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Earthquake Hazards Program

Magnitude 4.5 SAIPAN REGION, NORTHERN MARIANA ISLANDS

Friday, April 17, 2009 at 04:43:22 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
---------------------------------------------------------------------------------------------------------------------------------------
 2004 02 22 23:17:15.16  18.505  145.387 PDE|189.0 5.7 4.2  17 |3.66 62 177  1.15 27 341 -4.81  6  74|191 45  129 322 57   58| 52 GS              
 2004 03 23 21:20:39.67  18.774  144.735 PDE| 24.0 5.4 1.8  17 |1.78 15 292 -0.06 19  27 -1.73 65 166|357 34 -125 217 63  -68| 93 GS              
 2004 03 23 21:57: 7.48  18.788  144.764 PDE| 22.0 5.7 4.7  17 |4.69 17 293 -0.03  3  24 -4.66 73 123| 19 28  -96 206 62  -87| 99 GS              
 2004 05 13 17:34:36.27  11.743  144.247 PDE| 20.0 5.8 5.6  17 |5.89  2 340 -0.64 86  92 -5.25  4 250| 25 86 -178 295 88   -4| 78 GS              
 2004 10 04 19:20:34.98  14.546  146.993 PDE|  8.0 5.9 8.5  17 |8.16  9 287  0.59  4  18 -8.75 80 134| 12 37  -97 201 54  -85| 87 GS              
 2004 11 03 08:31:43.73  14.474  146.842 PDE| 21.0 5.8 7.1  17 |7.35 24 100 -0.47 11   5 -6.89 63 253|213 23  -61   1 70 -102| 87 GS              
 2005 02 02 02:30:25.94  14.080  144.715 PDE|162.0 6.2 2.4  18 |2.43  9  47  0.01 75 282 -2.44 12 138|182 75   -3 273 87 -165| 99 GS              
 2005 02 05 03:34:25.73  16.011  145.867 PDE|124.0 6.5 7.1  18 |7.06 13 212 -0.02 28 309 -7.04 59 101|270 41 -137 145 63  -58| 99 GS              
 2005 04 21 21:31:48.79  13.179  145.056 PDE| 36.0 5.4 1.8  17 |2.05 53 337 -0.58 23 212 -1.47 26 109|158 28   33  38 75  114| 43 GS              
 2005 05 04 04:38: 6.62  11.710  143.779 PDE| 15.0 5.4 1.6  17 |1.53 11  13  0.07  2 282 -1.60 78 181|105 34  -86 281 57  -93| 91 GS              
 2005 12 03 20:38:11.86  12.190  141.008 PDE|  6.0 5.6 3.3  17 |3.40  2 324 -0.20 10 233 -3.20 80  64| 64 44  -75 224 48 -104| 88 GS              
 2006 01 02 01:01:24.39  12.361  144.310 PDE|  3.0 5.7 4.1  17 |4.19 33  94 -0.09 30 206 -4.09 43 327|128 30 -169  29 84  -60| 96 GS              
 2006 01 03 12:27:57.67  13.841  145.287 PDE| 55.0 5.8 6.0  17 |7.60 51 326 -3.28 16  76 -4.32 34 177|316 18  150  74 81   74| 14 GS              
 2007 02 15 18:29: 4.38  11.807  141.874 PDE| 53.0 5.4 1.8  17 |1.72 13 321  0.11 48  66 -1.84 39 220|  8 53 -159 265 74  -39| 88 GS              
 2007 10 06 12:38:49.17  18.730  147.148 PDE| 16.0 6.0 1.3  18 |1.31 16 215 -0.06 67 348 -1.26 15 121|348 90   23 258 67  180| 91 GS              
 2007 10 31 03:30:15.96  18.900  145.388 PDE|224.0 7.2 7.2  19 |7.84 48 159 -1.58 41 340 -6.25  0 250|306 57   38 193 59  141| 60 GS              
 2008 02 28 09:12:54.66  12.680  141.766 PDE|  7.0 5.5 1.9  17 |1.96 10 200 -0.06  5 291 -1.91 78  51|116 55  -83 284 35 -100| 94 GS              
 2008 03 26 20:06: 5.84  13.594  144.879 PDE| 49.0 5.5 2.2  17 |2.10 61   1  0.13 18 129 -2.23 20 226|347 29  131 122 68   70| 88 GS              
 2008 04 08 02:09:16.85  12.590  143.788 PDE|  9.0 5.5 2.2  17 |2.01  2  43  0.40 83 287 -2.41  5 133|179 84   -2 269 88 -174| 67 GS              
 2008 04 17 17:02:52.25  15.885  144.878 PDE|  4.0 5.5 1.9  17 |1.64 18 285  0.49 16  21 -2.13 64 150|209 65  -72 351 30 -124| 54 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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