Phase Data

Explanation of Parameters


      5 FEB 2013  ( 36)

     ot  = 12:43:20.71   +/-   1.14              IZU ISLANDS, JAPAN REGION       
     lat =      33.107   +/-    9.2
     lon =     140.579   +/-   10.7              MAGNITUDE 4.4 (GS)       
     dep =        79.2   +/-    7.0   

     74 km (46 miles) E of Hachijo-jima, Izu Islands, Japan (pop 8,000)
     272 km (169 miles) SE of Numazu, Honshu, Japan
     274 km (170 miles) SSE of Yokohama, Honshu, Japan
     296 km (184 miles) SSE of TOKYO, Japan

     nph =   45 of  45    se = 0.56    FE=211                            A   

     error ellipse = (233.0,  9.0, 19.6;334.0, 50.0, 11.5;135.0, 38.0,  8.0)

 mb = 4.4 ( 21)  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     12:43:35.62  -0.1    0.6 271                                   JHJ2
      eSn     12:43:46.26  S res =  -0.6 
 INU  ePn     12:44:16.68   1.2    3.7 308                                   INU 
 MAJO ePn     12:44:18.81  -0.1    4.0 331                                   MAJO
 MJB9 ePn     12:44:19.71   0.8    4.0 331                                   MJB9
 JNU  ePn     12:45:17.40   1.3    8.1 273                                   JNU 
 ERM  ePn     12:45:27.17  -2.3    9.1  12                                   ERM 
      eSn     12:47:05.39  S res =  -5.0 
 YULB eP      12:47:40.29  -1.5   19.5 245 b:8.7+0 1.1 4.0                   YULB
 PBKT eP      12:50:41.54  -0.3   39.3 255 b:4.6+0 1.0 4.3                   PBKT
 ZALV eP      12:51:21.08  -0.1   44.1 316                                   ZALV
      ePcP    12:53:04.95   0.2 
 ZAA0 eP      12:51:21.18   0.0   44.1 316 b:1.9+0 1.1 3.8                   ZAA0
      ePcP    12:53:05.66   0.9 
 MK01 eP      12:51:33.31  -0.5   45.7 305                                   MK01
      ePcP    12:53:11.12   0.7 
 MKAR eP      12:51:33.92   0.0   45.7 305 b:1.4+1 .70 4.9                   MKAR
 MK31 eP      12:51:34.20   0.3   45.7 305                                   MK31
 MAKZ eP      12:51:35.70   0.1   45.9 305 b:2.2+0 .90 4.1                   MAKZ
 KURK eP      12:51:50.57  -0.1   47.9 311 b:4.6+0 .95 4.4                   KURK
 KDJ  eP      12:52:07.05  -0.1   50.0 300 b:4.1+0 .90 4.5                   KDJ 
 GSI  eP      12:52:15.66  -1.0   51.3 241 b:2.1+1 .70 5.3                   GSI 
 TRF  eP      12:52:18.41  -1.1   51.7  32                                   TRF 
 AAK  eP      12:52:20.21  -0.7   51.8 301 b:1.7+0 .65 4.2                   AAK 
 GHO  eP      12:52:23.12  -0.9   52.3  35 b:6.1+0 1.0 4.6                   GHO 
 KNK  eP      12:52:25.05  -0.6   52.5  35 b:4.6+0 1.0 4.4                   KNK 
 MDM  eP      12:52:25.50  -0.7   52.6  30 b:1.4+0 .88 4.0                   MDM 
 WRH  eP      12:52:25.55  -1.0   52.7  31                                   WRH 
 WB2  eP      12:52:29.97  -0.1   53.1 187                                   WB2 
      eP      12:52:30.11   0.0 
 WRAB eP      12:52:30.31   0.3   53.1 187 b:4.9+0 .55 4.8                   WRAB
 WC3  eP      12:52:30.48   0.3   53.1 187 b:4.6+0 .60 4.7                   WC3 
 ARSB eP      12:52:31.38   0.2   53.2 300 b:2.8+0 .80 4.3                   ARSB
 RIDG eP      12:52:36.83  -0.4   54.1  32 b:1.8+0 .96 4.1                   RIDG
 KKAR eP      12:52:40.34  -0.5   54.6 302                                   KKAR
 SCRK eP      12:52:40.54   0.6   54.5  32 b:1.9+0 1.1 4.0                   SCRK
 KK31 eP      12:52:40.59  -0.2   54.6 302                                   KK31
 NIL  eP      12:52:46.00   0.1   55.3 291 b:8.8+0 .40 5.1                   NIL 
 AS01 eP      12:52:57.38   0.5   56.8 187                                   AS01
 AS31 eP      12:52:57.45   0.5   56.8 187 b:1.7+0 .55 4.4                   AS31
 ABKAReP      12:53:19.10   0.3   60.0 312                                   ABKA
 AKBB eP      12:55:04.65   0.0   77.0 323 b:5.2+0 .90 4.4                   AKBB
 BUR08eP      12:55:26.64   0.1   81.0 322                                   BUR0
 BUR04eP      12:55:26.68   0.1   81.0 322                                   BUR0
 BR131eP      12:55:27.22   0.5   80.9 312                                   BR13



 Generated 2013 FEB  5 at 13:34 UTC

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