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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.
Friday marked the 324th anniversary of the last Great Cascadia earthquake, an estimated 8.7 to 9.2 megaquake that rattled the Pacific Northwest and caused major tsunamis across the Pacific.
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 ...
[1] [2] The stated mission of the center [3] is to (i) carry out basic and applied science research on earthquake hazards at the Cascadia Subduction Zone, (ii) promote access to careers in the geosciences, especially amongst minoritized individuals, and (iii) form partnerships between researchers and organizations in charge of response and ...
Map showing the amount of advance warning time that might be available from ShakeAlert for several plausible future earthquake scenarios. [1]Initially the system has been developed to monitor and alert the West Coast of the United States, an area with significant seismic risk due to the San Andreas fault zone and the Cascadia subduction zone.
The last known great earthquake in the northwest was the 1700 Cascadia earthquake, 324 years ago. Geological evidence indicates that great earthquakes (> magnitude 8.0) may have occurred sporadically at least seven times in the last 3,500 years, suggesting a return time of about 500 years.
The Cascadia Region Earthquake Science Center (CRESCENT) will be the first center of its kind in the nation focused on earthquakes at subduction zones, where one tectonic plate slides beneath another.
Jun. 15—If humans could see the future, the West Coast would likely be spending every moment from now until its arrival preparing for the impending 9.0 Cascadia Subduction Zone earthquake. Off ...