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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.
Pages in category "Seismic zones of British Columbia" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. A.
Marine seismic reflection surveys on Puget Sound where it cuts across the various faults have provided cross-sectional views of the structure of some of these faults, and an intense, wide-area combined on-shore/off-shore study in 1998 (Seismic Hazards Investigation in Puget Sound, or SHIPS) [12] resulted in a three-dimensional model of much of ...
The team completed a detailed map of more than 550 miles of the subduction zone, down to the Oregon-California border. ... which focuses on earthquake hazard and tsunami risk, is already using the ...
Surface motion map for a hypothetical earthquake on the northern portion of the Hayward Fault Zone and its presumed northern extension, the Rodgers Creek Fault Zone. A seismic hazard is the probability that an earthquake will occur in a given geographic area, within a given window of time, and with ground motion intensity exceeding a given threshold.
Cascadia earthquake: Earthquake: British Columbia: West Coast M w 8.7 – 9.2 megathrust earthquake along the Cascadia subduction zone: 1700: Eruption of Tseax Cone: Volcanic eruption: Tseax Cone, British Columbia: West Coast 2000 One of Canada's worst known geophysical disasters 1711 October 7: HMS Feversham: Shipwreck: Scatarie Island, Colony ...
Seismic zones of British Columbia (4 P) V. ... Pages in category "Natural hazards in British Columbia" The following 8 pages are in this category, out of 8 total.
The islands are located along the Queen Charlotte Fault, an active transform fault that produces significant earthquakes every 3–30 years. This is the result of the converging of the Pacific and North American Plates along the archipelago's west coast. [63] [64] Major earthquakes have occurred in the Haida Gwaii in 1949 and 2012. Though the ...