Eerie quiet at NW fault where 'big one' may shake - Spokane, North Idaho News & Weather KHQ.com

Eerie quiet at NW fault where 'big one' may shake

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Seismic experts say it's been ominously quiet along the fault line off the Northwest coast where the "big one" earthquake could break loose. Seismic experts say it's been ominously quiet along the fault line off the Northwest coast where the "big one" earthquake could break loose.
TACOMA, Wash. -

Seismic experts say it's been ominously quiet along the fault line off the Northwest coast where the "big one" earthquake could break loose.

Seismometers have detected little grinding and slipping in recent years on the Cascadia Subduction Zone.

University of Oregon Geophysics Professor Doug Toomey tells Northwest Public Radio that could indicate the tectonic plates are locked or stuck.

That means it could be storing energy that could be unleashed in a possible magnitude 9 earthquake and tsunami.

That last full rip of the Cascadia Subduction Zone was in 1700. Geologists expect a recurrence every 400 to 600 years.

(Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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