Foreshocks of Yesterday's Earthquake
As a matter of interest, I ran an ANSS catalog search of the region surrounding yesterday's Haida Gwaii (Queen Charlotte Islands) earthquake. It appears there were 4 M>5 foreshocks of the M7.7 event that occurred in the hours before the mainshock. These events are listed below.
Date Time Lat Lon Depth Mag -------------------------------------------------------
2012/10/28 03:14:10.06 52.6290 -132.2430 10.00 5.80 2012/10/28 04:25:17.40 52.0190 -133.3700 10.10 5.30 2012/10/28 06:16:53.31 52.2680 -131.2120 11.50 5.10 2012/10/28 07:25:22.09 52.2700 -131.4930 10.60 5.10 2012/10/28 08:04:08.00 52.7700 -131.8400 9.00 7.70 2012/10/28 09:17:27.69 52.1590 -132.1490 10.10 5.30
About OpenHazards Bloggers
Steven Ward is a Research Geophysicist at
the Institute of Geophysics and Planetary Physics, UC Santa Cruz. He specializes in the quantification and simulation of
natural hazards. Read Steve's blog.
John Rundle is a Distinguished Professor of Physics
and Geology at UC Davis and
the Executive Director of the APEC Collaboration for Earthquake Simulations. He
chaired the Board of Advisors for the Southern California Earthquake Center from 1994 to 1996. Read John's blog.