Magnitude 5.6 – OKLAHOMA

A moderate Magnitude 5.6 earthquake struck Oklahoma at 3:53:10 UTC on Sunday November 5, 2011.  The display shows the waveform received in northeastern Ohio.  The waveform structure for earthquakes this close is complicated and since we don’t often see them I haven’t spent a lot of time trying to decipher it.  The simple body and surface waves are not even listed in the USGS arrival time list shown below:

 DATE-(UTC)-TIME    LAT    LON     DEPTH MAG   Q   COMMENTS
  2011/11/06 03:53:10  35.54N  96.75W   5.0 5.6      US: OKLAHOMA
   Expected 1s period body wave amplitude     [  3.92E-02 µm]  [  2.47E-01 µm/s]

 delta   azimuth (degrees clockwise from north)
 (deg)      eq-to-station     station-to-eq
 12.74           62.4             251.6

                 travel   arrival time
    #  code      time(s)  dy hr mn sec
    1  Pn         181.74   0  3 56 11
    2  pPn        182.95   0  3 56 12
    3  sPn        183.70   0  3 56 13
    4  PnPn       189.55   0  3 56 19
    5  PbPb       223.00   0  3 56 52
    6  PgPg       244.02   0  3 57 14
    7  Sn         325.16   0  3 58 35
    8  sSn        327.17   0  3 58 37
    9  SnSn       338.39   0  3 58 48
   10  SbSb       386.32   0  3 59 36
   11  SgSg       421.22   0  4  0 11
   12  PcP        518.14   0  4  1 48
   13  ScP        731.92   0  4  5 21
   14  PcS        732.55   0  4  5 22
   15  ScS        948.32   0  4  8 58
   16  PKiKP      995.55   0  4  9 45
   17  pPKiKP     997.27   0  4  9 47
   18  sPKiKP     997.90   0  4  9 47
   19  SKiKP     1207.17   0  4 13 17
   20  PKKPdf    1914.90   0  4 25  4
   21  SKKPdf    2126.52   0  4 28 36
   22  PKKSdf    2127.15   0  4 28 37
   23  SKKSdf    2338.76   0  4 32  8
   24  P'P'df    2425.57   0  4 33 35
   25  P'P'ab    2599.91   0  4 36 29
   26  S'S'df    3274.10   0  4 47 44
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