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The 1949 Olympia earthquake was a damaging magnitude 6.7 intraslab earthquake that occurred at 52 km depth and caused eight deaths. Another notable intraslab earthquake in the Puget Sound region was the magnitude 6.8 2001 Nisqually earthquake. Intraslab earthquakes in Cascadia occur in areas where the subducting plate has high curvature. [13]
First supershear earthquake observed in an oceanic plate boundary 2015-04-24 South of Haida Gwaii: 51.62 -130.77 0 0 6.2 V 2012-11-08 West of Vancouver Island 49.23 -128.48 0 0 6.1 IV [9] 2012-10-30 Haida Gwaii: 52.37 -131.90 0 0 6.2 Aftershock of 7.8 earthquake [10] 2012-10-28 Haida Gwaii 52.67 -132.60 0 0 6.3 V Aftershock of 7.8 earthquake [11]
It is considered to be one of Vancouver's most earthquake-resistant structures. [citation needed] The building's address is 1333 W. Georgia Street. It is located in Vancouver's Coal Harbour, halfway between the main business district in Vancouver's Downtown and Stanley Park.
A fault off the Pacific coast could devastate Washington, Oregon and Northern California with a major earthquake and tsunami. Researchers mapped it comprehensively for the first time.
Intraslab (Benioff zone) earthquakes, such as the M 6.7 2001 Nisqually earthquake, caused by slippage or fracturing on a small part of the subducting plate at a depth of around 50 km (31 miles). Relatively shallow crustal earthquakes, generally less than 25 km (16 miles) deep, caused by stresses and faulting in the near-surface crustal structures.
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 ...
A map of the Juan de Fuca plate with noted seismic incidents, including the 2001 Nisqually earthquake. The Juan de Fuca plate is bounded on the south by the Blanco fracture zone (running northwest off the coast of Oregon), on the north by the Nootka Fault (running southwest off Nootka Island, near Vancouver Island, British Columbia) and along the west by the Pacific plate (which covers most of ...
The 1946 Vancouver Island earthquake struck Vancouver Island on the coast of British Columbia, Canada, on June 23 at 10:15 a.m. [1] with a magnitude estimated at 7.0 M s [2] and 7.5 M w. [6] The main shock epicenter occurred in the Forbidden Plateau area northwest of Courtenay .