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Earthquake Hazards Program

Magnitude 6.9 TONGA

Sunday, October 19, 2008 at 05:10:33 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
---------------------------------------------------------------------------------------------------------------------------------------
 2005 11 24 10:46:38.37 -24.273 -176.313 PDE| 26.0 5.5 2.0  17 |2.13 79 276 -0.28  5  31 -1.85 10 122|218 35   98  28 55   84| 74 GS              
 2006 03 05 08:07:56.57 -20.118 -175.661 PDE|201.0 6.0 1.3  18 |1.28 25 196 -0.02 35 306 -1.26 44  79|238 37 -162 134 79  -54| 97 GS              
 2006 05 03 15:26:40.29 -20.187 -174.123 PDE| 79.0 7.9 8.5  20 |8.44 58 281  0.02  8 177 -8.46 30  82|147 17   59 359 76   99|100 GS              
 2006 05 04 11:25:26.05 -20.579 -174.036 PDE|  7.0 6.0 1.3  18 |1.31 41 273 -0.02 15  16 -1.29 45 122|294 15 -172 197 88  -75| 97 GS              
 2006 05 05 04:19:40.92 -20.261 -173.866 PDE|  5.0 5.5 2.1  17 |2.19 13  91 -0.19  7 182 -2.00 75 302|171 33 -104   7 58  -81| 83 GS              
 2006 05 05 06:16:20.29 -19.833 -174.652 PDE| 26.0 5.9 8.1  17 |8.10 15 311 -0.06 66 184 -8.04 18  46| 88 67   -2 179 88 -157| 99 GS              
 2006 05 17 03:06:16.36 -20.634 -173.952 PDE|  6.0 6.0 1.1  18 |1.12 41 267 -0.06 17  13 -1.06 44 120|289 17 -174 193 88  -73| 89 GS              
 2006 05 17 21:57:49.07 -20.617 -173.972 PDE|  4.0 5.8 7.3  17 |7.31 39 286 -0.02  6 192 -7.29 51  95| 55  8  -46 191 84  -96| 99 GS              
 2006 07 03 13:40: 0.96 -20.485 -176.109 PDE|205.0 5.4 1.8  17 |1.80 25 115  0.01  4  23 -1.80 65 284|214 21  -78  21 70  -94| 99 GS              
 2006 08 15 23:53:46.77 -21.189 -176.250 PDE|156.0 6.1 2.1  18 |2.05 34 127  0.04 35   9 -2.09 37 248|275 35   -3   8 88 -125| 96 GS              
 2006 09 03 04:26:29.41 -21.801 -175.146 PDE| 34.0 5.6 3.2  17 |3.17 61 197  0.13 28  32 -3.30  6 298|  1 46   49 232 57  124| 92 GS              
 2006 10 08 13:50:24.11 -23.554 -175.271 PDE|  8.0 5.8 6.2  17 |6.07 16 312  0.35  2  42 -6.43 74 141| 38 29  -95 224 61  -87| 89 GS              
 2006 11 24 19:55: 1.04 -23.422 -175.572 PDE|  5.0 5.7 5.3  17 |5.22 54 317  0.25  1 227 -5.46 36 136|223  9   87  47 81   91| 91 GS              
 2006 11 30 11:33:17.02 -21.297 -174.677 PDE|  7.0 6.0 1.3  18 |1.34 55 301 -0.03  2  33 -1.31 35 124|223 10  100  33 80   88| 96 GS              
 2006 12 17 12:51: 8.66 -21.258 -174.472 PDE| 10.0 5.7 4.2  17 |4.40 77 298 -0.40  0 207 -4.00 13 117|207 32   89  27 58   90| 82 GS              
 2007 01 08 20:52:20.64 -18.580 -177.847 PDE|410.0 6.3 3.6  18 |3.53 41 249  0.07 48  81 -3.61  6 344| 35 57   28 289 67  144| 96 GS              
 2007 02 05 09:55:51.10 -20.609 -175.650 PDE| 22.0 5.7 5.3  17 |5.34 10 264 -0.15 78 109 -5.18  5 354| 39 79    4 309 86  169| 94 GS              
 2007 05 27 18:12:34.77 -20.069 -174.519 PDE| 36.0 5.6 3.1  17 |3.19 65 116 -0.17 25 304 -3.02  3 212|279 47   56 144 53  122| 89 GS              
 2007 10 08 18:37:53.70 -20.706 -177.398 PDE|323.0 5.7 5.2  17 |5.40 26 202 -0.42  2 110 -4.98 63  14|110 72  -93 300 19  -81| 84 GS              
 2007 12 09 07:28:20.82 -25.996 -177.514 PDE|180.0 7.7 4.2  20 |3.77 60 167  0.83  0 258 -4.60 29 348| 80 16   92 258 74   90| 64 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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