Phase Data

Explanation of Parameters


     18 FEB 2011  ( 49)

     ot  = 04:59:49.80   +/-   0.19              ARKANSAS                        
     lat =      35.251   +/-    2.8
     lon =     -92.409   +/-    1.6              MAGNITUDE 4.0 (GS)       
     dep =         5.0  (geophysicist)

     20 km (10 miles) N of Conway, Arkansas (pop 43,000)
     55 km (35 miles) N of LITTLE ROCK, Arkansas (pop 183,000)
     60 km (40 miles) W of Searcy, Arkansas (pop 18,000)
     65 km (40 miles) E of Russellville, Arkansas (pop 23,000)
 
     Felt in the Greenbrier area.

     nph =   65 of 177    se = 0.80    FE=502                            A   

     error ellipse = (172.9,  0.0,  3.7; 82.9,  0.0,  2.1;  0.0,  0.0,  0.0)

 mb = 0.0 (  0)  ML = 0.0 (  0)  mblg = 4.0 ( 54)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 UALR ePg     04:59:59.26   0.3    0.5 174                                   UALR
      eSg     05:00:05.58  S res =   0.4X
 MIAR ePg     05:00:11.89  -0.7    1.2 234 g:1.7-1 .85 3.1                   MIAR
      eSg     05:00:27.48  S res =  -0.5X
 HBAR ePn     05:00:16.22  -1.6    1.5  78                                   HBAR
 QUAR ePn     05:00:16.93  -1.4    1.5  74                                   QUAR
 SFTN ePn     05:00:23.44  -0.2    2.0  86                                   SFTN
      eSn     05:00:49.70  S res =   1.1X
 MET  ePn     05:00:23.82  -0.8    2.0  93 d:9.4+1     3.9X g:1.6+0 .82 4.3  MET 
      ePg     05:00:27.98  -0.8X
      eSn     05:00:49.42  S res =  -1.0X
      eSb     05:00:52.37  S res =  -0.4X
      eSg     05:00:54.21  S res =  -0.9X
 DLAR ePn     05:00:25.80   1.1    2.0  73                                   DLAR
      eSn     05:00:53.39  S res =   2.9X
 GNAR ePn     05:00:26.14   0.9    2.1  69                                   GNAR
      eSn     05:00:53.64  S res =   2.2X
 PBMO ePn     05:00:27.77   0.6    2.2  46 g:2.3+0 1.1 4.4                   PBMO
 PVMO ePn     05:00:30.48  -0.5    2.5  61                                   PVMO
      eSn     05:01:02.13  S res =   0.4X
      eSg     05:01:08.03  S res =  -1.7X
 CWPT ePn     05:00:30.62   1.0    2.4  71                                   CWPT
 EBZ  ePn     05:00:31.22   0.0    2.5  92                                   EBZ 
 WADM ePn     05:00:31.99   2.3    2.4  62                                   WADM
      eSn     05:01:05.02  S res =   5.6X
 OXF  ePn     05:00:32.11   0.0    2.6 106 g:9.8-1 .95 4.1                   OXF 
      eSn     05:01:03.50  S res =  -0.3X
 HALT ePn     05:00:32.33   0.0    2.6  74                                   HALT
 PARMOePn     05:00:32.69   0.5    2.6  56                                   PARM
      ePb     05:00:34.78  -1.7X
 RELT ePn     05:00:34.04   0.9    2.6  72                                   RELT
      ePb     05:00:36.91  -0.8X
 GLAT ePn     05:00:34.95   0.6    2.7  67                                   GLAT
 GLST ePn     05:00:35.06   0.7    2.7  67                                   GLST
 TUL1 ePn     05:00:37.04   1.3    2.8 284 g:2.9-1 .75 3.7                   TUL1
      eSg     05:01:19.36  S res =  -1.5X
 UTMT ePn     05:00:38.74  -0.4    3.1  68 g:3.6-1 .75 3.9                   UTMT
      ePg     05:00:47.21  -1.6X
      eSg     05:01:26.42  S res =  -2.3X
 VBMS ePn     05:00:43.82   0.2    3.4 152 g:1.4-1 .88 3.4                   VBMS
 SIUC ePn     05:00:46.74   1.1    3.6  45 g:4.6-1 .75 4.0                   SIUC
      eSn     05:01:27.88  S res =  -0.2X
      eSg     05:01:40.77  S res =  -3.3X
 SLM  ePn     05:00:48.83  -0.2    3.8  27 d:2.3+2     5.3X g:1.3+0 1.1 4.4  SLM 
      ePg     05:00:58.68  -3.9X
      eSn     05:01:33.58  S res =  -0.5X
      eSg     05:01:46.86  S res =  -5.0X
 NATX ePn     05:00:51.32   0.1    4.0 209 d:1.4+2     5.0X g:2.0-1 .77 3.7  NATX
      eSn     05:01:37.65  S res =  -0.3X
 V34A ePn     05:00:55.56   1.0    4.2 279 g:1.3-1 .90 3.5                   V34A
      ePb     05:01:04.15  -0.1X
      eSn     05:01:44.36  S res =   0.2X
      eSg     05:02:01.69  S res =  -3.2X
 U34A ePn     05:00:57.04   0.8    4.3 287 g:5.1-1 1.2 4.0                   U34A
      ePb     05:01:06.25  -0.1X
      ePg     05:01:11.67  -1.1X
      eSn     05:01:46.84  S res =  -0.3X
      eSg     05:02:05.38  S res =  -3.5X
 W34A ePn     05:00:58.29   1.1    4.4 271 g:1.7-1 .80 3.7                   W34A
      ePg     05:01:11.12  -2.8X
      eSn     05:01:47.43  S res =  -1.3X
      eSg     05:02:08.36  S res =  -2.5X
 USIN ePn     05:01:01.64   0.6    4.7  53 g:6.1-1 1.3 4.1                   USIN
      ePg     05:01:15.56  -3.9X
      eSn     05:01:56.59  S res =   0.8X
      eSg     05:02:13.69  S res =  -6.4X
 OLIL ePn     05:01:03.47  -0.6    4.9  44 g:6.1-1 1.0 4.2                   OLIL
      ePg     05:01:18.48  -5.1X
      eSg     05:02:22.59  S res =  -4.5X
 LRAL ePn     05:01:05.20  -0.3    5.0 115                                   LRAL
      eSn     05:02:02.95  S res =  -0.8X
      eSg     05:02:22.40  S res =  -8.1X
 KSU1 ePn     05:01:07.21   0.3    5.1 320 g:5.6-1 .85 4.3                   KSU1
      ePg     05:01:23.32  -4.2X
      eSg     05:02:28.89  S res =  -4.7X
 WMOK ePn     05:01:09.56   0.5    5.3 266 g:1.6-1 .85 3.8                   WMOK
      ePg     05:01:24.88  -5.6X
      eSn     05:02:09.29  S res =  -0.7X
      eSg     05:02:33.65  S res =  -4.9X
 SWET ePn     05:01:09.62  -0.1    5.3  89 g:2.1-1 .80 3.9                   SWET
 WHTX ePn     05:01:10.76   0.9    5.3 234 g:5.0-2 .93 3.2                   WHTX
 WCI  ePn     05:01:15.84   0.2    5.7  57 g:1.9-1 .70 4.0                   WCI 
      ePg     05:01:33.92  -5.8X
      eSn     05:02:22.06  S res =   0.1X
      eSb     05:02:39.04  S res =  -0.5X
      eSg     05:02:47.19  S res =  -6.9X
 HDIL ePn     05:01:16.71  -0.3    5.8  24 g:7.1-1 .90 4.5                   HDIL
      ePg     05:01:35.63  -6.0X
      eSn     05:02:23.77  S res =  -0.6X
      eSg     05:02:49.65  S res =  -7.7X
 BLO  ePn     05:01:20.74  -0.1    6.1  48 g:3.8-1 .88 4.2                   BLO 
      eSn     05:02:28.14  S res =  -3.0X
      eSg     05:02:57.17  S res =  -8.9X
 CPCT ePn     05:01:25.03  -0.4    6.4  86                                   CPCT
 ABTX ePn     05:01:26.84  -0.1    6.6 248 g:6.0-2 .88 3.5                   ABTX
      ePg     05:01:50.89  -4.5X
      eSn     05:02:42.25  S res =   0.1X
      eSg     05:03:14.06  S res =  -6.3X
 SFIN ePn     05:01:27.94   0.2    6.6  38 g:4.5-1 .88 4.4                   SFIN
      eSn     05:02:44.20  S res =   0.6X
      eSg     05:03:12.36  S res = -10.1X
 SCIA ePn     05:01:28.26  -0.2    6.7 355 g:2.9-1 .75 4.3                   SCIA
      ePg     05:01:48.89  -8.8X
      eSg     05:03:17.92  S res =  -6.2X
 CBKS ePn     05:01:31.50   0.5    6.9 303 g:2.6-1 .95 4.1                   CBKS
      ePg     05:01:55.84  -5.3X
      eSg     05:03:27.06  S res =  -2.8X
 TKL  ePn     05:01:33.52  -0.3    7.1  84 g:1.7-1 .90 4.0                   TKL 
 TZTN ePn     05:01:38.00   0.8    7.3  77 d:2.8+1     4.9X g:1.9-1 .83 4.1  TZTN
      eSn     05:02:59.96  S res =  -0.6X
      eSg     05:03:38.94  S res =  -5.4X
 GOGA ePn     05:01:40.77  -0.7    7.6 101 g:1.4-1 .80 4.0                   GOGA
      ePg     05:02:06.84  -8.9X
      eSg     05:03:45.21  S res =  -9.3X
 BGNE ePn     05:01:41.07  -0.5    7.6 325 g:5.8-1 1.2 4.4                   BGNE
      ePg     05:02:08.89  -6.9X
      eSg     05:03:48.32  S res =  -6.2X
 AMTX ePn     05:01:41.47   0.0    7.6 270 g:1.2-1 .77 4.0                   AMTX
      ePg     05:02:09.90  -5.7X
      eSn     05:03:06.70  S res =  -1.5X
 JFWS ePn     05:01:43.60  -0.8    7.8  12 g:2.0-1 .93 4.1                   JFWS
      ePg     05:02:12.03  -7.8X
      eSg     05:03:51.18  S res = -10.1X
 JCT  ePn     05:01:43.82  -0.6    7.8 235 g:4.0-2 .77 3.5                   JCT 
      eSn     05:03:12.50  S res =  -1.0X
 TIGA ePn     05:01:51.19   0.4    8.3 115 g:1.7-1 .95 4.1                   TIGA
      ePg     05:02:25.70  -3.0X
      eSn     05:03:23.09  S res =  -1.8X
      eSg     05:04:04.55  S res = -11.7X
 MSTX ePn     05:01:55.22  -0.4    8.6 264 g:8.0-2 1.1 3.7                   MSTX
 ACSO ePn     05:01:58.68  -1.3    9.0  54 d:3.9+1     5.8X g:1.0-1 .80 4.0  ACSO
      eSn     05:03:33.92  S res =  -7.4X
      eLg     05:04:27.92
 KSCO ePn     05:02:00.22  -0.1    9.0 298                                   KSCO
      eLg     05:04:34.77
 ECSD ePn     05:02:00.99  -0.4    9.1 340 g:6.0-2 .85 3.7                   ECSD
      eSn     05:03:41.96  S res =  -1.9X
      eLg     05:04:29.88
 OGNE ePn     05:02:06.69  -0.3    9.5 310 g:1.9-1 .75 4.3                   OGNE
      eLg     05:04:49.47
 BLA  ePn     05:02:11.66  -0.9    9.9  75 d:2.4+1     5.7X g:1.0-1 .82 4.0  BLA 
      eSn     05:04:02.00  S res =  -1.9X
      eLg     05:05:06.24
 T25A ePn     05:02:12.37  -0.4    9.9 284 g:2.5-1 1.0 4.3                   T25A
 SDCO ePn     05:02:25.96   0.2   10.8 287                                   SDCO
      eLg     05:05:29.20
 TX31 ePn     05:02:29.45  -1.3   11.2 241                                   TX31
 MNTX ePn     05:02:32.40  -0.9   11.4 256                                   MNTX
      eSn     05:04:36.65  S res =  -4.4X
 ISCO ePn     05:02:33.90   0.0   11.4 297                                   ISCO
      eLg     05:05:49.50
 N23A ePn     05:02:43.52   1.0   12.1 302                                   N23A
 LAO  ePn     05:03:26.94  -1.4   15.4 322                                   LAO 
      eLg     05:07:59.69
 YMS  ePn     05:03:41.19  -1.9   16.6 308                                   YMS 
      eSn     05:06:54.79  S res =   7.5X
 YPP  ePn     05:03:50.35   5.0X  16.7 308                                   YPP 
      eSn     05:06:54.89  S res =   3.2X
      eS      05:07:00.49  S res =  -2.5X
 KMSC eLg     05:04:10.48  129.X   9.1  88 d:5.3+1     6.1X g:1.5-1 1.0 4.1  KMSC
 AAM  eLg     05:04:52.68  161.X   9.8  42 d:2.2+1     5.6X g:1.8-1 1.0 4.2  AAM 
 NHSC eLg     05:04:58.78  159.X  10.4  98 g:4.9-2 .78 3.8                   NHSC
 COWI eLg     05:05:36.10  186.X  11.1  12 g:1.4-1 1.0 4.2                   COWI
 GLMI eLg     05:05:43.26  191.X  11.3  30 g:4.1-1 .93 4.7                   GLMI
 SSPA eLg     05:06:24.77  214.X  12.7  61                                   SSPA
 EYMN eLg     05:06:25.70  214.X  12.7   3 g:7.4-2 1.0 4.0                   EYMN
 MVCO eLg     05:06:40.50  223.X  13.1 283                                   MVCO
 K22A eLg     05:06:48.79  230.X  13.2 308                                   K22A
 PV01 eLg     05:06:50.32  231.X  13.3 287                                   PV01
 BW06 eLg     05:07:55.03  268.X  15.3 305 g:2.5-2 .95 3.7                   BW06
 DGMT eLg     05:07:56.35  263.X  15.8 330 g:3.8-2 1.2 3.8                   DGMT
 RLMT eLg     05:08:19.13  281.X  16.2 313 g:3.9-2 1.1 3.9                   RLMT
 REDW eLg     05:08:25.08  284.X  16.4 305 g:1.8-2 1.1 3.5                   REDW
 LOHW eLg     05:08:29.25  289.X  16.3 306 g:1.5-2 1.0 3.5                   LOHW
 SNOW eLg     05:08:30.24  289.X  16.4 306 g:2.3-2 .98 3.7                   SNOW
 IMW  eLg     05:08:34.53  290.X  16.7 307 g:1.5-2 1.0 3.5                   IMW 
 FLWY eLg     05:08:45.74  302.X  16.6 308 g:4.5-2 1.2 3.9                   FLWY



 Generated 2011 FEB 18 at 06:40 UTC

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