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Earthquakes in Oklahoma

Submitted by john on Tue, 05/06/2014 - 15:35
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Magnitude 6.7 Earthquake Vancouver Island, April 23, 2014

Submitted by john on Wed, 04/23/2014 - 20:51

The earthquake was near the Haida Gwai area, that has been the site of several large earthquakes recently.  A map of the region with the earthquake and a selection circle is below:

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Magnitude 7.5 Earthquake near Papua, New Guinea April 19, 2014

Submitted by john on Sat, 04/19/2014 - 12:44

A strong earthquake occurred near Papua New Guinea a few hours ago on Saturday Apr 19 2014 at 06:27:59 GMT-0700 (PDT).  From the Hazard Viewer we can do a simple but rapid analysis.  The forecast from the Hazard Viewer was computed last night at midnight, a few hours prior to the earthquake.  The earthquake locations are shown below, with the bright red event being the M7.5 mainshock:

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Chile Earthquake Magnitude M7.8 Aftershock

Submitted by john on Wed, 04/02/2014 - 20:32

Some computations from the hazard viewer.  This event is much closer to Iquique than the mainshock, probably more damage.

(Update  21:29 PDT: Magnitude now downgraded to 7.6)

Events and forecast map, together with selection circle.

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Chile Earthquake Seismic Gap

Submitted by john on Tue, 04/01/2014 - 20:04

One of the theories about earthquake occurrence over the years is that seismic gaps develop between major and great earthquakes, and are eventually filled.  With that in mind, it is interesting to plot the approximate slip planes for both the M8.8 earthquake of 27 February, 2010, and today's M8.2 earthquake of April 1, 2014.

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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.

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