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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     14 JUL 2007  (195)

     ot  = 14:51:14.69   +/-   1.63              BONIN ISLANDS, JAPAN REGION     
     lat =      28.096   +/-   21.0
     lon =     140.054   +/-   40.1              MAGNITUDE 3.8 (GS)       
     dep =       472.8   +/-   31.6   

     240 km (150 miles) WNW of Chichi-shima, Bonin Islands, Japan
     390 km (240 miles) NNW of Iwo-jima, Volcano Islands, Japan
     840 km (520 miles) S of TOKYO, Japan

     nph =    9 of   9    se = 0.43    FE=212                            C   

     error ellipse = ( 63.7, 33.8, 81.1;282.4, 49.4, 26.0;167.7, 19.8, 14.5)

 mb = 3.8 (  8)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 MAJO ePn     14:53:16.42   0.0    8.6 350 d:3.3+1     5.5X L:7.3-2 .70 4.3X MAJO
                                           g:4.4-2 .70 3.6X b:4.4+1 .70 4.9X
 LSA  qP      14:58:28.76   0.1   42.6 284 b:2.8+0 .67 3.9                   LSA 
 WRAB eP      14:59:09.94  -0.3   48.1 187 b:5.4+0 .82 4.0                   WRAB
 KURK eP      14:59:30.53  -0.6   50.9 314 b:2.3+0 .56 3.8                   KURK
 TKM2 eP      14:59:48.41  -0.2   53.3 304 b:2.0+0 .70 3.6                   TKM2
 UCH  eP      14:59:55.47   0.3   54.2 304 b:2.9+0 .60 3.8                   UCH 
 AML  eP      14:59:59.86   0.4   54.8 303 b:3.0+0 .67 3.7                   AML 
 BRVK eP      15:00:07.96   0.1   56.1 317 b:6.4+0 .83 4.0                   BRVK
 STKA eP      15:00:32.67   0.3   59.7 178 b:1.4+0 .64 3.5                   STKA



 Generated 2007 JUL 18 at 14:29 UTC

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

 


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