Phase Data

Explanation of Parameters


     20 FEB 2013  ( 51)

     ot  = 17:44:36.70   +/-   1.63              RYUKYU ISLANDS, JAPAN           
     lat =      25.128   +/-   12.0
     lon =     127.863   +/-   13.1              MAGNITUDE 4.6 (GS)       
     dep =        33.8   +/-    4.8   

     121 km (75 miles) S of Naha, Okinawa, Japan (pop 312,000)
     379 km (235 miles) ENE of Ishigaki-jima, Ryukyu Islands, Japan
     1632 km (1014 miles) SW of TOKYO, Japan

     nph =   50 of  68    se = 0.81    FE=238                            A   

     error ellipse = (126.0,  6.0, 21.9;216.0,  2.0, 16.4;329.0, 82.0,  6.8)

 mb = 4.6 ( 24)  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
 JOW  ePn     17:45:02.79  -1.8    1.7  12                                   JOW 
 NACB ePn     17:45:59.06  -1.0    5.8 262                                   NACB
 YULB ePn     17:46:03.59  -2.8X   6.2 255                                   YULB
 SSLB ePn     17:46:07.65  -1.5    6.4 260                                   SSLB
 TWG  ePn     17:46:09.26  -2.3X   6.6 251                                   TWG 
 TPUB ePn     17:46:14.73  -0.1    6.9 256                                   TPUB
 JNU  ePn     17:46:35.41  -0.6    8.4  18                                   JNU 
 MAJO ePn     17:47:57.76  -0.7   14.4  36                                   MAJO
 BJT  ePn     17:48:42.53   0.9X  17.8 329 b:1.3+1 .90 4.1                   BJT 
 XAN  eP      17:48:50.75  -1.4   18.7 303 b:5.7+0 .75 3.8                   XAN 
 ASAJ eP      17:49:31.82  -0.6   22.4  29                                   ASAJ
      eLR     17:58:33.89                                  
 KLR  eP      17:49:50.58   0.2   24.3   6                                   KLR 
 YSS  eP      17:49:54.26  -1.3   24.8  25 b:9.8+1 1.4 5.2                   YSS 
 ULN  eP      17:50:24.30  -0.4   28.0 329 b:1.2+1 1.5 4.4                   ULN 
 SONA0eP      17:50:26.56  -0.7   28.3 329                                   SONA
      eLR     18:03:10.84                                  
 SONA1eP      17:50:26.63  -0.7   28.3 329                                   SONA
 LSA  eP      17:51:07.38  -0.4   32.8 286 b:2.9+0 .70 4.3                   LSA 
 CBIJ eLR     17:51:48.69         13.0  78                                   CBIJ
 MK01 eP      17:52:24.65  -0.2   42.0 313                                   MK01
 MKAR eP      17:52:24.75  -0.2   42.0 313 b:1.9+1 .50 5.1                   MKAR
 MK31 eP      17:52:24.88  -0.1   42.0 313                                   MK31
 MK32 eP      17:52:25.37   0.4   42.0 313                                   MK32
      ePcP    17:54:20.70   1.2 
      eLR     18:11:32.65                                  
 MAKZ eP      17:52:27.00   0.3   42.2 313 b:5.8+0 1.1 4.2                   MAKZ
 ZALV eP      17:52:32.04   0.0   42.9 324                                   ZALV
 ZAA0 eP      17:52:32.15   0.1   42.9 324 b:1.8+1 1.8 4.5                   ZAA0
 ZAA1 eP      17:52:32.45   0.4   42.9 324                                   ZAA1
      eLR     18:12:08.33                                  
 WB2  eP      17:52:50.57  -0.4   45.2 171                                   WB2 
 WR1  eP      17:52:50.60  -0.3   45.2 171 b:2.0+1 1.7 4.7                   WR1 
 NRN  eP      17:52:55.20   0.9   45.6 304 b:4.9+0 1.1 4.3                   NRN 
 AS31 eP      17:53:19.17   0.0   48.9 173 b:8.0-1 .90 3.8                   AS31
 AS01 eP      17:53:19.45   0.3   48.9 173                                   AS01
 KK31 eP      17:53:27.30   1.2   49.8 306                                   KK31
 KKAR eP      17:53:27.57   1.5   49.8 306 b:5.5+0 1.4 4.4                   KKAR
 BRVK eP      17:53:35.79   1.1   51.0 319 b:9.4+0 1.2 4.6                   BRVK
 ABKAReP      17:54:19.65  -0.5   57.2 314 b:4.5+0 .90 4.5                   ABKA
 MDM  eP      17:55:14.07   1.2   65.0  28 b:1.8+1 1.3 5.0                   MDM 
 KIV  eP      17:55:42.78  -0.4   69.7 310 b:1.1+1 .90 4.9                   KIV 
 INK  eP      17:55:43.87  -0.8   70.0  23 b:1.0+1 1.4 4.7                   INK 
 KBZ  eP      17:55:44.25   1.8   69.6 310                                   KBZ 
      eLR     18:30:41.69                                  
 FIA0 eP      17:56:07.72   1.1   73.7 331                                   FIA0
      eLR     18:32:20.17                                  
 RAYN eP      17:56:07.86  -0.6   73.9 289 b:7.1+0 1.1 4.6                   RAYN
 KIEV eP      17:56:20.65  -0.6   76.2 320 b:6.0+0 .90 4.6                   KIEV
 AKBB eP      17:56:21.75   0.5   76.2 320                                   AKBB
      eLR     18:32:07.11                                  
 AK11 eP      17:56:21.75   0.3   76.2 320                                   AK11
 GUMO eLR     17:56:29.08         19.7 123                                   GUMO
 BR131eP      17:56:29.37   0.4   77.5 308                                   BR13
 BR101eP      17:56:29.53   0.6   77.5 308                                   BR10
      eLR     18:33:43.15                                  
 YKB5 eP      17:56:40.81   0.3   79.7  25                                   YKB5
 BUR04eP      17:56:42.83   1.0   79.8 318                                   BUR0
 NB200eP      17:56:43.28   0.0   80.2 334                                   NB20
      eLR     18:35:45.54                                  
 SUMG eP      17:56:54.66   0.8   82.1 356 b:4.1+1 1.7 5.2                   SUMG
 VTS  eP      17:57:02.12   1.5   83.3 314 b:8.3+0 .90 4.8                   VTS 
 GEA0 eP      17:57:13.13  -0.1   85.9 323                                   GEA0
 GEC2 eP      17:57:13.38   0.2   85.9 323 b:4.7+0 1.0 4.6                   GEC2
 JAY  eLR     17:59:33.22         30.2 154                                   JAY 
 BATI eLR     18:05:13.94         35.4 187                                   BATI
 PEA1 eLR     18:08:15.52         35.8  31                                   PEA1
 PPT  eLR     18:33:23.40         90.8 109                                   PPT 



 Generated 2013 MAR 19 at 23:19 UTC

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