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Earthquake Hazards Program

Magnitude 6.6 SANTA CRUZ ISLANDS

Monday, August 10, 2009 at 04:06:31 UTC

Historic USGS Moment Tensor Solutions

Historic Moment Tensor Solutions World Location
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
---------------------------------------------------------------------------------------------------------------------------------------
 2007 04 21 17:20:31.93 -13.838  166.843 PDE| 32.0 5.9 9.7  17 |9.58 88  29  0.26  2 171 -9.83  1 261|352 44   92 169 46   88| 95 GS              
 2007 04 25 13:34:14.23 -14.285  166.863 PDE| 55.0 6.3 4.1  18 |3.99 63 151  0.21 20 286 -4.20 17  23|141 33  130 277 65   68| 90 GS              
 2007 06 05 09:33:42.31 -14.838  166.785 PDE| 23.0 5.6 3.5  17 |3.52 74  28  0.05 13 174 -3.57  8 266| 11 38  111 165 55   74| 97 GS              
 2007 06 22 17:32:44.74 -11.597  166.312 PDE| 35.0 5.5 2.2  17 |2.16 81 355 -0.01  8 178 -2.15  0  88|169 45   78   6 46  102| 99 GS              
 2007 07 15 09:27:34.48 -15.383  168.597 PDE| 13.0 6.0 1.3  18 |1.35 73  77 -0.02  8 193 -1.33 15 285| 25 31  105 188 61   81| 97 GS              
 2007 08 01 17:08:51.40 -15.595  167.680 PDE|120.0 7.2 7.0  19 |7.35 73  96 -0.69  2 193 -6.67 17 284| 17 28   95 192 62   88| 81 GS              
 2007 08 12 12:05:19.85 -11.378  166.273 PDE| 35.0 6.0 1.2  18 |1.17 79 347  0.12 11 169 -1.29  0  79|158 46   74 360 46  105| 81 GS              
 2007 09 02 01:05:18.15 -11.610  165.762 PDE|                  |     65  55                    25 235|145 70   90 325 20   90|    GS              
 2007 09 24 11:55: 6.26 -11.774  166.182 PDE| 20.0 5.4 1.8  17 |1.85 61  52 -0.01 16 175 -1.83 23 272| 32 26  130 169 70   73| 99 GS              
 2007 11 10 16:11:24.51 -11.547  166.279 PDE| 39.0 5.7 4.3  17 |4.24 74 329  0.22 14 176 -4.46  6  84|  7 53  108 159 40   68| 90 GS              
 2007 11 27 11:49:58.01 -10.950  162.149 PDE| 16.0 6.4 5.3  18 |5.23 52 101  0.23 27 329 -5.46 23 226|275 32   31 158 74  119| 92 GS              
 2007 12 28 04:11:19.78 -13.618  166.566 PDE| 20.0 5.5 2.2  17 |1.92 86 162  0.49  3 350 -2.42  0 260|347 45   86 173 46   94| 60 GS              
 2008 07 19 09:27: 1.46 -11.041  164.493 PDE|  3.0 6.6 8.7  18 |8.31 16 307  0.81 17 212 -9.11 65  77|203 63 -110  62 33  -56| 82 GS              
 2008 07 19 11:01:17.71 -11.066  164.616 PDE|  3.0 6.2 2.9  18 |2.47 24 301  0.75 11 206 -3.22 62  93|202 70 -102  54 23  -60| 53 GS              
 2008 08 12 05:25:57.69 -11.432  166.230 PDE| 39.0 5.9 8.3  17 |8.75 86 319 -1.04  3 148 -7.70  0  58|332 46   95 145 45   85| 76 GS              
 2008 09 04 09:37: 3.97 -12.143  167.101 PDE|253.0 5.7 4.6  17 |4.85 72  36 -0.49 14 180 -4.37  9 273| 20 37  114 171 56   73| 80 GS              
 2008 09 05 12:35:43.51 -13.273  166.966 PDE|139.0 5.6 3.1  17 |3.28 83 142 -0.31  4  14 -2.98  5 284| 10 40   84 198 50   95| 81 GS              
 2008 09 08 18:52: 6.97 -13.501  166.967 PDE|106.0 6.9 3.1  19 |3.25 89 353 -0.32  0 180 -2.93  0  90|  1 45   91 180 45   89| 80 GS              
 2008 09 09 23:18:26.28 -11.801  166.508 PDE| 96.0 5.6 3.3  17 |3.27 62  43  0.07 22 261 -3.35 15 164|226 36   49  93 64  115| 96 GS              
 2008 10 27 05:43:50.58 -14.635  167.183 PDE|129.0 5.6 3.6  17 |3.78 39 138 -0.39 48 339 -3.39 10 237|286 55   24 182 71  142| 79 GS              

Latest USGS Fast Moment Tensor Solutions

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver


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