Scientists map one of Earth’s top hazards in the Pacific Northwest

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A catastrophic earthquake and tsunami will one day hit the Pacific Northwest as tectonic plates slip at the Cascadia subduction zone off the coast.

A catastrophic earthquake and tsunami will one day hit the Pacific Northwest as tectonic plates slip at the Cascadia subduction zone

resource will help scientists understand the range of earthquake and tsunami scenarios — and help policymakers devise building codes that protect people.off the coast of Washington, where the fault is flat and smooth, closer to the surface and extends farther onshore, may be particularly at risk. This fault zone is hazardous is because it’s a “megathrust” fault. One piece of the Earth’s crust, a tectonic plate called the Juan de Fuca plate, dives down beneath the North American continental plate. These plates move at the rate fingernails grow, but also get stuck and build up stresses. The 2011 Tohoku earthquake in Japan and the 2004 Indian Ocean earthquake and tsunami occurred at subduction zones.But to understand earthquakes, details matter.

 

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