Historic USGS Moment Tensor Solutions

Magnitude 6.7 TONGA
Saturday, April 28, 2012 at 10:08:07 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
---------------------------------------------------------------------------------------------------------------------------------------
 2009 08 15 23:30:19.30 -19.826 -178.239 PDE|597.0 5.6 3.2  17 |3.30 34 136 -0.16  4  43 -3.15 55 307|246 11  -67  43 79  -94| 90 GS              
 2009 08 30 14:51:32.89 -15.223 -172.571 PDE|  7.0 6.5 6.3  18 |6.99  9 211 -1.81  4 120 -5.17 79   3|117 54  -96 307 36  -82| 48 GS              
 2009 10 01 06:13:33.31 -15.387 -173.252 PDE| 11.0 5.7 4.0  17 |4.27 70 226 -0.50  1 132 -3.78 19  41|313 65   92 129 26   86| 77 GS              
 2009 10 02 01:07:39.26 -16.335 -173.471 PDE|  5.0 6.0 1.4  18 |1.25 14 228  0.34 27 326 -1.59 58 113|160 65  -60 287 39 -137| 57 GS              
 2009 10 04 09:10:31.61 -16.231 -173.240 PDE| 23.0 5.4 1.7  17 |1.77 52 278 -0.21  7  19 -1.55 36 115| 18 82   82 242 12  133| 76 GS              
 2009 10 04 17:09:53.16 -16.352 -173.255 PDE| 25.0 5.3 1.2  17 |1.33 56 267 -0.31  6 167 -1.03 32  73|349 78   97 140 14   62| 53 GS              
 2009 10 19 07:41:38.24 -15.437 -172.976 PDE| 10.0 5.8 5.4  17 |5.81 26  32 -0.86  0 122 -4.95 63 212|122 18  -90 302 72  -90| 70 GS              
 2009 10 19 22:49:38.41 -15.360 -172.264 PDE|                  |     15 216                    38 114|160 75  -40 262 52 -161|    GS              
 2009 11 01 21:28:58.94 -15.505 -173.753 PDE|108.0 5.8 5.9  17 |6.36 44 250 -1.08 18 359 -5.28 39 105|358 87   72 260 18  171| 66 GS              
 2009 11 12 02:13:37.58 -20.979 -178.662 PDE|565.0 5.8 5.9  17 |5.75 32 150  0.23 20  46 -5.98 49 289|291 23  -23  43 81 -111| 92 GS              
 2009 11 22 07:48:20.61 -17.794 -178.425 PDE|536.0 6.4 4.3  18 |4.25 28 156  0.08 25  51 -4.33 50 287|293 29  -26  46 78 -116| 96 GS              
 2009 12 11 12:33:39.04 -21.056 -174.448 PDE| 11.0 5.6 2.8  17 |2.21 80  47  0.89  8 209 -3.09  2 299| 39 43  103 202 48   78| 42 GS              
 2009 12 25 22:04:26.98 -15.963 -173.059 PDE| 47.0 5.6 2.8  17 |2.67 41 198  0.16 38 334 -2.84 24  85|326 80   51 224 41  164| 89 GS              
 2009 12 26 21:23:27.30 -17.299 -176.941 PDE| 17.0 5.5 2.1  17 |1.85 12 280  0.40 75  74 -2.25  6 189| 55 85   13 324 77  175| 64 GS              
 2010 02 09 01:03:44.44 -15.053 -173.492 PDE| 14.0 5.8 6.0  17 |6.07 34 321 -0.12 39 196 -5.95 31  75| 18 89  130 110 40    2| 96 GS              
 2010 02 13 02:34:28.86 -21.902 -174.767 PDE| 11.0 6.1 1.6  18 |1.30 67 255  0.47 18  35 -1.76 13 130| 25 61   69 243 35  123| 47 GS              
 2010 02 22 05:08:49.03 -21.511 -173.778 PDE| 29.0 5.7 3.9  17 |3.29 70  67  1.03  7 177 -4.31 18 269| 11 28  105 174 64   82| 52 GS              
 2010 04 10 16:54:24.25 -20.114 -176.223 PDE|273.0 6.0 1.1  18 |1.03 50 301  0.14 17 188 -1.17 33  86| 12 81  108 128 20   28| 76 GS              
 2010 04 21 17:20:29.11 -15.271 -173.219 PDE| 31.0 6.1 1.6  18 |1.64 18 239 -0.15 51 124 -1.49 32 341|113 81 -142  16 53  -11| 82 GS              
 2010 06 22 22:16:20.59 -19.201 -177.553 PDE|567.0 5.8 6.1  17 |4.60 17 328  2.29 35  72 -6.89 48 216| 18 41 -152 266 72  -52| 34 GS              

Latest USGS Fast Moment Tensor Solutions

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