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Scientists Study Future Megathrust Earthquake In Pacific Northwest

July 29, 2011 Comments off

irishweatheronline

Seismic chart showing the Japan quake on 11 March 2011

Seismic chart showing the Japan quake on 11 March 2011

The Olympic Peninsula in Washington State, USA, and British Columbia, Canada, could be among the hardest hit locations in the event of a future megathrust earthquake along the Pacific coast.

A new study led by Simon Fraser University earth scientist Andy Calvert and published in Nature Geoscience this week indicates the depth of the fault between the two tectonic plates forming the Earth’s surface in the Pacific Northwest is seven kilometres deeper than previously proposed.

Calvert speculates it may mean part of the fault’s locked zone — where a megathrust earthquake can occur — could be beneath the Olympic Peninsula.

Calvert’s team studied a 200-kilometre section of a fault formed by the subduction of the oceanic Juan de Fuca plate under the Read more…