Articles tagged "cascadia subduction zone"

bc earthquake december 23 2019 f

Shallow M6.0 earthquake hits off the coast of Vancouver Island, British Columbia, Canada

A strong and shallow earthquake registered by the USGS as M6.0 hit off the coast of Vancouver Island, B.C., Canada at 19:49 UTC on December 23, 2019. The agency is reporting a depth of 10 km (6.2 miles). Earthquakes Canada is reporting M5.8 at a depth of 5 km (3.1...

December 23, 2019

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Study suggests Cascadia can trigger quakes on the northern San Andreas, California

Controversial research argues that quakes made a one-two punch off the United States' west coast at least eight times in the past 3 000 years. For instance, the quake that hit Cascadia fault off the northern California coast triggered a second tremor on the San...

December 08, 2019

cascadia earthquake model

3D models of Cascadia megathrust events match coastal changes from 1700 earthquake

Researchers were able to get a better idea of what kind of megathrust seismic activity was behind the 1700 Cascadia earthquake by combining models of Magnitude 9 to 9.2 earthquakes on the Cascadia Subduction Zone with geological evidence of past coastal changes....

November 05, 2019

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Very shallow M6.3 earthquake hits off the coast of Oregon, U.S.

A strong and shallow earthquake registered by the USGS as M6.3 hit off the coast of Oregon, U.S. at 15:07 UTC on August 29, 2019. The agency is reporting a depth of 5.4 km (3.3 miles). EMSC is reporting M6.3 at a depth of 2 km (1.2 miles). The epicenter was located...

August 29, 2019

cascadia zone simulations

50 simulations of the ‘Really Big One’ show how a 9.0 Cascadia earthquake could play out

One of the worst nightmares for many Pacific Northwest residents is a huge earthquake along the offshore Cascadia Subduction Zone, which would unleash damaging and likely deadly shaking in coastal Washington, Oregon, British Columbia and northern California. The...

October 23, 2017

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Evidence of large ancient earthquakes of the Cascadia fault

The coastal salt marshes of the Cascadia subduction zone (CSZ) preserve evidence from several large earthquakes, between 8 and 9 in magnitude, according to paleoseismologists. So far, the scientists have been using only the stratigraphic data records to gain insight...

November 03, 2015

cascadia subduction zone tsunami

New study shows Cascadia Subduction Zone earthquake risk to be much higher than previously thought

America's Pacific Northwest has a 37% chance of being hit by a magnitude 8 or larger earthquake in the next 50 years, a new study shows. That's more than double previous estimates of a 10-15% risk. Great Subduction Zone earthquakes are the largest

August 08, 2012

cross section

New cross-section reveals what's beneath North America

To see the big picture of North America, look no further than a new detailed cross-section of the continent that ventures down to its deepest roots and has uncovered a mystery at its very foundation.Scientists constructed the cut-away map, which is curved just as

June 06, 2011