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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     19 JUL 2007  (200)

     ot  = 14:11:12.86   +/-   3.46              SOUTHWESTERN RYUKYU ISL., JAPAN 
     lat =      24.504   +/-   15.7
     lon =     125.078   +/-   12.0              MAGNITUDE 4.4 (GS)       
     dep =        27.9   +/-   24.9   

     90 km (55 miles) E of Ishigaki-jima, Ryukyu Islands, Japan (pop 45,000)
     320 km (200 miles) SW of Naha, Okinawa, Japan
     325 km (205 miles) E of Su-ao, Taiwan
     1875 km (1160 miles) SW of TOKYO, Japan

     nph =   12 of  14    se = 0.94    FE=246                            B   

     error ellipse = (285.2, 77.9, 39.4;152.2,  8.3, 26.8; 61.0,  8.8, 13.4)

 mb = 4.4 (  8)  ML = 3.6 (  3)  mblg = 3.4 (  3)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 NACB ePn     14:11:59.61  -1.7    3.2 265 d:9.6+1     4.3X L:2.6-1 .35 3.7  NACB
      eSn     14:12:28.62  S res =  -9.9X  g:1.2-1 .70 3.4 
 TATO ePn     14:12:04.00   1.3    3.3 279 d:8.0+1     4.2X L:1.5-1 .65 3.5  TATO
                                           g:8.4-2 .65 3.3 
 YHNB ePn     14:12:04.13   0.3    3.4 274 d:1.2+2     4.6X L:2.3-1 .40 3.7  YHNB
                                           g:1.9-1 .85 3.6 
 MAJO qPn     14:15:01.99   0.0   16.5  40 b:4.1+0 .61 3.7                   MAJO
 KSM  qP      14:16:52.76   0.3   27.0 214                                   KSM 
 KURK eP      14:19:18.02  -1.0   44.2 319 b:3.7+0 .95 4.2                   KURK
 TKM2 eP      14:19:21.68   0.4   44.4 307 b:3.1+0 .78 4.2                   TKM2
 AML  qP      14:19:32.36   0.5   45.7 306 b:1.8+0 .76 4.1                   AML 
 KBL  qP      14:19:58.80  -0.5   49.2 295 b:6.4+0 .78 4.7                   KBL 
 ARU  qP      14:20:55.46  -0.4   57.0 323 b:3.5+0 .60 4.6                   ARU 
 KIV  eP      14:22:11.19   0.6   68.1 310 b:1.6+1 .89 5.1                   KIV 
 OBN  qP      14:22:18.37   0.0   69.4 322 b:1.1+1 .65 5.1                   OBN 
 INK  qP      14:22:33.82   2.7X  71.6  23 b:5.0+1 .70 5.7X                  INK 



 Generated 2007 JUL 20 at 14:11 UTC

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

 


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