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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. The plate slipped an average of 20 meters (66 ...
The team completed a detailed map of more than 550 miles of the subduction zone, down to the Oregon-California border. ... Earthquake and tsunami modelers are beginning to assess how the new data ...
In 2011, more than 18,000 people lost their lives amid a magnitude-9.0 earthquake and tsunami in Tohoku, Japan, The New Yorker noted. That catastrophe wound up costing approximately $220 billion.
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.
On Jan. 26, 1700, an earthquake on the Cascadia fault caused the forest to lurch downward by more than 3 feet. Soon after, a tsunami perhaps 100 feet high barreled through at 20 or 30 mph.
English: A scenario macroseismic intensity map of the median ground motion values from magnitude 9.0 scenario earthquake on the Cascadia Subduction Zone. Maximum intensity of IX (Violent).
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.
Cascadia subduction zone, Vancouver Island. In 1996, a team of researchers linked the orphaned 1700 tsunami in Japan with a magnitude 9 earthquake and tsunami in North America in a Trans-Pacific reunion. [7]: 94–95 [8] [9] Scientists "dated the earthquake to the evening of January 26, 1700" and approximated its size as magnitude 9.