Something Is Building Beneath the Pacific Northwest
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Scientists have made an important discovery beneath the Cascadia Subduction Zone, the massive offshore fault capable of producing one of the most powerful earthquakes in North America. New seafloor measurements indicate that part of the shallow Cascadia megathrust off Oregon appears to be largely locked. That matters because a future Cascadia earthquake could involve a magnitude 9 rupture, generate a major Cascadia tsunami, and even permanently lower sections of the Pacific Northwest coastline. The last great Cascadia earthquake struck in 1700, sending a tsunami across the Pacific to Japan. Today, new instruments are allowing scientists to directly measure parts of the fault that were previously extremely difficult to observe. But does this mean the Big One is getting closer? In this video, we investigate what scientists recently discovered beneath the Pacific Northwest, what a future magnitude 9 earthquake could actually do, how the coastline itself could change, and whether scientist
Tags: space news, nasa, nasa space news, Cascadia Subduction Zone, The Big One, Cascadia Big One, Cascadia tsunami, megaquake, Cascadia fault, Cascadia megathrust, earthquake 2026, earthquake discovery, earthquake warning, massive earthquake, US earthquake, America earthquake, tsunami warning, Pacific Northwest, Oregon tsunami, Washington tsunami
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