Theoretical P-Wave Travel Times of Magnitude: 7.7 QUEEN CHARLOTTE ISLANDS CANADA Earthquake 2012 October 28

Earthquake Details:

2012 October 28 03:04:09 UTC: QUEEN CHARLOTTE ISLANDS CANADA EARTHQUAKE

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Magnitude: 7.7

Date-Time: Sunday, October 28, 2012 at 03:04:09 UTC

Saturday, October 27, 2012 at 08:04:09 PM at epicenter

Earthquake data:

Location : 52.742°N, 132.131°W

Depth : 20.1 km (12.5 miles)

Region : QUEEN CHARLOTTE ISLANDS REGION

Location Uncertainty: horizontal +/- 12.2 km (7.6 miles); depth +/- 2.7 km (1.7 miles)

Parameters: NST=778, Nph=782, Dmin=63.5 km, Rmss=0.86 sec, Gp= 29°, M-type=regional moment magnitude (Mw), Version=C

Theoretical P-Wave Travel Times

The figure above shows the mao of theoretical travel times (min) of the compressional (P) waves towards the globe from earthquake location. The heavy black lines shown are the approximate distances to the P-wave shadow zone of earthqauke (103 to 140 degrees). In determining it spherically-symmetric IASP91 reference earth velocity model was used.