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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]
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]
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 ...
Today, the Cascadia Subduction Zone remains eerily quiet. In other subduction zones, scientists often observe small earthquakes frequently, which makes the area easier to map, according to ...
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 .
Vancouver, BC West Coast 8 [12] 1946 June 23: Vancouver Island earthquake: Earthquake Vancouver Island, BC West Coast 2 1946 September 18: 1946 SABENA DC-4 crash: Aircrash near Gander, Newfoundland: Atlantic Canada 27 1949 September 9: Canadian Pacific Air Lines Flight 108: Aircrash/Bombing near Sault-au-Cochon, Quebec: Central Canada 23 1949 ...
The earthquake's epicentre was on Moresby Island of the Haida Gwaii archipelago (formerly known as the Queen Charlotte Islands). This was the second largest Canadian earthquake ever recorded by a seismometer , after the 1949 Queen Charlotte Islands earthquake , about 135 kilometres (84 mi) away. [ 4 ]
The 1949 Queen Charlotte Islands earthquake was caused by a rupture on the Queen Charlotte Fault, which forms part of the boundary between the Pacific and North American plates. This fault runs from northern Vancouver Island, west of Haida Gwaii, up to the Gulf of Alaska. The earthquake ruptured the fault for a distance more than 500 km (311 mi).