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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     21 MAR 2008  ( 81)

     ot  = 20:36:14.29   +/-   0.76              CENTRAL EAST PACIFIC RISE       
     lat =      -8.700   +/-   12.6
     lon =    -109.517   +/-   16.3              MAGNITUDE 4.7 (GS)       
     dep =        10.0  (geophysicist)

     3360 km (2080 miles) WSW of Guayaquil, Ecuador

     nph =   43 of  62    se = 1.31    FE=694                            B   

     error ellipse = ( 56.3,  0.0, 24.6;146.3,  0.0, 11.1;  0.0,  0.0,  0.0)

 mb = 4.7 ( 29)  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
 PAYG qP      20:40:53.06  -2.3X  20.7  68 b:4.2+1 1.1 4.7                   PAYG
 JTS  qP      20:42:22.43  -8.8X  30.9  53 b:3.9+1 1.1 5.2                   JTS 
 CMIG P       20:42:22.45   4.2X  29.4  29                                   CMIG
      LR      20:50:29.32                                  
 TGUH qP      20:42:36.28  -1.2   31.6  45 b:2.8+1 .91 5.2                   TGUH
 OTAV eP      20:42:43.22  -0.2   32.2  76 b:1.8+1 1.6 4.7                   OTAV
 NNA  eP      20:42:51.88   8.1X  32.3  99 b:1.7+1 .91 5.0                   NNA 
 TEIG eP      20:43:14.64   2.9X  35.5  36 b:7.8+1 1.2 5.4                   TEIG
 TXAR P       20:43:36.38   1.7   38.2   8                                   TXAR
      LR      20:56:32.28                                  
 TUC  eP      20:43:57.37   1.3   40.8 358 b:3.0+1 2.2 4.6                   TUC 
 LVC  qP      20:43:59.82  -1.0   41.3 114 b:2.7+1 1.4 4.8                   LVC 
 LPAZ P       20:44:01.80   2.8X  41.0 105                                   LPAZ
      LR      20:55:59.64                                  
 GLA  eP      20:44:03.17  -1.3   41.8 353 b:3.4+1 1.7 4.8                   GLA 
 PFO  qP      20:44:08.65  -2.1   42.6 351 b:6.7+0 1.0 4.3                   PFO 
 SDV  eP      20:44:09.69  -0.7   42.5  67 b:1.1+1 .95 4.6                   SDV 
 BNM  qP      20:44:12.09   0.3   42.7   4 b:2.3+1 1.9 4.6                   BNM 
 LAZ  eP      20:44:15.81   2.2X  42.9   3 b:1.4+1 1.6 4.4                   LAZ 
      e       20:44:26.38   8.4X
 ANMO eP      20:44:17.91  -0.4   43.5   4 b:5.0+0 1.1 4.2                   ANMO
 MWC  eP      20:44:18.09   0.3   43.4 350 b:2.4+1 1.2 4.8                   MWC 
 WUAZ eP      20:44:24.04   1.7   44.0 358                                   WUAZ
 GSC  eP      20:44:25.81   1.3   44.3 351 b:7.6+0 .90 4.6                   GSC 
 ISA  eP      20:44:28.94  -0.6   44.9 350 b:1.5+1 1.4 4.7                   ISA 
 CFAA P       20:44:29.23   2.4   44.6 127                                   CFAA
 MIAR qP      20:44:31.64  -3.0   45.6  19                                   MIAR
 SDCO qP      20:44:34.76  -6.3X  46.4   4 b:1.1+1 1.4 4.7                   SDCO
 CCUT qP      20:44:39.46   0.1   46.1 356 b:4.2+1 2.1 5.1                   CCUT
 ARUT eP      20:44:42.94   1.8   46.4 356 b:2.3+1 1.5 5.0                   ARUT
 PLCA P       20:44:44.50  -1.5   47.0 139                                   PLCA
      LR      20:59:34.06                                  
 CMB  eP      20:44:50.95   0.6   47.6 348 b:1.0+1 1.3 4.7                   CMB 
 NVAR P       20:44:51.59   0.9   47.6 351                                   NVAR
 SIV  P       20:44:52.92   0.6   47.8 104                                   SIV 
 ELK  qP      20:45:03.93  -1.2   49.5 354 b:1.7+1 1.4 4.8                   ELK 
 WDC  qP      20:45:12.53   0.0   50.5 347 b:1.6+1 1.5 4.7                   WDC 
 PDAR P       20:45:18.45   0.2   51.2 360                                   PDAR
      LR      21:04:18.33                                  
 MOD  eP      20:45:20.08   1.1   51.3 350 b:2.0+1 1.4 4.9                   MOD 
 SCIA qP      20:45:28.28   0.5   52.5  15 b:3.0+1 .73 5.3                   SCIA
 RSSD eP      20:45:29.58  -0.5   52.8   5 b:9.4+0 1.5 4.5                   RSSD
 NEW  eP      20:46:00.20  -0.7   57.1 354 b:8.6+0 1.3 4.6                   NEW 
 ULM  P       20:46:19.85  -0.4   59.9  10                                   ULM 
      LR      21:10:27.43                                  
 FCC  eP      20:47:14.41  -1.4   68.4   9 b:5.8-1 1.5 3.5X                  FCC 
 DLBC qP      20:47:18.53  -0.9   68.9 349                                   DLBC
 YKA  P       20:47:31.69  -0.7   71.1 358                                   YKA 
      LR      21:15:49.52                                  
 SCHQ P       20:47:44.15   2.0   72.7  24                                   SCHQ
      LR      21:17:49.90                                  
 INK  eP      20:48:14.52  -1.7   78.7 351 b:1.0+1 1.4 4.7                   INK 
 FRB  P       20:48:16.77   0.8   78.6  17                                   FRB 
 RES  qP      20:48:43.89   1.0   83.7   4 b:2.9+0 1.1 4.4                   RES 
 AKASGPKP     20:55:18.52   1.7  126.1  31                                   AKAS
 MLR  PKP     20:55:21.15   2.0  127.0  38                                   MLR 
 SONM PKP     20:55:27.82   2.0X 130.6 329                                   SONM
 BVAR PKP     20:55:34.31  -1.0  135.8   0                                   BVAR
 AKTK PKP     20:55:38.00   0.2  137.1  12                                   AKTK
 KURK PKP     20:55:38.92   0.3  137.6 352                                   KURK
 CMAR PKPbc   20:56:05.70  -2.2  150.7 292                                   CMAR
      PKPab   20:56:12.35  -2.5X



 Generated 2008 APR  3 at 21:19 UTC

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


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