Phase Data

Explanation of Parameters


     22 FEB 2013  ( 53)

     ot  = 01:41:43.27   +/-   1.42              FOX ISLANDS, ALEUTIAN ISLANDS   
     lat =      51.967   +/-   17.7
     lon =    -171.660   +/-   10.2              MAGNITUDE 4.2 (GS)       
     dep =        38.4   +/-    5.0   

     65 km (40 miles) SSW of Amukta Island, Alaska (pop < 100)
     101 km (62 miles) SW of Yunaska Island, Alaska (pop < 100)
     1676 km (1041 miles) WSW of Anchorage, Alaska
     2445 km (1519 miles) W of JUNEAU, Alaska

     nph =   36 of  37    se = 0.70    FE=009                            A   

     error ellipse = (340.0,  0.0, 28.5;250.0,  4.0, 13.1; 72.0, 85.0,  7.5)

 mb = 4.2 ( 15)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 3.8 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 NIKH ePn     01:42:14.55   0.1    2.0  59 d:9.5+1     3.8                   NIKH
      eSn     01:42:38.40  S res =   0.3 
 ADK  ePn     01:42:30.03   0.3    3.1 270                                   ADK 
      eSn     01:43:04.23  S res =  -1.4X
 KIWB ePn     01:42:34.06   0.3    3.4 270                                   KIWB
      eSn     01:43:12.64  S res =  -0.3 
 UNV  ePn     01:42:37.94   0.9    3.6  57                                   UNV 
 AKUT ePn     01:42:44.66   0.5    4.2  56                                   AKUT
 SPIA ePn     01:42:59.89   0.3    5.3   8                                   SPIA
      eSn     01:43:57.22  S res =  -1.9 
 FALS ePn     01:43:06.34   0.8    5.7  56                                   FALS
 SDPT ePn     01:43:29.87   0.5    7.5  59                                   SDPT
 CHGN ePn     01:43:48.91  -0.3    8.9  56                                   CHGN
 SVW2 ePn     01:44:41.66   0.6   12.7  38                                   SVW2
 ANM  ePn     01:44:46.24   0.4   13.1  12                                   ANM 
 SCM  ePn     01:45:30.35  -0.7   16.4  44 b:2.7+1 1.2 4.2                   SCM 
 KLU  ePn     01:45:34.02  -2.9   16.9  46 b:3.7+1 1.6 4.3                   KLU 
 DHY  ePn     01:45:36.83  -1.3   17.0  40 b:5.5+0 1.2 3.6                   DHY 
 MLY  ePn     01:45:37.26   0.3   16.9  31 b:1.1+1 1.4 3.8                   MLY 
 ILB  ePn     01:45:49.34  -1.9   18.1  35                                   ILB 
 BALM eP      01:45:55.25   0.4   18.4  49 b:7.3+1 1.8 4.6                   BALM
 SCRK eP      01:45:57.08  -1.9   18.8  40 b:3.1+1 1.9 4.2                   SCRK
 TOLK eP      01:46:08.85  -0.9   19.8  24 b:4.9+0 .75 3.9                   TOLK
 EGAK eP      01:46:13.72  -1.0   20.2  39 b:1.3+1 1.5 4.1                   EGAK
 HYT  eP      01:46:19.88   0.4   20.6  51 b:8.4+0 .74 4.2                   HYT 
 SKAG eP      01:46:29.52   0.4   21.6  55 b:1.5+1 .88 4.4                   SKAG
 INK  eP      01:46:56.07  -2.0   24.5  34 b:1.6+1 1.5 4.3                   INK 
 DLBC eP      01:46:56.76  -0.1   24.3  58 b:3.6+1 1.7 4.6                   DLBC
 YKB5 eP      01:47:59.91  -1.7   31.6  48                                   YKB5
 MCMT eP      01:49:03.58  -0.2   38.7  77                                   MCMT
 YHH  eP      01:49:14.26   0.2   40.0  75 b:2.1+0 .66 4.1                   YHH 
 BW06 eP      01:49:29.11  -0.6   41.9  77 b:3.8+0 1.0 4.1                   BW06
 MWC  eP      01:49:29.16  -1.0   41.9  93 b:3.0+1 1.5 4.8                   MWC 
 PDAR eP      01:49:29.75   0.1   41.9  77                                   PDAR
 PD31 eP      01:49:30.10   0.4   41.9  77                                   PD31
 FCC  eP      01:49:31.98  -0.5   42.3  49                                   FCC 
 AS01 eP      01:54:33.19  -0.8   89.0 228                                   AS01



 Generated 2013 FEB 22 at 02:37 UTC

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