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1700 Cascadia earthquake

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This Earthquake Drowned the Pacific Northwest

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Tsunami Forecast Model Animation: Cascadia 1700

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Ghost Forests of the Pacific N.W.—Evidence for Cascadia's Past Earthquakes ("orphan tsunami")

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Cascadia Earthquake Model

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Earthquakes of Cascadia: 1979 - 2019

The 1700 Cascadia earthquake occurred along the Cascadia subduction zone on January 26 with an estimated moment magnitude of 8.7–9.2. The megathrust earthquake involved the Juan de Fuca Plate from mid-Vancouver Island, south along the Pacific Northwest coast as far as northern California. The length of the fault rupture was about 1,000 kilometers, with an average slip of 20 meters (66 ft).
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    • Evidence 

    • Future threats