Phase Data

Explanation of Parameters


     23 APR 2013  (113)

     ot  = 21:15:27.71   +/-   1.40              ECUADOR                         
     lat =      -1.590   +/-   12.6
     lon =     -77.720   +/-   21.6              MAGNITUDE 4.3 (GS)       
     dep =       166.3   +/-    5.4   

     102 km (63 miles) E of Riobamba, Ecuador (pop 124,000)
     107 km (66 miles) ESE of Ambato, Ecuador (pop 154,000)
     175 km (109 miles) SSE of QUITO, Ecuador
     200 km (124 miles) NE of Cuenca, Ecuador

     nph =   27 of  45    se = 0.69    FE=107                            A   

     error ellipse = (250.0,  1.0, 34.8;159.0,  2.0, 16.4; 20.0, 87.0,  8.1)

 mb = 4.3 ( 37)  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
 OTAV ePn     21:16:02.88  -1.0    2.0 338                                   OTAV
 NNA  ePn     21:17:51.50  -0.9   10.4 175                                   NNA 
 SDV  ePn     21:18:22.56   1.4   12.6  34                                   SDV 
 LPAZ eP      21:19:19.65  -0.3   17.4 148 b:7.4+0 .80 4.1                   LPAZ
 MNMC eP      21:19:38.74  -0.1   19.2 156 b:4.3+1 1.2 4.7                   MNMC
 PB11 eP      21:19:44.49  -0.1   19.7 157 b:1.3+1 .80 4.4                   PB11
 MTDJ eP      21:19:46.35   2.0   19.7   1 b:6.9+1 1.3 4.9                   MTDJ
 GO01 eP      21:19:46.66   0.6   19.8 156 b:1.3+1 .75 4.5                   GO01
 PB01 eP      21:19:58.85   1.2   20.9 158 b:1.3+1 1.0 4.3                   PB01
 PLCA eP      21:22:41.90  -0.3   39.5 171 b:5.5+0 .80 4.3                   PLCA
 ANMO eP      21:23:29.22   0.6   45.2 326 b:7.7+0 .80 4.3                   ANMO
 TUC  eP      21:23:35.08   0.5   46.0 320 b:5.2+0 .85 4.1                   TUC 
 SDCO eP      21:23:41.22   0.0   46.8 330 b:6.1+0 .85 4.2                   SDCO
 X16A eP      21:23:49.57   0.9X  47.8 322 b:2.8+0 .65 4.0                   X16A
 WUAZ eP      21:23:54.29   0.4   48.5 323 b:9.2+0 1.1 4.3                   WUAZ
 PV02 eP      21:23:56.98   0.2   48.9 327 b:6.6+0 .82 4.3                   PV02
 PV13 eP      21:23:57.58   0.7X  48.9 327 b:1.1+1 .90 4.5                   PV13
 PV05 eP      21:23:57.98   0.5X  48.9 327 b:7.8+0 .86 4.4                   PV05
 PV03 eP      21:23:58.03   0.5X  49.0 327 b:8.0+0 .94 4.3                   PV03
 PV17 eP      21:23:58.93   0.8X  49.0 327 b:2.6+1 .72 5.0                   PV17
 U15A eP      21:24:02.85   0.0   49.6 323 b:4.0+0 1.1 4.0                   U15A
 W13A eP      21:24:04.62   0.9X  49.8 321 b:4.1+0 .75 4.2                   W13A
 SRU  eP      21:24:09.49   0.5X  50.5 327 b:6.1+0 1.2 4.1                   SRU 
 TCUT eP      21:24:23.79   0.6X  52.4 328 b:1.5+1 .66 4.9                   TCUT
 PDAR eP      21:24:24.19  -0.9X  52.6 331                                   PDAR
 BGU  eP      21:24:28.15  -0.3   53.1 327 b:6.7+0 1.2 4.3                   BGU 
 LOHW eP      21:24:33.46   0.1X  53.8 331 b:2.2+0 .85 3.9                   LOHW
 FLWY eP      21:24:36.71   0.5X  54.2 331 b:1.1+1 1.3 4.4                   FLWY
 OMMB eP      21:24:38.85  -0.4   54.6 320 b:4.1+0 .88 4.2                   OMMB
 NV01 eP      21:24:39.55   0.2X  54.6 321                                   NV01
 GCMT eP      21:24:42.13   0.2X  55.0 333                                   GCMT
 HLID eP      21:24:47.40   0.4X  55.7 328 b:8.9+0 1.6 4.3                   HLID
 BOZ  eP      21:24:47.72   0.1X  55.8 332 b:4.8+0 1.0 4.3                   BOZ 
 HRY  eP      21:24:50.22  -3.6X  56.7 333                                   HRY 
 WVOR eP      21:24:58.26   0.1X  57.3 325 b:7.3+0 1.1 4.4                   WVOR
 ORV  eP      21:24:58.35   0.2   57.3 321 b:1.3+1 1.0 4.7                   ORV 
 I07A eP      21:25:08.84   0.1   58.8 326 b:3.5+0 .90 4.2                   I07A
 G08A eP      21:25:11.95   0.0X  59.3 327 b:5.9+0 .85 4.5                   G08A
 PINE eP      21:25:13.05  -0.2   59.4 325 b:9.2+0 .85 4.7                   PINE
 YMR  epP     21:25:25.48   6.4   54.8 331                                   YMR 
 LON  eP      21:25:27.38  -1.1   61.7 327 b:2.3+0 .75 4.2                   LON 
 INK  eP      21:27:15.22   0.1   79.4 342 b:4.4+0 .90 4.2                   INK 
 TOA0 eP      21:27:18.42  -1.2   80.1  77                                   TOA0
 IL1  eP      21:27:31.34  -1.0   82.7 336                                   IL1 
 TAM  eP      21:27:43.27   1.1   84.4  67 b:6.4+0 .90 4.4                   TAM 



 Generated 2013 APR 23 at 21:36 UTC

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