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Earthquake Activity


Phase Data

Explanation of Parameters

     25 MAY 2003  (145)

     ot  = 07:32:33.74   +/-   0.76              SOUTH DAKOTA
     lat =      43.098   +/-    8.5
     lon =    -101.747   +/-    7.9              MAGNITUDE 4.4 (GS)
     dep =         5.0  (geophysicist)

     65 km (40 miles) E of Pine Ridge, South Dakota (pop 2,000)
     85 km (50 miles) SSW of Kadoka, South Dakota (pop 700)
     90 km (55 miles) WSW of Mission, South Dakota (pop 700)
     180 km (110 miles) SW of PIERRE, South Dakota

     Felt (IV) at Kyle and Martin and (III) at Allen and Pine Ridge.
     Also felt (IV) at Gordon and (II) at Chadron and Rushville,
     Nebraska.

     nph =   19 of  90    se = 1.29        FE=462                      A

     error ellipse = ( 37.1,127.1,  0.0;  0.0,  0.0,  0.0; 12.0,  9.4,  0.0)

 mb = 3.9 (  5)  ML = 4.0 (  1)  mblg = 4.0 ( 28)  md = 5.5 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 RSSD ePn     07:33:08.50   0.4    2.0 302 d:6.2+2     5.5  L:2.7+0 .45 4.0  RSSD
      ePg     07:33:10.88   2.8X           g:3.8-1 .65 3.8
      eSg     07:33:31.71  23.6X
 CBKS ePn     07:33:45.75   1.0    4.5 160 d:4.1+2     6.1X L:1.2+0 .48 4.8X CBKS
      ePb     07:33:51.72   7.0X           g:3.4-1 .73 4.1
      ePg     07:34:00.28  15.5X
      eS      07:34:56.88  72.1X
 BW06 ePn     07:33:59.09  -2.9X   5.7 269 L:3.2-1 .75 4.5X g:2.0-1 .75 4.0  BW06
      eSg     07:35:25.48  83.5X
 KSU1 ePn     07:34:01.20   1.9    5.6 134 d:4.5+2     6.6X                  KSU1
 SDCO ePn     07:34:03.85  -2.7X   6.1 209 L:2.7-1 .85 4.5X g:1.9-1 .85 4.0  SDCO
      ePg     07:34:25.75  19.2X
      eS      07:35:39.10  92.6X
 LKWY ePn     07:34:08.36  -3.3X   6.4 286 d:2.6+2     6.5X L:9.8-2 .73 4.1X LKWY
      ePg     07:34:30.42  18.7X           g:6.1-2 .73 3.6X
      eSg     07:35:51.71  100.X
 RW3  ePn     07:34:12.36  -2.0X   6.6 225 d:3.7+2     6.8X                  RW3
      ePb     07:34:17.47   3.1X
      ePg     07:34:37.01  22.6X
 AHID ePn     07:34:14.35  -3.5X   6.9 270 d:3.2+2     6.8X L:1.5-1 .68 4.4X AHID
      ePg     07:34:38.86  21.0X           g:9.0-2 .68 3.8
 YMR  eP      07:34:15.56  -1.9X   6.8 286 d:3.0+2     6.8X                  YMR
 PV01 ePn     07:34:20.08  -2.0X   7.2 229                                   PV01
      ePb     07:34:25.68   3.6X
      ePg     07:34:46.11  24.0X
 TCUT eP      07:34:21.08  -4.9X   7.5 258                                   TCUT
 HWUT eP      07:34:21.56  -4.0X   7.4 262 d:4.5+2     7.3X L:2.0-1 .85 4.6X HWUT
                                           g:1.7-1 .98 4.0
 PV10 eP      07:34:22.01  -1.5X   7.3 232                                   PV10
 BOZ  ePn     07:34:22.04  -4.9X   7.5 293 d:4.6+2     7.4X L:1.1-1 .95 4.4X BOZ
                                           g:1.0-1 1.0 3.8
 DAU  ePn     07:34:23.31  -4.8X   7.6 253 d:3.4+2     7.2X                  DAU
 JLU  eP      07:34:24.54  -4.4X   7.7 254 d:3.6+2     7.2X                  JLU
      eS      07:36:23.47  114.X
 LCCM eP      07:34:25.52  -4.5X   7.7 294                                   LCCM
 CTU  eP      07:34:26.71  -4.6X   7.8 256 d:2.3+2     6.9X                  CTU
 MPU  eP      07:34:29.84  -4.2X   8.0 251 d:2.6+2     7.1X                  MPU
 HRY  eP      07:34:30.67  -3.1X   8.0 300                                   HRY
 SPUT eP      07:34:30.91  -4.7X   8.1 261 d:2.5+2     7.1X                  SPUT
 HVU  eP      07:34:32.76  -4.5X   8.3 265 d:2.7+2     7.2X                  HVU
 MCMT eP      07:34:34.95  -1.4X   8.2 286                                   MCMT
 BGU  eP      07:34:38.08  -4.9X   8.7 259 d:3.8+2     7.7X                  BGU
 DUG  eP      07:34:39.59  -4.8X   8.8 254 d:3.5+2     7.6X L:4.9-2 .88 4.2X DUG
                                           g:3.7-2 .88 3.5X
 JFWS eP      07:34:39.97   0.5X   8.4  87 L:4.4-1 .63 5.1X g:3.0-1 .90 4.4  JFWS
 WMOK eP      07:34:40.37  -2.3X   8.7 164 L:1.9-1 .55 4.8X g:1.2-1 .88 4.0  WMOK
 EYMN eP      07:34:42.32  -0.5X   8.7  52 L:1.7-1 .60 4.7X g:1.6-1 1.0 4.1  EYMN
 CHMT eP      07:34:43.59  -3.9X   9.0 299                                   CHMT
 ANMO ePn     07:34:46.01  -0.4X   8.9 206 d:4.5+2     7.9X L:4.6-2 .68 4.2X ANMO
      ePg     07:35:21.01  34.6X           g:2.9-2 .73 3.5X
 MSU  eP      07:34:46.06  -3.3X   9.1 243 d:3.4+2     7.8X                  MSU
 HLID eP      07:34:48.36  -2.5X   9.2 277 d:3.4+2     7.8X L:1.1-2 .78 3.7X HLID
                                           g:8.3-3 .85 2.9X
 MSO  ePn     07:34:48.44  -4.7X   9.4 298 d:4.6+2     8.1X L:2.2-2 .88 4.0X MSO
                                           g:1.7-2 .88 3.2X
 CCM  eP      07:34:51.95  -1.4X   9.4 119 d:5.1+2     8.2X L:2.3-1 .70 5.0X CCM
                                           g:1.5-1 .80 4.2
 BNM  qP      07:34:55.91  -1.5X   9.7 205 d:3.8+2     8.1X                  BNM
 ELK  eP      07:35:01.10  -4.7X  10.3 261 g:1.3-2 1.0 3.1X                  ELK
      eSg     07:37:49.50  163.X
 WALA eP      07:35:01.21  -4.7X  10.3 309 g:6.9-2 1.0 3.8                   WALA
      eSg     07:37:54.81  169.X
 CPRX qP      07:35:03.35  -0.5X  10.2 190                                   CPRX
 WUAZ ePn     07:35:05.23  -4.5X  10.6 228 g:5.3-2 .94 3.8                   WUAZ
      ePg     07:35:49.07  39.3X
      eSg     07:38:04.65  174.X
 MIAR eP      07:35:08.18  -1.8X  10.7 141 g:1.4-1 .65 4.3                   MIAR
      eS      07:37:07.66  117.X
 UALR eP      07:35:14.93  -0.8   11.1 136 g:2.6-1 .90 4.5                   UALR
 GDL2 qP      07:35:16.32   0.4   11.1 192                                   GDL2
 BLO  eP      07:35:29.60  -0.5   12.1 104 g:1.2-1 .85 4.2                   BLO
 JCT  eP      07:35:35.79  -1.9   12.7 172 g:1.4-1 1.0 4.3                   JCT
 WVT  ePn     07:35:36.75  -2.1   12.8 118 g:4.2-2 .95 3.8                   WVT
      eSn     07:38:07.53  148.X
      eLg     07:39:23.67  224.X
 OXF  eP      07:35:39.06  -1.0   12.9 128 g:1.1-1 1.0 4.2                   OXF
 AAM  eP      07:35:45.56  -0.6   13.3  87 g:5.8-2 .65 4.1                   AAM
 LTX  qPn     07:35:49.91  -2.9X  13.8 187 g:5.4-2 .85 4.0                   LTX
      ePg     07:36:47.61  54.8X
 ACSO ePn     07:36:00.65   1.5   14.3  95 g:5.1-2 .85 4.0                   ACSO
      eSn     07:38:30.94  151.X
      eLg     07:40:09.89  250.X
 SWET eP      07:36:03.15   0.8   14.6 117                                   SWET
 LRAL eP      07:36:12.68   0.2   15.3 126 g:3.3-2 1.0 3.8  b:3.2+0 .48 4.0  LRAL
 MYNC eP      07:36:19.47   0.5   15.8 115 g:3.2-2 .78 3.9  b:4.2+0 .55 3.8  MYNC
 MCWV eP      07:36:29.21  -1.8   16.8  94 g:7.9-2 1.0 4.2  b:8.0+0 .65 4.0  MCWV
      eLg     07:41:27.12  296.X
 TUC  ePg     07:36:36.67  55.9X  12.9 217 g:2.3-2 1.5 3.3X                  TUC
      eSg     07:39:16.44  215.X
 GOGA eP      07:36:37.83   0.6   17.3 118 g:3.8-2 1.0 3.9  b:7.8+0 .85 3.9  GOGA
      eLg     07:41:43.14  305.X
 BLA  eP      07:36:39.75   2.0   17.3 103 g:5.0-2 .93 4.1  b:1.9+1 .98 4.2  BLA
      eLg     07:41:51.01  313.X
 NCB  eP      07:37:09.01  -0.3   19.9  78 g:2.8-2 .98 3.9                   NCB
      eLg     07:43:06.74  357.X
 YKW3 eP      07:37:18.93  -0.3   20.9 343                                   YKW3



 Generated 2003 MAY 26 at 03:52 UTC

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