Phase Data

Explanation of Parameters


     23 FEB 2013  ( 54)

     ot  = 11:27:15.59   +/-   1.16              NEAR EAST COAST OF HONSHU, JAPAN
     lat =      35.244   +/-    9.3
     lon =     141.088   +/-   10.8              MAGNITUDE 4.7 (GS)       
     dep =        30.0   +/-    5.4   

     131 km (81 miles) ESE of TOKYO, Japan (pop 8,489,000)
     134 km (83 miles) E of Yokohama, Honshu, Japan (pop 3,579,000)
     136 km (84 miles) SSE of Mito, Honshu, Japan (pop 262,000)
     182 km (113 miles) SE of Utsunomiya, Honshu, Japan

     nph =   47 of  47    se = 0.57    FE=228                            A   

     error ellipse = (280.0,  6.0, 16.6;190.0,  5.0, 14.2; 57.0, 81.0,  8.0)

 mb = 4.7 ( 26)  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
 JHJ2 ePn     11:27:53.03   0.6    2.4 207                                   JHJ2
 MJB9 ePn     11:27:57.76   1.1    2.7 300                                   MJB9
 MAJO ePn     11:27:58.03   1.4    2.7 300                                   MAJO
 INU  ePn     11:28:06.55   1.1    3.3 273                                   INU 
 ERM  ePn     11:28:52.58  -2.7    7.0  13                                   ERM 
      eSn     11:30:11.52  S res =  -1.8 
 JNU  ePn     11:29:21.50   1.8    8.7 259                                   JNU 
 YSS  ePn     11:29:58.46  -2.9   11.8   6                                   YSS 
 PEA0BeP      11:31:59.88  -0.6   21.4  28 b:2.6+1 1.3 4.5                   PEA0
 MA2  eP      11:32:37.20  -0.7   25.2  12 b:8.2+0 .70 4.4                   MA2 
 SONA1eP      11:33:09.26   0.0   28.6 307                                   SONA
 ZALV eP      11:35:11.15  -0.4   42.9 314                                   ZALV
 ZAA0 eP      11:35:11.44  -0.1   42.9 314 b:6.3+0 1.0 4.3                   ZAA0
 MKAR eP      11:35:26.49  -0.6   44.9 304 b:3.4+1 .65 5.4                   MKAR
 MK31 eP      11:35:26.78  -0.3   44.9 304                                   MK31
 MK01 eP      11:35:26.89  -0.2   44.9 304                                   MK01
 MAKZ eP      11:35:28.60  -0.2   45.1 304 b:4.8+0 .75 4.5                   MAKZ
 KURK eP      11:35:42.68   0.1   46.8 310 b:1.0+1 .85 4.8                   KURK
 MTN  eP      11:35:57.39  -0.2   48.8 193 b:3.2+1 1.3 5.2                   MTN 
 COEN eP      11:35:59.71   0.4   49.0 177 b:1.6+1 1.0 5.0                   COEN
 TARG eP      11:35:59.87   0.1   49.0 298 b:9.5+0 .80 4.9                   TARG
 BRLK eP      11:36:03.46   1.1   49.4  38 b:5.4+1 1.6 5.3                   BRLK
 TOLK eP      11:36:08.66   0.5   50.2  27 b:5.2+0 1.1 4.4                   TOLK
 MDM  eP      11:36:11.49   0.4   50.6  31 b:6.0+0 .84 4.6                   MDM 
 IL1  eP      11:36:14.95  -0.5   51.1  32                                   IL1 
 ARSB eP      11:36:27.14   0.6   52.6 298 b:5.7+0 .95 4.5                   ARSB
 KK31 eP      11:36:35.37  -0.1   53.8 301                                   KK31
 KKAR eP      11:36:35.37  -0.1   53.8 301                                   KKAR
 FITZ eP      11:36:44.23  -0.3   55.0 198 b:1.3+1 .90 4.9                   FITZ
 WB2  eP      11:36:44.82  -1.2   55.3 188                                   WB2 
      eP      11:36:45.53  -0.5 
 WRAB eP      11:36:45.18  -0.8   55.2 188 b:3.0+1 1.2 5.2                   WRAB
 GAR  eP      11:36:45.96  -0.1   55.2 297 b:1.6+1 1.3 4.9                   GAR 
 CHGR eP      11:36:52.90  -0.1   56.2 297 b:1.6+1 .68 5.2                   CHGR
 ARU  eP      11:37:02.15   0.2   57.5 319 b:9.8+0 .80 4.9                   ARU 
 ABKAReP      11:37:11.77   0.2   58.9 311                                   ABKA
 AS01 eP      11:37:12.04  -0.3   59.0 188                                   AS01
 AS31 eP      11:37:13.02   0.6   59.0 188 b:2.5+0 .45 4.6                   AS31
 RES  eP      11:37:48.37   0.1   64.4  14 b:3.0+0 .70 4.5                   RES 
 CMB  eP      11:38:56.07   1.1   75.1  54 b:6.7+0 1.3 4.5                   CMB 
 H17A eP      11:39:11.52   2.7   77.5  44 b:5.5+0 1.0 4.5                   H17A
 KNB  eP      11:39:28.27   2.5   80.6  51 b:6.8+0 1.0 4.6                   KNB 
 SCHQ eP      11:39:58.38   0.0   87.1  16 b:3.0+1 1.5 5.3                   SCHQ
 TX31 eP      11:40:19.15   0.0   91.4  52                                   TX31
      eP      11:40:19.24   0.0 
 LPAZ ePKPbc  11:46:58.90   0.1  147.8  61                                   LPAZ
 LCO  ePKPbc  11:47:08.94  -0.4  152.4  85                                   LCO 



 Generated 2013 FEB 23 at 11:51 UTC

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