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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     20 APR 2009  (110)

     ot  = 21:55:27.72   +/-   0.58              BANDA SEA                       
     lat =      -4.173   +/-    9.7
     lon =     129.731   +/-   18.4                                       
     dep =        35.0  (geophysicist)

     180 km (115 miles) ESE of Ambon, Moluccas, Indonesia
     405 km (255 miles) SSW of Sorong, Papua, Indonesia
     930 km (570 miles) N of DARWIN, Northern Territory, Australia
     2550 km (1590 miles) E of JAKARTA, Java, Indonesia

     nph =   13 of  18    se = 1.21    FE=280                            B   

     error ellipse = ( 68.2,  0.0, 25.9;158.2,  0.0,  9.1;  0.0,  0.0,  0.0)

 mb = 4.1 (  4)  ML = 0.0 (  0)  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
 FITZ ePn     21:58:49.07  -0.2   14.4 196 g:5.1-3 .88 3.0  b:3.9+0 .70 4.1X FITZ
      LR      22:04:04.84                                  
 WRA  Pn      21:59:10.10  -4.1X  16.3 164                                   WRA 
      Sn      22:02:10.45  S res =  -3.6X
 WRAB ePn     21:59:12.18  -1.9   16.3 164 g:1.6-2 1.2 3.4  b:1.6+1 1.2 4.0  WRAB
 AS31 eP      21:59:55.66   0.4   19.8 169                                   AS31
 ASAR P       21:59:55.97   0.7   19.8 169                                   ASAR
      S       22:03:39.00  S res =  -0.2X
 CTAO eP      22:00:25.15   0.0   22.6 136 g:5.5-3 .70 3.4  b:5.5+0 .70 4.1  CTAO
 CTA  P       22:00:26.37   1.2   22.6 136                                   CTA 
 KAPI LR      22:01:13.15         10.0 265                                   KAPI
 CMAR P       22:02:42.20   1.5   37.8 307                                   CMAR
 SONM P       22:04:58.31  -2.4   55.7 341                                   SONM
 ULN  eP      22:05:00.06   0.6   55.5 342 b:9.6-1 .50 4.1                   ULN 
 MK31 eP      22:06:09.19   0.2   65.7 326                                   MK31
 MKAR P       22:06:09.47   0.4   65.7 326                                   MKAR
 ZALV P       22:06:28.96  -0.2   68.9 333                                   ZALV
 KURK eP      22:06:35.33  -0.3   70.0 328 b:2.8+0 .75 4.4                   KURK



 Generated 2009 MAY  4 at 01:22 UTC

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


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