Magnitude 3.9 NORTHERN CALIFORNIA
Friday, July 20, 2007 at 17:50:20 UTC
Historic USGS Moment Tensor Solutions
Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green
The most recent (20 or less) USGS Moment Tensor Solutions are shown.
Data from the Source Parameter Database.
E P I C E N T E R | MOMENT | P R I N C I P A L A X E S |N O D A L P L A N E S |
DATE TIME (UTC) LAT LONG SRC|DEPTH VAL EX | T N P | 1 2 | % SRC
YR MO DA HR MN SEC deg deg | km Mw Nm |VAL PL AZM VAL PL AZM VAL PL AZM|STK DP SLIP STK DP SLIP| DC
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1984 04 24 21:15:19.00 37.320 -121.698 PDE| 16.0 6.5 6.9 18 |6.67 1 97 0.40 87 196 -7.06 3 7|142 87 -178 52 88 -3| 89 GS
1989 10 18 00:04:15.24 37.036 -121.883 PDE| 8.0 6.8 2.3 19 |2.28 52 108 0.09 38 286 -2.36 1 17|139 56 138 255 57 43| 92 GS
1991 08 17 19:29:40.00 40.235 -124.348 PDE| 6.0 6.3 3.3 18 |3.39 56 40 -0.09 28 184 -3.30 17 283| 48 38 141 171 68 59| 95 GS
1992 04 25 18:06: 4.21 40.368 -124.316 PDE| 6.0 7.1 5.1 19 |5.41 56 62 -0.71 19 182 -4.70 28 282| 51 25 142 177 75 70| 74 GS
1992 04 26 07:41:39.73 40.415 -124.603 PDE| | 8 80 1 170|215 83 5 124 85 173| GS
1992 04 26 11:18:25.79 40.378 -124.575 PDE| 26.0 6.7 1.2 19 |1.07 8 267 0.33 82 98 -1.40 2 357| 42 84 4 312 86 174| 53 GS
Latest USGS Fast Moment Tensor Solutions
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
