Phase Data

Explanation of Parameters


     17 APR 2013  (107)

     ot  = 09:30:03.65   +/-   1.73              SOUTHWESTERN RYUKYU ISL., JAPAN 
     lat =      24.775   +/-    4.2
     lon =     123.513   +/-    7.3              MAGNITUDE 4.5 (GS)       
     dep =        10.0   +/-    3.0   

     81 km (50 miles) WNW of Ishigaki-jima, Ryukyu Islands, Japan (pop 45,000)
     169 km (105 miles) E of Su'ao, Taiwan
     203 km (126 miles) E of TAIPEI, Taiwan
     1971 km (1224 miles) WSW of TOKYO, Japan

     nph =   28 of  32    se = 0.85    FE=246                            A   

     error ellipse = ( 86.0,  1.0, 11.2;356.0,  1.0,  6.5;219.0, 87.0,  4.6)

 mb = 4.5 (  1)  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
 YOJ  ePg     09:30:15.07   0.7    0.6 236                                   YOJ 
 TATO ePn     09:30:33.96  -1.4    1.8 277                                   TATO
 NACB ePn     09:30:35.38   0.0    1.9 252                                   NACB
 YHNB ePn     09:30:35.54  -1.3    2.0 267                                   YHNB
 YULB ePn     09:30:42.68  -1.0    2.5 236                                   YULB
 SSLB ePn     09:30:44.42  -0.5    2.5 248                                   SSLB
 TWG  ePn     09:30:50.35  -0.4    3.0 229                                   TWG 
 TPUB ePn     09:30:52.42   0.9    3.0 242                                   TPUB
 JOW  ePn     09:31:14.99  -0.4    4.8  63                                   JOW 
 JNU  ePn     09:32:34.25  -0.3   10.5  36                                   JNU 
 SARN eP      09:35:00.19  -1.2   22.3 107 b:5.8+1 1.5 4.8                   SARN
 ANA2 eP      09:35:02.38   0.0   22.4 108 b:5.2+1 .84 5.0                   ANA2
 GUMO eP      09:35:08.28  -0.5   23.0 115 b:1.2+2 1.1 5.3                   GUMO
 CM01 eP      09:35:17.38   1.7X  23.7 259                                   CM01
 ULN  eP      09:35:40.78  -0.3   26.5 335                                   ULN 
 KAPI eP      09:36:11.02  -0.2   29.8 188 b:1.4+1 1.4 4.6                   KAPI
 TLY  eP      09:36:21.47   1.5   30.9 336 b:1.1+1 1.5 4.5                   TLY 
 PBA  eP      09:36:28.18  -1.4   31.9 252 b:4.2+1 .70 5.5                   PBA 
 LHMI eP      09:36:28.84  -2.1X  32.1 237 b:2.5+2 1.1 6.1                   LHMI
 MK01 eP      09:37:32.95  -0.6   39.4 315                                   MK01
 MK31 eP      09:37:33.74   0.0   39.4 315 b:4.1+0 1.1 4.0                   MK31
 MAKZ eP      09:37:35.61   0.2   39.6 315 b:8.0+0 1.2 4.3                   MAKZ
 ZALV eP      09:37:46.24   0.1   40.9 326                                   ZALV
 KDJ  eP      09:37:52.83  -0.9X  41.8 306 b:2.7+0 .85 4.0                   KDJ 
 NRN  eP      09:38:01.03   0.9   42.6 305 b:1.1+1 1.3 4.4                   NRN 
 KURK eP      09:38:04.38   1.1   43.0 319 b:4.8+0 1.0 4.2                   KURK
 WB2  eP      09:38:25.74   0.9X  45.7 166                                   WB2 
      eP      09:38:26.74   1.9 
 WRAB eP      09:38:26.54   1.8   45.7 166 b:8.4+0 .90 4.7                   WRAB
 TIXI eP      09:38:34.51   0.0   47.0   2 b:8.1+0 1.4 4.6                   TIXI
 ABKAReP      09:39:31.66  -0.3   54.5 314 b:2.7+0 .95 4.3                   ABKA
 SHL  eS      09:40:50.23   1.1   28.6 278                                   SHL 



 Generated 2013 APR 17 at 09:54 UTC

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