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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.
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 ...
Diego Melgar Moctezuma, associate professor of earth sciences at the University of Oregon and the director of the new Cascadia Region Earthquake Science Center, poses in his office on Oct. 18, 2023.
The last known great earthquake in the northwest was the 1700 Cascadia earthquake, 325 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.
[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 ...
Up to 66,900 people died from earthquakes in 2023, the highest death toll for earthquakes since 2010. At least 59,488 people died in the Turkey–Syria doublets of February, which dominated world headlines because of its extensive devastation; the first mainshock was also the largest earthquake of the year at M w 7.8.
Nearly 75% of the U.S., including Alaska and Hawaii, could experience a damaging earthquake sometime within the next century, USGS study finds.
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.