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Earthquake Hazards Program

Historic USGS Moment Tensor Solutions

Magnitude 7.9 TONGA
Wednesday, May 03, 2006 at 15:26:40 UTC

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
---------------------------------------------------------------------------------------------------------------------------------------
 2004 01 25 11:43:11.87 -16.830 -174.196 PDE|139.0 6.7 1.1  19 |1.18 59 251 -0.13 21  21 -1.06 22 120|244 30  137  13 70   67| 78 GS              
 2004 01 29 20:10:41.38 -20.815 -174.163 PDE|  4.0 5.7 4.5  17 |4.46 49 289  0.12 12  34 -4.58 38 133|279 13  156  32 85   78| 95 GS              
 2004 02 12 13:47:32.62 -19.226 -173.518 PDE|  7.0 5.8 6.4  17 |6.51 58 284 -0.14 21  51 -6.36 24 151|276 28  138  44 72   68| 96 GS              
 2004 02 25 16:52:31.84 -20.667 -175.033 PDE| 46.0 5.8 6.4  17 |6.36 64 131  0.01 18 359 -6.37 18 263|326 31   54 187 65  110|100 GS              
 2004 03 14 16:30:42.32 -17.267 -172.316 PDE| 20.0 6.1 1.7  18 |1.79 22 254 -0.17  2 345 -1.62 68  80|339 23  -96 166 67  -88| 81 GS              
 2004 03 18 20:04:24.83 -23.759 -176.002 PDE| 18.0 6.0 9.8  17 |9.87 64 273 -0.15 14  34 -9.72 22 130|245 27  124  28 68   74| 97 GS              
 2004 04 03 13:29:32.29 -20.535 -174.060 PDE|  6.0 5.8 5.9  17 |5.80 45 297  0.12  8  35 -5.92 44 133|304  8  179  35 90   82| 96 GS              
 2004 04 05 08:57: 2.49 -23.525 -175.450 PDE|  5.0 5.8 6.1  17 |6.01 45 255  0.12 20   7 -6.13 38 114|266 21  169   6 86   69| 96 GS              
 2004 04 05 20:34:21.93 -20.436 -173.936 PDE|  4.0 6.2 2.5  18 |2.51 44 281  0.07 13  25 -2.58 43 127|292 14  177  24 89   77| 95 GS              
 2004 04 14 01:33: 5.30 -17.848 -174.559 PDE|133.0 6.0 1.0  18 |0.96 60 310  0.06  7 209 -1.03 29 115|186 17   67  30 75   97| 88 GS              
 2004 04 24 07:44:11.30 -21.899 -174.822 PDE|  4.0 6.1 1.8  18 |1.84 52 286  0.00 16  36 -1.84 34 137|275 18  150  34 81   74|100 GS              
 2004 04 28 11:45:17.12 -16.494 -173.041 PDE| 47.0 5.7 4.6  17 |4.24 10 215  0.63 34 312 -4.87 54 110|271 45 -141 151 63  -52| 74 GS              
 2004 05 03 19:33:16.38 -18.044 -172.550 PDE| 27.0 5.7 4.2  17 |4.24 41  42 -0.08 44 188 -4.16 18 296| 71 47  161 174 76   44| 96 GS              
 2004 06 04 02:38:28.00 -16.052 -173.854 PDE| 66.0 5.4 1.6  17 |1.61 53 134  0.09  9 235 -1.70 36 332|101 12  136 234 81   81| 89 GS              
 2004 06 14 20:06:13.29 -22.087 -174.937 PDE|  5.0 5.8 5.0  17 |4.73 49 282  0.56 13  27 -5.29 38 127|273 14  156  26 84   77| 79 GS              
 2004 11 10 10:35:34.01 -21.192 -176.103 PDE|  9.0 5.6 3.1  17 |3.13 78 170 -0.02 12 354 -3.11  1 264|342 45   73 186 47  106| 99 GS              
 2004 12 18 17:15:26.43 -16.052 -174.785 PDE| 21.0 5.8 4.8  17 |4.87  1 254 -0.10 87   4 -4.77  3 164|299 87 -179 209 89   -3| 96 GS              
 2005 03 19 15:02:42.67 -20.407 -174.337 PDE| 30.0 6.0 1.3  18 |1.28 68 219 -0.01 21  17 -1.27  8 110|222 42  122   2 56   65| 98 GS              
 2005 04 26 18:56:30.45 -19.106 -176.532 PDE| 21.0 5.6 3.0  17 |3.18 11 274 -0.43 78  76 -2.75  4 183|318 79  174  49 85   11| 73 GS              
 2005 05 14 10:02:44.89 -22.696 -176.650 PDE|111.0 5.8 5.1  17 |4.29 65 125  1.67  6  22 -5.95 24 289|  6 21   73 204 70   96| 44 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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