Magnitude 4.7 TONGA
Wednesday, April 22, 2009 at 15:18:21 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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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 07 07 07:26:12.53 -15.244 -173.610 PDE| 34.0 6.0 1.1 18 |1.07 47 195 0.04 0 104 -1.11 43 14| 96 2 81 284 88 90| 93 GS
2006 09 28 06:22: 9.73 -16.592 -172.033 PDE| 36.0 6.7 1.3 19 |1.47 2 294 -0.30 6 25 -1.17 84 186| 19 43 -98 210 47 -82| 59 GS
2006 12 02 09:52:13.21 -17.774 -174.314 PDE|133.0 5.8 5.8 17 |4.86 21 360 1.78 55 236 -6.64 27 101|139 55 -4 231 87 -145| 46 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 04 05 03:25: 7.54 -16.999 -176.941 PDE| 18.0 5.7 4.2 17 |4.18 7 274 0.00 82 116 -4.18 3 5| 50 83 3 319 87 173|100 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 06 23 21:52: 3.08 -16.917 -177.069 PDE| 14.0 5.6 3.0 17 |3.03 13 266 -0.05 75 115 -2.98 7 357| 42 76 4 311 86 166| 97 GS
2007 07 06 17:40:49.64 -16.418 -172.644 PDE| 4.0 5.7 4.6 17 |4.91 34 202 -0.68 23 308 -4.23 47 65|238 24 -162 131 83 -67| 72 GS
2007 07 28 08:53:13.50 -15.898 -175.288 PDE|325.0 5.3 1.3 17 |1.15 4 157 0.21 14 66 -1.36 75 262|261 43 -69 54 50 -108| 69 GS
2007 08 26 12:37:31.19 -17.457 -174.335 PDE| | 40 105 50 285| 15 85 -90 195 5 -90| GS
2007 08 27 17:11:59.63 -17.311 -172.249 PDE| | 25 300 65 120|210 70 -90 30 20 -90| 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 11 02 12:40:10.21 -15.376 -173.165 PDE| 14.0 5.6 3.4 17 |2.22 70 301 1.65 5 196 -3.87 18 104| 19 64 96 185 27 78| 15 GS
2007 11 02 13:30:44.02 -15.593 -173.066 PDE| 14.0 5.7 4.3 17 |3.10 66 306 1.78 7 197 -4.89 21 104| 21 67 98 180 24 71| 27 GS
Latest USGS Fast Moment Tensor Solutions
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
