  6.75 16 2 .03  .3  .6 SMO   1.0D
97 AUG 29 2212 22.91 37 39.37 118 51.42  5.37  7 1 .02 1.1 1.7 DOM   1.0D
97 AUG 30  119 36.95 37 40.64 118 54.02  4.96 10 1 .02  .6 1.3 DOM   1.1D

97 AUG 30  126 58.79 37 40.57 118 54.12  5.30 16   .04  .4  .6 DOM   1.2D
97 AUG 30  424  0.31 38 47.35 122 27.76  7.56 13   .08  .4  .4 GVL   1.5D
97 AUG 30  457 20.05 40 26.14 126 19.90  3.13 50   .22 7.620.0 PON - 3.1D
97 AUG 30  826 19.81 38 48.33 122 47.52  0.77  9   .06  .3  .6 GEY   1.6D
97 AUG 30 1031 58.43 37 37.35 118 51.76  8.29 22   .05  .3  .3 SMO   1.9D

97 AUG 30 1137 18.97 37 37.11 118 51.82  9.25 13 1 .04  .5  .8 SMO   1.1D
97 AUG 30 1143 28.88 37 37.27 118 51.89  8.67 29   .07  .3  .4 SMO   2.0D
97 AUG 30 1211  2.60 37 37.17 118 51.91  9.20 25 2 .06  .3  .4 SMO   1.1D
97 AUG 30 1211 18.15 37 37.27 118 51.71  9.49 24 1 .06  .3  .4 SMO   1.1D
97 AUG 30 1351 18.17 35 43.49 118 17.44 15.72 12   .03  .3  .6 WWF   2.3D

97 AUG 30 1746 26.13 37 40.39 118 52.17  1.65  7   .02 1.0  .4 DOM   1.0D
97 AUG 30 1800 51.25 37 21.20 121 43.21  5.79 64 2 .04  .1  .2 ALU   1.8D
97 AUG 30 1910 51.18 37 37.14 118 55.59  4.93 18 1 .06  .2  .6 SHE   1.4D
97 AUG 30 2000  2.40 37 36.20 118 55.38  4.17 23 1 .06  .2  .3 SHE   1.5D
97 AUG 30 2006  4.46 37 31.89 118 49.60  7.50  7   .02  .9 1.4 MOR   1.0D

97 AUG 30 2014 32.20 36 48.42 121 19.27  8.75 15   .02  .3  .5 PAI   1.1D
97 AUG 30 2031 45.35 36 46.45 121 21.29 12.90 33   .07  .2  .3 HOL   1.3D
97 AUG 30 2307 22.97 36 56.42 121 40.87 10.25 60   .07  .1  .3 SJB   1.9D
97 AUG 30 2335  7.80 36 42.54 121 20.60  3.65 45 1 .06  .1  .4 STN   1.9D
97 AUG 31   16 25.11 38 49.01 122 48.54  4.21  7   .01  .4  .5 GEY    .9D

97 AUG 31   24 13.99 37 44.16 122  5.40  9.43 85 4 .08  .1  .3 HAY   3.0D
97 AUG 31   29 35.67 37 44.10 122  5.37  8.53 37 3 .06  .1  .2 HAY   1.6D
97 AUG 31  355 59.22 37 55.83 122  2.04  8.83 21 2 .12  .4  .6 CON   1.3D
97 AUG 31  424 36.16 38 49.09 122 47.65  0.96  7   .03  .3  .4 GEY   1.2D
97 AUG 31  456 22.96 38 47.54 122 46.23  5.44 38   .06  .1  .3 GEY   2.2D

97 AUG 31  622 11.31 40 45.76 124 10.19  8.56 14   .05  .3  .9 EUR   1.8D
97 AUG 31  729 13.55 40 45.76 124 10.32  9.84 15   .04  .3  .4 EUR   2.0D
97 AUG 31  755 15.92 36 51.17 121  2.37  5.19 34   .04  .2 1.3 ORT   1.6D
97 AUG 31  915 11.48 38 49.37 122 48.50  4.31 10   .02  .3  .7 GEY   1.4D
97 AUG 31 1127 22.65 39 22.10 122 54.52  6.19 17 1 .03  .2 1.0 BAR   1.6D

97 AUG 31 1222 53.27 36 56.02 121 25.89  3.66 66 2 .06  .1  .4 HOL   1.8D
97 AUG 31 1234 24.41 38 49.11 122 47.88  0.03  8   .04  .4 2.6 GEY # 1.2D
97 AUG 31 1718 45.07 38 49.82 122 51.78  0.80  8   .05  .3 1.2 GEY   1.1D
97 AUG 31 1720 14.33 37 31.27 118 48.72  5.30  7   .01  .4  .8 MOR   1.0D
97 AUG 31 1835 50.93 36 41.62 121 19.55  3.32 18   .04  .2  .4 STN   1.2D

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ LOC   PREF
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG 

97 AUG 31 1856 56.81 37 32.68 118 52.41  9.46 32   .07  .3  .5 MOR   2.2D
97 AUG 31 1937 47.48 37 32.60 118 52.40  9.58 33 1 .05  .2  .4 MOR   1.9D
97 AUG 31 1952  6.08 37 32.66 118 51.84 11.19 14   .03  .4 1.2 MOR   1.3D
97 AUG 31 2110 52.60 37 41.15 122 25.22 10.95 23 2 .05  .2  .4 SFP   1.5D
97 AUG 31 2146  8.07 36 34.36 121 10.30  6.90 23 1 .03  .2  .4 PIN   1.3D

97 AUG 31 2228 26.84 37 30.76 118 52.68  4.98 10 1 .02  .6 1.4 MOR   1.0D
97 AUG 31 2234 50.90 38 48.59 122 49.43  1.10 35   .04  .1  .3 GEY   2.3D
97 AUG 31 2240 47.19 40 28.43 124 26.82 18.09 15 2 .05 1.0  .3 MEN   2.0D
97 AUG 31 2307 15.06 36 33.97 121  8.05  9.75 27 1 .04  .2  .4 PIN   1.6D
97 AUG 31 2318 10.54 37 36.32 118 51.19 10.03 20 1 .04  .4  .3 SMO   1.0D

97 SEP  1    5 59.33 38 48.40 122 46.59  1.24 10   .05  .2 1.2 GEY   1.6D
97 SEP  1   18 34.99 37 34.19 118 49.93  4.99 25   .05  .2  .4 MOR   1.7D
97 SEP  1  113 34.11 38 49.61 122 46.76  2.04  7   .04  .4  .7 GEY   1.2D
97 SEP  1  206 38.86 37 40.27 118 58.31  3.91 20   .08  .3  .5 WMO   1.4D
97 SEP  1  356  0.44 38 46.81 122 46.15  1.47 12   .02  .2  .7 GEY   1.6D

97 SEP  1  425 12.42 36 16.40 120 50.33  8.54 15 1 .03  .3  .6 BIT   1.3D
97 SEP  1  451 12.04 37 34.07 118 41.83  2.24  8   .20 2.117.9 CAS - 1.1D
97 SEP  1  454 54.91 37 39.69 118 50.76  5.66 18   .07  .3  .5 HCF   1.5D
97 SEP  1  459 13.36 37 39.64 118 50.75  5.57 18   .07  .3  .4 HCF   1.4D
97 SEP  1  501 20.07 36 52.40 121 20.29  4.85 30 1 .05  .2  .4 QUI   1.3D

97 SEP  1  527 58.32 37 40.09 118 50.90  4.19  8   .01  .6  .8 DOM   1.0D
97 SEP  1  538 39.39 37 32.60 118 52.35 10.03 15   .05  .3  .7 MOR   1.3D
97 SEP  1  603 31.62 40 51.36 123 44.99 25.20 13   .05  .4  .5 EUR   1.9D
97 SEP  1  615 41.71 39  5.43 123 32.69  3.42 24 2 .09  .3  .8 PAR   2.3D
97 SEP  1  615 53.02 40 17.07 122 24.17 29.93 19   .14  .5 1.0 KLA   2.7D

97 SEP  1  643 47.23 36  0.33 120 52.67  8.73 15   .02  .3  .4 ROB   1.3D
97 SEP  1  716 57.95 38 47.71 122 44.69  2.19  7   .01  .3  .8 GEY   1.2D
97 SEP  1  753 25.66 38 47.69 122 48.67  4.47 19 1 .03  .2  .4 GEY   1.6D
97 SEP  1  907  0.81 36  0.41 120 52.74  9.43 10   .04  .4 1.4 ROB   1.0D
97 SEP  1 1101  5.92 39 10.84 123 27.73  5.34 12 1 .08  .3 1.4 PAR   1.5D

97 SEP  1 1149 30.18 37 34.12 118 49.98  5.25 30   .06  .2  .4 MOR   2.1D
97 SEP  1 1152 28.92 37 34.19 118 49.97  5.59 33   .07  .2  .4 MOR   2.4D
97 SEP  1 1225 21.19 38 49.21 122 46.09  1.85  7   .02  .4  .7 GEY   1.2D
97 SEP  1 1239 28.63 40 18.38 124 23.01  8.30  9   .02 1.3  .4 MEN   1.4D
97 SEP  1 1239 43.21 38 48.00 122 48.94  1.53 10   .01  .3  .4 GEY   1.4D

97 SEP  1 1339 34.60 37 39.66 118 50.63  6.32 13   .05  .5  .6 HCF   1.3D
97 SEP  1 1406 17.55 37 39.54 118 51.03  6.23 27 3 .06  .3  .4 HCF   1.5D
97 SEP  1 1434  6.69 36 42.51 121  1.71  1.63 68 2 .48  .4 1.9 ORT # 2.5D
97 SEP  1 1434 16.09 37 39.88 118 50.84  4.68 10   .03  .6  .8 DOM   1.1D
97 SEP  1 1442 18.85 36 43.74 121  0.51  0.63 25   .36  .7 4.9 ORT   1.5D

97 SEP  1 1505 14.50 38 47.00 122 56.20  3.30 15   .04  .3 1.4 GEY   1.3D
97 SEP  1 1530 24.41 36 42.92 121  0.52  7.54 64 2 .19  .2 1.0 ORT   2.8D
97 SEP  1 1540 53.55 36 42.69 121  0.84  0.71 43   .27  .4 2.3 ORT   2.1D
97 SEP  1 1550 43.09 36 42.96 121  1.01  0.48  9   .28 1.2 6.0 ORT    .9D
97 SEP  1 1603 16.60 37 28.41 118 49.36  0.60 14   .04  .3  .3 MOR   1.3D

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ LOC   PREF
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG 

97 SEP  1 1607 21.40 36 59.19 121 38.77  4.29 18   .05  .2  .6 SAR   1.0D
97 SEP  1 1622 51.44 37 32.32 118 51.47  8.21 20 1 .04  .3  .4 MOR   1.3D
97 SEP  1 1712 44.80 38 50.58 122 47.71  0.03  7   .07  .3 1.7 GEY # 1.4D
97 SEP  1 1852 40.56 37 39.58 118 49.31  5.02 15 1 .06  .4  .6 HCF   1.3D
97 SEP  1 2013 19.25 38 51.42 122 51.49  1.08 13   .05  .2  .5 GEY   1.4D

97 SEP  1 2021 27.95 37 39.21 118 54.82 11.66 15   .05  .6  .8 DOM   1.0D
97 SEP  1 2150 27.68 37 39.73 118 50.91  5.25 11 1 .05  .6  .7 HCF   1.2D
97 SEP  1 2157 35.29 36 18.34 120 53.08  5.00 17   .07  .2  .5 BIT   1.6D
97 SEP  1 2315 56.78 40 13.53 124 12.04 12.76 11   .11  .9  .6 MEN   2.1D
97 SEP  2   54 59.48 38 49.27 122 48.12  3.69  8   .02  .4  .6 GEY   1.1D

97 SEP  2  127 39.19 38 49.28 122 47.58  3.98  7   .01  .3  .7 GEY   1.3D
97 SEP  2  238 11.60 37 36.15 118 54.71  5.46 21 1 .05  .3  .5 SHE   1.3D
97 SEP  2  316 38.15 37 17.58 118 20.34 18.57 10   .24 1.5 3.6 OWV   1.8D
97 SEP  2  341 28.96 37 38.03 118 54.15  4.25  9   .02  .4  .7 SMO   1.0D
97 SEP  2  411  3.24 37  7.08 121 53.71 10.63 12   .47 1.7 4.8 LOM   1.5D

97 SEP  2  414  3.18 37 50.10 121 58.34  6.54 26 4 .04  .2  .3 CON   1.6D
97 SEP  2  430 54.05 37 37.96 118 54.09  5.03 17 2 .04  .3  .5 SMO   1.1D
97 SEP  2  525 13.51 38 48.13 122 48.91  3.92  7   .01  .4  .7 GEY   1.1D
97 SEP  2  530 23.43 36 42.30 121 20.56  4.37 14 1 .02  .2  .5 STN   1.0D
97 SEP  2  555  3.78 40 22.08 121 35.89 10.59  8 1 .05  .4 1.9 SHA   1.8D

97 SEP  2 1108 17.84 36  7.75 120 26.18  5.00 12   .41 1.3 3.6 COA   1.3D
97 SEP  2 1111 30.06 38 49.69 122 47.56  3.77  8   .02  .3  .7 GEY   1.2D
97 SEP  2 1511 49.53 40 18.30 124 24.35  9.57 10   .04  .9  .4 MEN   1.9D
97 SEP  2 1622 49.45 37  7.20 121 31.38  9.48 11   .05  .4  .7 CYN   1.4D
97 SEP  2 1858  3.08 38 51.11 122 47.35  0.02  9   .09  .3 1.9 GEY # 1.3D

97 SEP  2 2046 36.65 37 38.22 118 57.04  8.27 19   .05  .3  .6 SMO   1.5D
97 SEP  2 2055 22.73 37 35.47 118 48.79  6.76 11   .02 1.5  .6 MOR   1.3D
97 SEP  2 2058 33.48 37 33.00 118 49.70  5.08 28   .05  .2  .5 MOR   2.7D
97 SEP  2 2103  3.05 37 33.06 118 49.56  4.16 16   .04  .2  .6 MOR   1.5D
97 SEP  2 2105 20.62 38  1.72 118 34.39  5.00 17   .08  .910.6 MOL - 2.3D

97 SEP  2 2229 56.88 37 33.05 118 49.55  5.60 15   .04  .3  .5 MOR   1.4D
97 SEP  2 2230 39.58 36 58.12 121 35.78  5.15 22   .08  .2  .3 SAR   1.2D
97 SEP  2 2324 26.72 37 35.25 118 48.64  5.01 13   .07  .3  .5 MOR   1.1D
97 SEP  2 2332 42.99 37 35.71 118 48.72  7.07 14   .05  .3 1.0 MOR   1.3D
97 SEP  3    0 17.58 37 30.24 122 24.82  1.07 18   .03  .2  .5 SFP   1.5D

97 SEP  3  134 54.50 39 10.40 120 28.01 22.95 12   .06 2.8 4.8 WAK   2.4D
97 SEP  3  529 52.79 36 42.74 121  0.73  0.83 12   .35 2.716.7 ORT # 1.0D
97 SEP  3  543 13.16 38 50.44 122 46.37  2.15 17   .04  .2  .6 GEY   1.8D
97 SEP  3  544 21.57 37 32.80 118 49.73  5.12 16   .05  .3  .7 MOR   1.4D
97 SEP  3  544 21.56 37 32.78 118 49.79  5.70 14   .03  .3  .9 MOR   1.4D

97 SEP  3  720 29.92 37 40.04 118 50.49  6.30 18 1 .04  .5  .5 HCF   1.3D
97 SEP  3  906 28.90 37 30.18 118 50.45 13.11 24   .05  .3  .6 MOR   1.4D
97 SEP  3 1213 13.76 36 45.07 121 28.07 10.34 41 2 .10  .2  .4 SJB   1.2D
97 SEP  3 1224 20.92 37 37.78 118 51.93  5.38 26   .07  .3  .4 SMO   1.9D
97 SEP  3 1254 45.18 37 32.94 118 49.63  4.13  9   .03  .4  .9 MOR   1.3D

--ORIGIN TIME (UT)-- -LAT N-- --LON W-- DEPTH  N N RMS ERH ERZ LOC   PREF
YR MON DA HRMN  SEC  DEG MIN  DEG  MIN    KM  RD S SEC  KM  KM REMKS MAG 

97 SEP  3 1339 47.54 38 48.03 122 47.97  3.79  8   .01  .3  .7 GEY   1.5D
97 SEP  3 1414 46.11 37 54.38 121 59.74  9.72 20 1 .07  .3  .5 CON   1.4D
97 SEP  3 1506 40.86 37 34.52 118 51.45  8.14 16   .05  .3  .8 MOR   1.5D
97 SEP  3 1859 43.72 38 47.82 122 46.24  0.02 10   .03  .3 1.0 GEY # 2.3D
97 SEP  3 1900 30.83 38 48.04 122 46.37  1.80  7   .01  .3  .8 GEY   1.3D

97 SEP  3 2005 20.39 37  8.40 121 54.75  8.17 39   .10  .2  .4 LOM   2.3D
97 SEP  3 2021 20.82 37 33.05 118 49.62  2.24  7   .01  .3 2.3 MOR    .9D
97 SEP  3 2046 18.40 37 34.64 118 50.97  7.35  8   .05  .6 1.2 MOR   1.1D
97 SEP  3 2112 55.86 36  3.80 120 36.57  5.84 15   .05  .3  .4 SLA   1.8D
97 SEP  3 2124 37.00 36 35.42 121  8.56 10.01 37   .07  .2  .4 BVL   2.2D

97 SEP  3 2125  1.45 37 28.50 118 49.53  2.50  7   .04  .9 7.3 MOR - 1.0D
97 SEP  4    0 14.19 38 46.96 122 43.67  2.45  9   .03  .3  .5 GEY   1.5D
97 SEP  4  259 11.94 37 40.16 118 51.39  2.16  7   .02  .5 1.5 DOM   1.3D
97 SEP  4  410 13.94 38 49.71 122 48.49  4.64 20   .04  .2  .5 GEY   1.9D
97 SEP  4  614 41.26 37 38.73 119  1.58  5.88  7   .03  .6 1.8 MAM   1.1D

   
TABLE 2.
Data from National Earthquake Information Center (NEIC)

3Se
UTC TIME    LAT     LONG    DEP GS MAGS  SD STA  REGION AND COMMENTS
HRMNSEC                         MB  Msz     USED

AUG 25
011039.5   5.707N 126.275E 133D 5.2     1.1  92 MINDANAO, PHILIPPINE ISLANDS
024806.3  39.205N  44.025E  33N 4.4 3.3 1.0  67 ARMENIA-AZERBAIJAN-IRAN BORD REG
030722.5* 44.483N 147.932E  33N 4.0     0.6  11 KURIL ISLANDS
033424.7  19.627S  69.000W 107D 4.8     0.9 112 NORTHERN CHILE. Felt (III) at
                                                Iquique and Arica, Chile.
040922.6* 11.501N  87.974W  33N 4.4     1.0  34 NEAR COAST OF NICARAGUA
051520.9* 16.068N  98.062W  33N 4.5     1.1  40 NEAR COAST OF GUERRERO, MEXICO
055001.3? 35.25 N  28.06 E  10G 3.6 3.1 0.6  13 EASTERN MEDITERRANEAN SEA
062248.1  38.003N   4.444W  10G         0.5  18 SPAIN. mbLg 3.9 (MDD). Felt
063752.2  21.522N 120.304E  33N 4.8     0.9  30 TAIWAN REGION
065744.7  21.552N 120.402E  33N 5.2 4.6 0.8  81 TAIWAN REGION
074041.6* 38.950N  22.339E  10G 3.5     0.7  11 GREECE
085948.3? 21.53 S 112.94 W  10G 4.1     1.1  10 SOUTHERN EAST PACIFIC RISE
160900.1  47.643N 146.934E 400G 4.2     1.0  20 NORTHWEST OF KURIL ISLANDS
174214.6* 27.666S  74.390E  10G 4.3     0.9   9 MID-INDIAN RIDGE
182241.1?  6.96 S  67.86 E  10G 4.5     1.4  11 CARLSBERG RIDGE
192313.0*  4.295S 127.947E  33N 4.0     1.5  12 BANDA SEA
195056.8* 21.604S 174.655W  33N 4.6     0.8  16 TONGA ISLANDS
212407.9   1.940S  99.950E  33N 5.1 4.7 0.9  67 SOUTHERN SUMATERA, INDONESIA.
        Felt at Padang and Padangpanjang.

AUG 26
004449.9  36.519N  53.036E  33N 4.5 3.4 0.8  49 NORTHERN IRAN. Felt at Neka,
                                                Qaemshahr and Sari.
013749.2  51.415N 177.619W  51* 4.4     0.9  53 ANDREANOF ISLANDS, ALEUTIAN IS.
025334.2  52.987N 159.880E  33N 5.1     0.7 133 OFF EAST COAST OF KAMCHATKA
032741.8  58.288S  25.315W  33N 5.4 4.7 0.6  23 SOUTH SANDWICH ISLANDS REGION
075308.5  18.570N 145.174E 300G 4.5     1.1  86 MARIANA ISLANDS
082711.8*  7.222S  21.853W  10G 4.7     0.8  17 SOUTH ATLANTIC OCEAN
084327.1   7.013S  21.913W  10G 5.4 4.7 0.9 122 SOUTH ATLANTIC OCEAN
085827.2* 33.624S 179.265W  33N 4.8     1.6  20 SOUTH OF KERMADEC ISLANDS
100054.5   0.861N 124.631E 165* 4.9     0.9  37 MINAHASSA PENINSULA, SULAWESI
100811.8* 11.859S 116.437E  33N 4.3     1.5  14 SOUTH OF SUMBAWA, INDONESIA
105836.1? 32.80 S  69.28 W   5G         0.6   9 MENDOZA PROV., ARGENTINA. MD 4.2
131726.2   6.421N  94.531E 113D 4.9     1.0  36 NICOBAR ISLANDS, INDIA
131747.8  21.156S  68.161W 134D 4.9     1.0  37 CHILE-BOLIVIA BORDER REGION
134306.7* 58.793N 152.997W  33N         1.2  13 KODIAK ISLAND REGION. ML 3.4
135457.1* 14.134N  92.201W  33N 4.4     1.0  39 NEAR COAST OF CHIAPAS, MEXICO
142700.6   5.604S  81.277W  33N 4.9 4.5 1.0  44 NEAR COAST OF NORTHERN PERU
151855.5* 52.130N 173.729W  33N 3.7     0.7   9 ANDREANOF ISLANDS, ALEUTIAN IS.
152209.4  25.444S 178.273E 610D 5.4     0.8 138 SOUTH OF FIJI ISLANDS. Mw 5.7
154000.9& 60.470N 151.780W  63              122 KENAI PENINSULA, ALASKA. ML 3.9
160212.2*  2.939S 129.776E  33N 4.2     1.6  11 SERAM, INDONESIA
164647.0% 33.578S  71.776W  40G         0.4  10 NEAR COAST-CENTRAL CHILE. MD 3.8
183708.0* 13.906S 166.950E 140G 4.5     0.3  10 VANUATU ISLANDS
213213.1  27.414N 130.367E  33N 5.0 4.4 1.0  36 RYUKYU ISLANDS
223823.4? 13.01 S 166.39 E  33N 4.8     1.0  11 VANUATU ISLANDS
224848.8? 10.32 S 161.32 E 100G 4.6     1.0  10 SOLOMON ISLANDS

AUG 27
071509.8?  8.65 S 127.96 E 160G 4.6     1.3   9 TIMOR REGION, INDONESIA
095545.8   7.369S 130.637E  33N 5.3     0.7  37 TANIMBAR ISLANDS REG., INDONESIA
104826.9  28.620S 178.839W 380G 4.0     0.7  10 KERMADEC ISLANDS REGION
114316.6?  4.26 S 152.68 E  33N 4.7     0.8  14 NEW BRITAIN REGION, P.N.G.
134252.8   6.019S 148.562E  33N 5.8 5.7 1.0  54 NEW BRITAIN REGION, P.N.G. Mw 6.0
140151.0   5.477S 147.005E 200G 5.1     0.6  21 EASTERN NEW GUINEA REG., P.N.G.
143013.6  63.482N 151.318W  33N         0.9  13 CENTRAL ALASKA. ML 3.8 (PMR).
143120.7? 31.90 S  69.93 W 140G         0.3   9 SAN JUAN PROV., ARGENTINA. MD 3.2
185012.1* 38.292N  26.297W  10G 5.0 4.3 1.5  35 AZORES ISLANDS

AUG 28
111007.7  57.140N  33.907W  10G 5.4 5.2 1.0 125 NORTH ATLANTIC OCEAN
142004.0* 29.306N 141.806E  33N 4.4     0.5   8 SOUTH OF HONSHU, JAPAN
214208.2  17.276S 167.795E  33N 4.9 5.3 0.9  24 VANUATU ISLANDS

AUG 29
050558.1  21.869S  68.243W 117D 5.3     0.6  66 CHILE-BOLIVIA BORDER. Mw 5.2
        Felt (IV) at Calama, (III) at Maria Elena and Quillagua and (II) at
        San Pedro de Atacama, Chile.
065358.5  15.544S 175.477W  33N 5.7 6.3 1.2  75 TONGA ISLANDS. Mw 6.5 
081410.9   3.533S 144.236E  33N 5.9 6.8 1.0  42 NEAR N COAST-NEW GUINEA, PNG.
084253.0& 48.580N 115.880W  19                9 MONTANA. <BUT-P>. ML 3.4 (BUT).
                                                Felt at Troy.
091015.0& 44.540N 113.220W  10               17 EASTERN IDAHO. <BUT-P>. ML 3.7
103857.5* 15.921S 175.018W 256D 4.6     0.4  25 TONGA ISLANDS
112337.2* 34.936N 139.894E  33N 4.0     0.3  11 NEAR S. COAST OF HONSHU, JAPAN
112524.1? 35.14 N 140.07 E  33N 3.9     0.5  10 NEAR EAST COAST OF HONSHU, JAPAN
154809.3  41.849N 119.825W   5G         1.3  12 NEVADA. ML 3.8 (GS).
192156.6*  5.568N 126.312E  33N 5.0 4.9 1.3  14 MINDANAO, PHILIPPINE ISLANDS

AUG 30
032834.4* 14.752N 144.753E  33N 4.7 5.2 1.2  39 MARIANA ISLANDS
033612.6* 40.304N 143.606E  33N 4.6     1.4  13 OFF EAST COAST OF HONSHU, JAPAN
045448.2* 43.549N 135.568E 343D 4.2     0.7  24 NEAR SOUTHEAST COAST OF RUSSIA
045720.4* 40.362N 126.220W  10G         0.7  10 OFF COAST OF N. CALIFORNIA.  ML 3.3
064927.0*  2.867S  80.519W  33N 4.6     0.7  17 NEAR COAST OF ECUADOR
084022.9* 41.416S 174.017E  33N         0.6   9 COOK STRAIT, NEW ZEALAND. ML 4.1
        (WEL). Felt at Blenheim on the South Island.
114126.5  44.935N 111.511W   5G         0.8  30 HEBGEN LAKE REGION. ML 3.7 (GS).

AUG 31
002413.3  37.776N 122.033W  10G         0.8  10 CENTRAL CALIFORNIA. ML 3.0 (GS).
                                                Felt.
005642.4  63.431N 151.146W  10G         0.7   6 CENTRAL ALASKA. ML 3.0 (AEIC).
105954.8* 30.400S 177.916W  33N 4.8 4.4 0.5  18 KERMADEC ISLANDS, NEW ZEALAND
130124.6? 15.18 N 144.92 E  33N 4.9 4.9 0.7  21 MARIANA ISLANDS REGION
141348.8  12.674N  88.435W  70D 5.3     0.9  78 OFF COAST-CENTRAL AMERICA

SEP 01
003620.5  35.431N 118.411W   5G 4.6     0.8  33 CENTRAL CALIFORNIA. ML 3.5 (GS)>
040820.5  44.927N 110.852W   5G         1.2  12 YELLOWSTONE REGION, WYOMING. ML 3.4
074024.2  51.190N 178.286W  33N 4.7 4.4 0.9  52 ANDREANOF ISLANDS, ALEUTIAN IS.
105020.9* 19.430N  95.908W  10G 4.3     1.0  22 VERACRUZ, MEXICO. Felt at Boca
                                                del Rio and Veracruz.
123629.3   1.708S  15.562W  10G 5.0 5.3 0.9  36 NORTH OF ASCENSION ISLAND
140700.0* 53.674N 160.718E  33N 4.6     0.8  18 NEAR EAST COAST OF KAMCHATKA

SEP 02
001946.9* 41.580N 142.560E  33N 4.8 4.3 0.6  42 HOKKAIDO, JAPAN  REGION
011614.7  51.161N 176.968W  33N 4.6     0.9  30 ANDREANOF ISLANDS, ALEUTIAN IS.
105347.3  31.939S  70.973W  72D 4.6     0.7  22 CHILE-ARGENTINA BORDER.
        Felt (V) at Illapel and Los Vilos; (IV) at Cabildo, Canela, La Ligua,
        Papudo, Petorca, Salamanca and Zapallar; (III) at Chincolco, Los Andes,
        Quintero, San Felipe and Santiago; (II) at Concon, Chile.
121326.2   3.868N  75.746W 231D 6.4     0.8 125 COLOMBIA. Mw 6.8 
        Felt strongly in the areas of Armenia, Bogota, Cali, Medellin, Manizales 
        and Pereira. Felt throughout much of central Colombia. Also felt (II) at 
        Panama City and Penonome, Panama.
134735.3  34.159N 117.331W  10G         0.4  21 SOUTHERN CALIFORNIA. ML 3.1

SEP 03
062243  Q 55.1  S 128.8  W  10G     6.0 0.9  20 PACIFIC-ANTARCTIC RIDGE

SEP 04
042336  Q 26.5  S 178.2  E 620  6.1     0.9 116 SOUTH OF FIJI ISLANDS
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.