Phase Data

Explanation of Parameters


     18 APR 2013  (108)

     ot  = 08:19:57.06   +/-   2.15              SOUTHWESTERN RYUKYU ISL., JAPAN 
     lat =      24.855   +/-    8.4
     lon =     123.312   +/-   11.5              MAGNITUDE 4.8 (GS)       
     dep =        36.9   +/-    7.1   

     103 km (64 miles) WNW of Ishigaki-jima, Ryukyu Islands, Japan (pop 45,000)
     150 km (93 miles) E of Su'ao, Taiwan (pop 44,000)
     182 km (113 miles) E of TAIPEI, Taiwan
     1981 km (1230 miles) WSW of TOKYO, Japan

     nph =   29 of  30    se = 1.06    FE=246                            A   

     error ellipse = ( 97.0,  3.0, 17.7;189.0, 28.0, 13.5;  1.0, 61.0,  9.8)

 mb = 4.8 ( 20)  ML = 3.5 ( 18)  mblg = 3.4 (  9)  md = 3.9 (  4)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 YOJ  ePn     08:20:03.88  -3.5    0.5 215 d:9.9+1     3.3  L:2.2+1 1.5 4.1  YOJ 
 TATO ePn     08:20:22.31  -1.3    1.6 275 d:1.0+2     3.8  L:1.4+0 1.3 3.6  TATO
                                           g:1.1-1 .85 3.1 
 NACB ePn     08:20:23.50  -0.8    1.7 247 d:1.4+2     4.1  L:6.2-1 1.3 3.3  NACB
                                           g:3.7-1 1.2 3.7 
 YHNB ePn     08:20:24.68  -0.6    1.8 264 d:1.3+2     4.0  L:7.3-1 .80 3.4  YHNB
                                           g:1.7-1 .75 3.3 
 YULB ePn     08:20:32.23  -0.9    2.3 232 L:2.2-1 2.2 3.1  g:7.0-2 .95 3.1  YULB
 SSLB ePn     08:20:34.09   0.2    2.4 244 L:3.6-1 2.1 3.3                   SSLB
 TWG  ePn     08:20:41.62   1.1    2.9 226 L:9.9-1 2.1 4.0  g:3.3-1 1.1 3.8  TWG 
 TPUB ePn     08:20:42.24   1.5    2.9 238 L:2.5-1 1.3 3.4  g:1.6-1 1.0 3.5  TPUB
 JOW  ePn     08:21:07.39  -0.7    4.9  65 L:2.1-1 3.3 4.0  g:9.0-2 1.3 3.5  JOW 
 KS01 ePn     08:23:02.01   0.4   13.2  16                                   KS01
 KKM  eP      08:24:27.68   2.0   19.9 201 b:2.8+1 1.2 4.5                   KKM 
 CHTO eP      08:25:03.48   0.6   23.4 260 b:5.0+0 .95 4.0                   CHTO
 SBUM eP      08:25:15.76   0.8   24.7 207 b:1.8+1 1.3 4.5                   SBUM
 ULN  eP      08:25:30.47   0.9   26.3 335 b:9.7+0 1.3 4.2                   ULN 
 TLY  eP      08:26:09.16   0.7   30.7 336 b:1.7+1 1.5 4.6                   TLY 
 MTN  eP      08:27:11.72  -2.0   38.2 168 b:3.3+1 1.4 5.0                   MTN 
 MK01 eP      08:27:20.77  -1.0   39.2 315                                   MK01
 MK31 eP      08:27:21.67  -0.2   39.2 315 b:1.4+1 1.2 4.6                   MK31
 MAKZ eP      08:27:22.86  -0.7   39.4 315 b:2.4+1 1.3 4.8                   MAKZ
 NRN  eP      08:27:49.23   1.0   42.4 305 b:1.8+1 1.3 4.6                   NRN 
 KURK eP      08:27:50.86  -0.6   42.8 319 b:3.4+1 1.4 4.9                   KURK
 FITZ eP      08:27:51.03   0.0   42.8 177 b:2.7+1 1.4 4.8                   FITZ
 COEN eP      08:27:54.42   0.0   43.2 151 b:3.7+1 1.5 4.9                   COEN
 WRAB eP      08:28:15.89   0.5   45.8 165 b:2.5+1 1.0 5.1                   WRAB
 TIXI eP      08:28:22.60  -0.9   46.9   2 b:1.5+1 1.1 4.9                   TIXI
 BRVK eP      08:28:36.07   0.2   48.5 320 b:1.8+1 1.4 4.9                   BRVK
 AS01 eP      08:28:42.59  -0.1X  49.3 167                                   AS01
 CTAO eP      08:28:48.76   1.3   49.9 151 b:1.6+1 1.3 4.9                   CTAO
 ABKAReP      08:29:19.92  -0.2   54.4 314 b:9.2+0 1.1 4.7                   ABKA
 NWAO eP      08:29:44.57   0.2   57.8 186 b:5.2+1 1.1 5.5                   NWAO



 Generated 2013 APR 18 at 08:34 UTC

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