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Earthquake Hazards Program
Phase Data

Explanation of Parameters


      8 APR 2009  ( 98)

     ot  = 08:11:00.83   +/-   0.34              VANUATU                         
     lat =     -19.996   +/-    9.6
     lon =     168.027   +/-    5.8              MAGNITUDE 5.0 (GS)       
     dep =        41.2  (depth phases)

     140 km (85 miles) WSW of Isangel, Tanna, Vanuatu (pop 700)
     170 km (105 miles) N of Tadine, Loyalty Islands, New Caledonia
     250 km (155 miles) S of PORT-VILA, Efate, Vanuatu
     1740 km (1080 miles) ENE of BRISBANE, Queensland, Australia

     nph =   29 of  35    se = 0.82    FE=186                            A   

     error ellipse = (161.1,  0.0, 13.2; 71.1,  0.0,  6.6;  0.0,  0.0,  0.0)

 mb = 5.3 (  8)  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
 MSVF ePn     08:13:20.33   1.6    9.8  78                                   MSVF
 EIDS qPn     08:14:49.97   0.3   16.5 248                                   EIDS
 ARMA eP      08:15:09.18   0.0   18.1 232                                   ARMA
 CTAO eP      08:15:36.07   1.0   20.5 266 b:5.0+1 1.1 4.8                   CTAO
 PMG  eP      08:15:59.27  -0.2   22.7 295                                   PMG 
      epP     08:16:10.98  depth =  46.8 
 COEN eP      08:16:17.37   0.9   24.5 280 b:7.6+2 1.7 6.0                   COEN
 STKA eP      08:16:34.67   0.4   26.5 238                                   STKA
      epP     08:16:45.57  depth =  41.2 
 WRAB qP      08:17:21.22   1.0   31.6 264                                   WRAB
 AS31 eP      08:17:21.26  -0.8   31.8 257                                   AS31
 FITZ eP      08:18:32.20   0.0   40.0 265                                   FITZ
 MBWA eP      08:19:12.97  -0.3   45.1 260 b:2.2+1 1.1 4.9                   MBWA
 KKM  eP      08:20:44.11   0.2   57.1 291                                   KKM 
 KSM  eP      08:21:06.25  -0.5   60.4 284 b:2.0+1 .80 5.3                   KSM 
 JNU  eP      08:21:27.14  -0.7   63.6 326 b:1.6+1 .90 5.1                   JNU 
 QSPA eP      08:22:08.38  -0.1   70.1 180 b:1.1+2 2.8 5.4                   QSPA
 CM31 eP      08:22:54.06  -0.1   77.8 295                                   CM31
 CHTO eP      08:22:56.08   1.0   77.9 295                                   CHTO
 ULN  eP      08:23:40.93   0.0   86.8 324                                   ULN 
 KCPM eP      08:23:42.86   0.5   87.1  46 b:1.1+2 .92 6.1                   KCPM
 TNA  eP      08:23:43.75   1.4   87.2  10                                   TNA 
 BILL eP      08:23:44.38  -0.6   87.8 359                                   BILL
 SNAA eP      08:23:47.34  -0.7   88.4 183                                   SNAA
 WDC  eP      08:23:47.54  -0.1   88.2  46                                   WDC 
      epP     08:23:58.72  depth =  35.5 
 CMB  eP      08:23:48.69  -0.5   88.5  49                                   CMB 
 ISA  eP      08:23:50.29  -0.6   88.8  51                                   ISA 
 TUC  eP      08:24:12.05   0.0   93.4  57                                   TUC 
 EGMT P       08:24:33.27  -6.5X  99.6  42 b:1.1+1 .93 5.4                   EGMT
      e       08:24:41.35
 BNI  ePKPdf  08:30:40.96  -2.2  150.6 332                                   BNI 
 TUE  ePKPbc  08:30:42.14  -0.8  148.3 331                                   TUE 
 TIP  ePKPbc  08:30:43.76  -0.3  148.7 314                                   TIP 
 PAB  P       08:31:02.49   7.3X 159.4 343                                   PAB 



 Generated 2009 APR  8 at 08:49 UTC

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


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