Phase Data

Explanation of Parameters


     16 FEB 2013  ( 47)

     ot  = 20:45:26.52   +/-   1.40              OFF EAST COAST OF HONSHU, JAPAN 
     lat =      40.826   +/-   15.1
     lon =     144.744   +/-    7.9              MAGNITUDE 4.4 (GS)       
     dep =        10.0   +/-    2.0   

     242 km (150 miles) S of Kushiro, Hokkaido, Japan
     265 km (165 miles) SSE of Obihiro, Hokkaido, Japan
     278 km (173 miles) E of Hachinohe, Honshu, Japan
     719 km (446 miles) NE of TOKYO, Japan

     nph =   22 of  22    se = 0.69    FE=229                            A   

     error ellipse = ( 21.0,  0.0, 24.7;111.0, 14.0,  9.3;289.0, 75.0,  2.1)

 mb = 4.4 (  7)  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
 ERM  ePn     20:45:56.32   0.3    1.7 315                                   ERM 
      eSn     20:46:18.61  S res =   1.0 
 YSS  ePn     20:46:59.17  -0.2    6.3 348                                   YSS 
 MAJO ePn     20:47:04.93   0.4    6.7 232                                   MAJO
 MJB9 ePn     20:47:05.01   0.5    6.7 232                                   MJB9
 INU  ePn     20:47:25.87   0.7    8.2 231                                   INU 
 USA0BePn     20:47:48.80  -1.4   10.0 294                                   USA0
 KS01 ePn     20:48:36.09  -2.0   13.5 261                                   KS01
 JNU  ePn     20:48:36.54  -1.3   13.5 240                                   JNU 
 ULN  eP      20:51:14.43   0.0   27.6 298 b:9.9+0 .90 4.6                   ULN 
 SONA1eP      20:51:18.97   0.6   28.1 298                                   SONA
 ZALV eP      20:53:12.74   0.0   41.4 309                                   ZALV
 ZAA0 eP      20:53:12.88   0.1   41.4 309 b:3.7+0 1.1 4.0                   ZAA0
 MK31 eP      20:53:37.26   0.0   44.4 300                                   MK31
 MKAR eP      20:53:37.26   0.0   44.4 300 b:1.8+1 .45 5.3                   MKAR
 MK01 eP      20:53:37.40   0.1   44.4 300                                   MK01
 MAKZ eP      20:53:38.61  -0.3   44.6 300 b:6.3+0 1.2 4.4                   MAKZ
 KURK eP      20:53:47.16  -0.5   45.7 306 b:5.0+0 .70 4.6                   KURK
 BRVK eP      20:54:21.80   0.6   50.1 311 b:2.3+0 .85 4.2                   BRVK
 KK31 eP      20:54:46.54  -0.7   53.5 299                                   KK31
 KKAR eP      20:54:46.68  -0.6   53.5 299                                   KKAR
 ARU  eP      20:54:59.93   0.2   55.3 318 b:3.7+0 .80 4.5                   ARU 



 Generated 2013 FEB 17 at 08:25 UTC

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