Phase Data

Explanation of Parameters


     17 APR 2013  (107)

     ot  = 21:13:46.40   +/-   2.05              SOUTHWESTERN RYUKYU ISL., JAPAN 
     lat =      24.869   +/-    6.2
     lon =     123.201   +/-    9.6              MAGNITUDE 4.7 (GS)       
     dep =        10.2   +/-    5.5   

     114 km (71 miles) WNW of Ishigaki-jima, Ryukyu Islands, Japan (pop 45,000)
     139 km (87 miles) ENE of Su'ao, Taiwan (pop 44,000)
     170 km (106 miles) E of TAIPEI, Taiwan
     1988 km (1235 miles) WSW of TOKYO, Japan

     nph =   38 of  42    se = 1.01    FE=246                            A   

     error ellipse = (105.0,  2.0, 15.0; 15.0, 14.0,  9.0;203.0, 75.0,  8.3)

 mb = 4.7 ( 23)  ML = 3.8 ( 20)  mblg = 3.4 ( 12)  md = 4.4 (  4)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 YOJ  ePg     21:13:54.69  -0.2    0.4 203 d:1.4+2     3.6  L:3.2+1 1.0 4.1  YOJ 
 TATO ePn     21:14:14.11   0.1    1.5 274 d:2.1+2     4.4  L:2.0+0 4.3 3.7  TATO
                                           g:3.6-1 .80 3.6 
 NACB ePn     21:14:14.41  -0.6    1.6 245 d:1.9+2     4.3  L:1.6+0 3.1 3.7  NACB
 YHNB ePn     21:14:15.46  -0.3    1.7 264 d:2.3+2     4.5  L:1.7+0 3.4 3.7  YHNB
                                           g:3.7-1 .85 3.6 
 YULB ePn     21:14:23.36  -0.7    2.3 230 L:5.8-1 4.3 3.5  g:1.1-1 .85 3.2  YULB
 SSLB ePn     21:14:24.51  -0.1    2.3 243 L:7.2-1 3.4 3.6  g:1.3-1 .75 3.3  SSLB
 TWG  ePn     21:14:30.36  -1.1    2.8 224 L:2.9+0 1.7 4.4  g:1.1+0 1.2 4.3  TWG 
 TPUB ePn     21:14:32.96   1.4    2.8 237 L:7.6-1 4.5 3.8  g:3.3-1 1.2 3.8  TPUB
 JOW  ePn     21:15:03.69   2.6    5.0  66 L:2.3-1 4.3 4.0  g:4.0-2 1.1 3.1  JOW 
 JNU  ePn     21:16:24.11   5.5   10.6  38                                   JNU 
 KS01 ePn     21:17:01.54   7.8   13.2  17                                   KS01
 KS15 ePn     21:17:02.23   8.2   13.2  16                                   KS15
 USA0BeP      21:18:24.98  -0.3   20.6  18 b:8.1+1 1.9 4.7                   USA0
 CM01 eP      21:18:55.74  -0.1   23.4 259                                   CM01
 CHTO eP      21:18:55.76   1.1   23.3 260 b:1.7+1 1.1 4.5                   CHTO
 CM31 eP      21:18:57.59   1.7   23.4 259 b:9.9+0 1.0 4.3                   CM31
 TNTI eP      21:19:05.82   1.8   24.3 170 b:3.1+1 1.0 4.9                   TNTI
 LUWI eP      21:19:18.06   0.7   25.8 181 b:7.4+1 1.2 5.3                   LUWI
 ULN  eP      21:19:23.02   1.0   26.3 335 b:6.7+1 1.8 5.0                   ULN 
 SHL  eP      21:19:42.75   2.2X  28.3 278 b:1.3+1 .94 4.7                   SHL 
 MK01 eP      21:21:13.72  -0.4   39.1 315                                   MK01
 MK31 eP      21:21:14.92   0.7   39.1 315 b:1.2+1 1.3 4.4                   MK31
 MAKZ eP      21:21:15.72  -0.2   39.3 315 b:2.1+1 1.4 4.6                   MAKZ
 ZALV eP      21:21:26.00  -0.9   40.7 326                                   ZALV
 ZAA0 eP      21:21:27.15   0.3   40.7 326 b:7.1+0 .85 4.4                   ZAA0
 NRN  eP      21:21:41.77   1.2   42.3 305 b:9.4+0 1.1 4.4                   NRN 
 KURK eP      21:21:43.88   0.0   42.8 319 b:8.7+0 .85 4.5                   KURK
 FITZ eP      21:21:44.28   0.0   42.8 177                                   FITZ
 COEN eP      21:21:48.04   0.0   43.2 151 b:1.5+1 .95 4.7                   COEN
 WB2  eP      21:22:07.80  -1.0X  45.8 165                                   WB2 
      eP      21:22:08.37  -0.5X
 WRAB eP      21:22:08.42  -0.4   45.8 165 b:1.8+1 .80 5.1                   WRAB
 TIXI eP      21:22:15.46  -1.1   46.9   3 b:4.1+1 1.7 5.2                   TIXI
 BRVK eP      21:22:28.31  -0.1   48.4 320 b:2.8+1 1.9 5.0                   BRVK
 AS01 eP      21:22:35.34  -0.8X  49.4 167                                   AS01
 ABKAReP      21:23:12.62  -0.1   54.3 314 b:4.1+0 .70 4.6                   ABKA
 ARU  eP      21:23:21.80  -0.8   55.7 323 b:1.9+1 1.5 4.9                   ARU 
 STKA eP      21:23:46.75  -0.2   59.1 162 b:2.0+0 1.3 4.1                   STKA
 VTS  eP      21:25:59.54   0.9   80.4 313                                   VTS 
 SCO  eP      21:26:05.79   0.9   81.8 349                                   SCO 
 FCC  eP      21:26:51.15   0.0   91.1  18                                   FCC 
 FFC  eP      21:26:54.26   0.0   91.8  24                                   FFC 



 Generated 2013 APR 17 at 21:30 UTC

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