Seismology

Lack Of Quake Activity
12:26 pm
Tue December 2, 2014

Study: Offshore Fault Where The 'Big One' Originates Eerily Quiet

Researchers retrieve an ocean-bottom seismometer off the coast of Oregon in 2013.
Matt Cooper, Univ. of Oregon

Originally published on Tue December 2, 2014 5:58 pm

Any parent of a rambunctious youngster can tell you trouble might be afoot when things go quiet in the playroom. Two independent research initiatives indicate there is a comparable situation with the Cascadia earthquake fault zone.

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Seismic Mapping
5:27 pm
Fri July 25, 2014

USGS Tries Human Racket To Create Seismic Hazard Survey

A seismic "thumper" used to map earthquake faults.
Credit Horemu / Wikimedia Commons

Research geologists just finished a field trial to test a less invasive way to complete seismic hazard surveys. The federal scientists attempted to map an earthquake fault under Seattle simply by listening for underground echoes from all the noise we humans create at the surface.

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Football Quakes
3:54 pm
Fri January 10, 2014

Seismic Researchers To Measure Waves Created By Seahawks Fans

A view of CenturyLink FIeld during a Seattle Seahawks game.
Noah Meyerhans Flickr

Originally published on Fri January 10, 2014 3:24 pm

Turnovers, sacks and touchdowns won’t be the only things tracked at Saturday’s NFL playoff game between the Seattle Seahawks and the New Orleans Saints.

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Cascadia Fault Zone
5:01 pm
Fri June 28, 2013

Research Cruise Investigates 'Lock Zone' Of Dangerous Offshore Fault

Crew members of the R/V Atlantis recover the submersible "Jason," after it connected a chain to an undersea seismometer off the coast of Oregon.
Matt Cooper University of Oregon

This week a research ship is retrieving dozens of seismometers that have spent the last year on the ocean floor off the Northwest coast. Earthquake scientists hope the data they're about to get will shed more light on the structure of the offshore Cascadia fault zone. That plate boundary will be the source of the Big One whenever it rips.

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Silent Earthquakes
5:12 pm
Fri October 5, 2012

'Silent Earthquakes' Ripple Under Cascadia

The past five weeks saw two swarms of "slow slip and tremor" in the Northwest.
Pacific Northwest Seismic Network

Parts of Washington and Oregon are in the midst of silent earthquakes this week. You can't feel this so-called "slow slip" quake and it doesn't cause damage. Still, scientists want to learn more about the recently discovered phenomenon.

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