Northern California Seismicity Report for the week ending
Mar 21, 2002
This report provides a brief summary of earthquake activity recorded by
the U.S. Geological Survey Northern California Seismic Network in Menlo
Park and the University of California Berkeley Seismological
Laboratory. It is automatically generated each Wednesday shortly after
midnight, Universal time (UT). UT (ie., Greenwich Mean Time) is 8 hours
ahead of PST or 7 hours ahead of PDT.
Because it is not possible
to review all of the earthquakes before this report is generated, it
may contain errors. Please report errors or provide suggestions and comments to
ncsn@andreas.wr.usgs.gov
The report no longer includes maps showing earthquakes for the entire
US or world. Those maps are now available from the
U.S.G.S. National Earthquake Information Center.
In addition, all earthquake data can be retrieved from the
Northern California Earthquake Data Center.
Please note that some of the earthquake
data in this report have been reviewed by seismic analysts.
Consequently, the parameters that describe the hypocenter, magnitude,
origin time, and solution statistics may differ slightly from the
information contained on the real-time earthquake web page. The differences
reflect revised arrival times at seismic stations and the analysts'
decisions to include or exclude information from seismic stations.
The minimum magnitude ( M) values in the
following bullets reflect the smallest earthquake which the network can
routinely record within the region. During the previous seven-day
period ending at midnight (UT) Wednesday, our seismic networks recorded
- 17 M >2.0 earthquakes in Northern and Central California
(map) (within dashed polygon of figure).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.2, 2 miles SE of Pacifica, CA at 07:35 AM UTC Wednesday, 03 20, 2002 (11:35 PM PST Tuesday, Mar 19, 2002).
- 19 M >1.2 earthquakes in the San Francisco Bay area
(map).
The largest event to occur this week in this region was a minor earthquake of magnitude 3.2, 2 miles SE of Pacifica, CA at 07:35 AM UTC Wednesday, 03 20, 2002 (11:35 PM PST Tuesday, Mar 19, 2002).
- 9 M >1.2 earthquakes in the Long Valley region
(map).
The largest event to occur this week in this region was an earthquake of magnitude 2.4, 8 miles SW of Toms Place, CA at 09:52 AM UTC Thursday, 03 14, 2002 (01:52 AM PST Thursday, Mar 14, 2002).
The following table provides a listing of all
M
>2 earthquakes that occurred this week. An
explanation of the entries in the table is available.
---ORIGIN TIME (UT)--- -LAT N-- --LON W-- DEPTH N RMS ERH ERZ LOC PREF AZ MIN S. PAGE 1
YEAR MON DA HRMN SEC DEG MIN DEG MIN KM RD SEC KM KM REMKS MAG GAP DS PF
2002 MAR 14 0508 3.35 37 25.74 118 36.65 2.93 32 .23 .7 3.2 RVL # 2.2D 111 9 NN
2002 MAR 14 0952 33.51 37 29.56 118 48.48 8.13 33 .06 .3 .9 MOR 2.4D 123 8 NN
2002 MAR 14 1008 43.64 38 59.07 123 4.25 7.39 33 .07 .1 .4 MAA 2.4D 38 8 NN
2002 MAR 14 2353 18.12 40 50.92 123 26.79 25.44 23 .06 .2 1.1 KLA 3.1L 55 24 NN
2002 MAR 15 0630 57.80 37 27.33 118 35.84 12.63 30 .05 .2 .6 RVL 2.3D 85 4 NN
2002 MAR 15 1828 37.77 37 29.91 121 50.63 6.99 64 .08 .1 .4 MIS 2.6D 30 4 WW
2002 MAR 15 2333 49.37 37 20.16 118 33.08 11.22 30 .06 .4 .7 KAI 2.9D 150 2 NN
2002 MAR 16 1418 15.42 37 17.40 119 23.05 33.45 12 .08 .5 1.0 KAI # 2.3D 160 20 NN
2002 MAR 16 1505 14.93 38 32.82 122 45.68 7.52 40 .11 .2 .4 ROG 2.3D 32 3 WW
2002 MAR 16 1541 38.09 36 55.11 121 0.13 0.63 42 .36 1.313.8 ORT # 2.1D 105 28 WW
2002 MAR 17 0330 16.49 37 36.39 122 22.51 12.59 48 .08 .2 .4 SFP 2.3D 72 5 WW
2002 MAR 17 0709 39.11 37 0.39 121 27.60 0.12 44 .10 .2 2.3 CYS 2.2D 54 6 WW
2002 MAR 18 1730 16.73 37 36.05 122 27.89 8.47 50 .06 .2 .3 SFP 2.5D 96 4 WW
2002 MAR 18 2253 3.01 39 20.63 122 50.04 9.20 25 .13 .3 1.0 BAR 2.4D 44 19 WW
2002 MAR 19 1608 39.82 38 14.50 121 49.26 18.22 20 .26 1.2 .7 JQN 2.4D 115 10 WW
2002 MAR 20 0406 52.36 36 38.22 121 5.97 12.14 36 .11 .2 .5 BVL 2.2D 57 3 WW
2002 MAR 20 0735 12.83 37 35.61 122 27.52 7.67 70 .11 .2 .3 SFP 3.2L 100 4 WW
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