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Earthquake Hazards Program
Phase Data

Explanation of Parameters


      1 MAY 2009  (121)

     ot  = 01:33:58.86   +/-   1.47              NEW MEXICO                      
     lat =      36.851   +/-    2.4
     lon =    -104.784   +/-    2.3              MAGNITUDE 3.5 (GS)       
     dep =         5.0  (geophysicist)

     30 km (20 miles) W of Raton, New Mexico (pop 7,200)
     45 km (25 miles) SW of Trinidad, Colorado (pop 9,000)
     85 km (55 miles) S of Walsenburg, Colorado (pop 4,100)
     165 km (105 miles) NE of SANTA FE, New Mexico

     nph =   25 of  39    se = 0.73    FE=496                            A   

     error ellipse = ( 39.0,  0.0,  3.4;129.0,  0.0,  2.8;  0.0,  0.0,  0.0)

 mb = 0.0 (  0)  ML = 3.5 ( 44)  mblg = 2.7 (109)  md = 3.3 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 SDCO ePn     01:34:21.58   0.9    1.1 327 d:3.1+2     3.3  L:9.0-2 .15 2.1  SDCO
      eSb     01:34:34.55  S res =   0.4   g:4.0-2 .88 2.5 
 ANMO ePg     01:34:43.70   0.1    2.3 216 L:6.0-2 .40 2.5  g:3.0-2 .70 2.7  ANMO
      eSg     01:35:14.42  S res =   0.5 
 SMCO ePb     01:34:51.70   0.5    2.9 323 L:8.0-2 .52 2.9  g:1.0-2 .70 2.1  SMCO
 LENM ePn     01:34:52.70   2.5X   3.2 214                                   LENM
      eSg     01:35:40.35  S res =  -2.0 
 ISCO ePb     01:34:53.92   0.7    3.0 347 L:2.0-2 .65 2.4  g:4.0-2 1.0 2.9  ISCO
      eSg     01:35:33.38  S res =  -2.4X
 MVCO ePg     01:34:56.04  -0.2    3.0 277 L:1.4-1 .63 3.2  g:8.0-2 .80 3.2  MVCO
      eSg     01:35:32.62  S res =  -2.4X
 LPM  ePg     01:34:56.25   0.9    3.0 211                                   LPM 
      eSg     01:35:32.59  S res =  -0.9 
 AMTX ePg     01:34:59.81  -0.3    3.2 127 L:3.4-1 .40 3.6  g:5.0-2 .75 3.0  AMTX
      eSg     01:35:41.64  S res =   0.1 
 PV04 ePn     01:35:02.57   6.9X   3.6 296                                   PV04
 CBKS ePb     01:35:12.70  -4.8X   4.5  62 L:1.9-1 .52 3.8  g:3.0-2 .75 3.0  CBKS
      eSg     01:36:23.96  S res =   2.2X
 SRU  ePb     01:35:22.75  -5.3X   5.1 298 g:2.0-2 .89 3.0                   SRU 
      eSg     01:36:38.59  S res =  -2.9X
 TMUT ePg     01:35:23.39 -23.2X   5.6 297 L:2.0-2 .70 3.2  g:3.0-2 1.0 3.1  TMUT
      eSg     01:36:57.25  S res =  -2.3X
 PHWY ePg     01:35:24.60   0.0    4.5 353 L:7.0-2 .85 3.3  g:2.0-2 .80 2.7  PHWY
 GDL2 ePg     01:35:28.36   0.3    4.7 175                                   GDL2
 MSU  ePg     01:35:30.08 -25.5X   6.1 288                                   MSU 
      eSg     01:37:14.81  S res =   0.3 
 MVU  ePg     01:35:55.40  -0.7    6.1 287 L:2.0-2 .90 3.3  g:0.0+0 1.0 2.3  MVU 
 DAU  ePg     01:35:57.15  -0.3    6.2 307                                   DAU 
 JLU  ePg     01:36:01.33  -0.4    6.4 307 L:9.9-3 1.0 3.1  g:1.0-2 1.1 2.4  JLU 
 KSU1 ePg     01:36:08.89  -0.9    6.8  68 L:7.0-2 .98 4.1  g:2.0-2 .95 3.1  KSU1
 CCUT ePg     01:36:09.75  -1.0    6.9 278 g:0.0+0 .89 2.3                   CCUT
 TUC  ePg     01:36:09.90   2.5X   6.7 229                                   TUC 
 BW06 ePg     01:36:11.88  -0.2    7.0 329 L:1.0-2 .85 3.1  g:0.0+0 .88 2.0  BW06
 HWUT ePg     01:36:15.09   0.5    7.1 314 L:1.0-2 1.0 3.3  g:0.0+0 1.2 2.4  HWUT
 DUG  ePg     01:36:17.64   2.3X   7.1 300 L:9.9-3 2.6 3.2  g:0.0+0 1.0 2.1  DUG 
 LOHW ePg     01:36:34.05   0.4    8.1 328 L:9.9-3 .95 3.4  g:0.0+0 1.0 2.3  LOHW
 SNOW ePg     01:36:36.44   3.8X   8.0 327 L:2.0-2 2.3 3.9  g:1.0-2 1.2 2.6  SNOW
 IMW  ePg     01:36:40.05  -0.8    8.5 328 L:9.9-3 1.1 3.7  g:0.0+0 .70 2.1  IMW 
 RSSD eSg     01:37:54.09   1.4    7.3   4 g:3.0-2 1.2 3.3                   RSSD



 Generated 2009 MAY  1 at 01:45 UTC

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


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