Phase Data

Explanation of Parameters


     19 APR 2013  (109)

     ot  = 04:04:34.72   +/-   1.27              SOUTHWESTERN RYUKYU ISL., JAPAN 
     lat =      24.808   +/-    6.9
     lon =     123.029   +/-    9.8              MAGNITUDE 4.6 (GS)       
     dep =        13.8   +/-    4.8   

     121 km (75 miles) E of Su'ao, Taiwan (pop 44,000)
     127 km (79 miles) WNW of Ishigaki-jima, Ryukyu Islands, Japan (pop 45,000)
     154 km (96 miles) E of TAIPEI, Taiwan (pop 2,622,000)
     171 km (106 miles) ENE of Hualien, Taiwan

     nph =   27 of  30    se = 0.63    FE=246                            A   

     error ellipse = (283.0,  2.0, 15.3;191.0, 30.0, 11.4; 17.0, 59.0,  4.9)

 mb = 4.6 ( 18)  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     04:04:41.67   0.0    0.3 183                                   YOJ 
 TATO ePn     04:04:59.86   0.0    1.4 277                                   TATO
 NACB ePn     04:05:00.41  -0.2    1.4 245                                   NACB
 YHNB ePn     04:05:01.56   0.1    1.5 265                                   YHNB
 YULB ePn     04:05:09.21  -0.6    2.1 229                                   YULB
 SSLB ePn     04:05:10.81   0.6    2.1 242                                   SSLB
 TWG  ePn     04:05:16.21  -1.1    2.7 222                                   TWG 
 TPUB ePn     04:05:18.27   1.1    2.7 236                                   TPUB
 JOW  ePn     04:05:53.49   2.2    5.1  66                                   JOW 
 CHTO eP      04:09:41.80   1.1   23.1 260 b:1.2+1 1.1 4.3                   CHTO
 MK01 eP      04:12:01.02  -0.3   39.1 315                                   MK01
 MK31 eP      04:12:01.95   0.5   39.1 315 b:1.0+1 1.1 4.4                   MK31
 MAKZ eP      04:12:03.69   0.5   39.3 315 b:1.4+1 1.0 4.6                   MAKZ
 ZALV eP      04:12:13.27  -1.1   40.6 326                                   ZALV
 ZAA0 eP      04:12:13.92  -0.4   40.6 326 b:2.5+1 1.5 4.7                   ZAA0
 FITZ eP      04:12:30.68  -0.9   42.7 176 b:1.8+1 1.5 4.6                   FITZ
 KURK eP      04:12:31.17   0.0   42.7 319 b:1.6+1 1.2 4.6                   KURK
 COEN eP      04:12:36.24   0.3   43.3 151 b:2.7+1 1.4 4.8                   COEN
 WB2  eP      04:12:56.20  -0.3X  45.8 165 b:1.7+1 .90 5.0                   WB2 
      eP      04:12:56.37  -0.1X
 WRAB eP      04:12:56.22  -0.2   45.8 165 b:1.6+1 .95 5.0                   WRAB
 BRVK eP      04:13:16.26   0.5   48.3 320 b:7.6+0 1.1 4.7                   BRVK
 AS01 eP      04:13:23.39  -0.3   49.3 167                                   AS01
 AS31 eP      04:13:24.30   0.6X  49.3 167 b:2.7+0 1.0 4.2                   AS31
 CTAO eP      04:13:30.44   1.5   50.0 151 b:1.1+1 1.2 4.7                   CTAO
 ABKAReP      04:13:59.70  -0.2   54.2 314 b:6.0+0 .95 4.6                   ABKA
 NWAO eP      04:14:24.49  -0.3   57.7 186 b:2.4+1 1.0 5.2                   NWAO
 RES  eP      04:16:30.17  -0.8   77.8  10 b:4.0+0 1.1 4.4                   RES 
 B08A eP      04:17:26.02   0.0   88.3  36 b:9.2+0 1.1 5.0                   B08A
 NEW  eP      04:17:31.84   0.0   89.5  35                                   NEW 



 Generated 2013 APR 19 at 04:22 UTC

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