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Structure of the Cascadia subduction zone. The Cascadia subduction zone is a 1,000 km (620 mi) long dipping fault that stretches from Northern Vancouver Island to Cape Mendocino in northern California. It separates the Juan de Fuca and North America plates. New Juan de Fuca plate is created offshore along the Juan de Fuca Ridge.
The Cascadia Subduction Zone is one of the biggest hazards in the U.S. The fault runs offshore along the West Coast from Northern California to northern Vancouver Island in Canada.
Over the past century, scientists have only observed five magnitude-9.0 or higher earthquakes — all megathrust temblors like the one predicted for the Cascadia Subduction Zone.
The 1700 Cascadia earthquake occurred along the Cascadia subduction zone on January 26, 1700, 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 .
Scientists now know the 700-mile fault called the Cascadia Subduction Zone, 100 miles off the coast of Northern California stretching north to Vancouver Island, could trigger a 9.0 magnitude ...
The Pacific coast of North America is an example of a subduction zone: it includes the Cascadia subduction zone, which lies off the coasts of British Columbia, Washington, Oregon, and Northern California. The regions around the Aleutian Islands and Gulf of Alaska are also capable of producing large offshore earthquakes and thus large tsunamis. [4]
Tsunami waves would batter the coast for 10 hours. ... For the Cascadia subduction zone, gaining a better understanding of the warning signs requires more data on slow-slip events, improved ...
Scientists say that the Cascadia subduction zone off the coast of the Pacific Northwest has the potential to spark a magnitude-9.0+ earthquake, plus a subsequent tsunami. That scenario last ...