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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]
To map the subduction zone, researchers at sea performed active source seismic imaging, a technique that sends sound to the ocean floor and then processes the echoes that return. The method is ...
The earthquake caused a landslide near Mount Colonel Foster. One fortunate occurrence allowed researchers afterward to review the effects of the earthquake: an aerial photographic survey of Vancouver Island had commenced in 1946, soon after the earthquake, and these photographs were eventually studied by a geoscientist in the late 1970s. [11]
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 ...
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.
The 1949 earthquake was larger than the 1906 San Francisco earthquake, causing nearly a 500 kilometer-long segment of the Queen Charlotte Fault to break. The 1958 earthquake had a magnitude of 7.8 and led to a major landslide in Lituya Bay, Alaska. This resulted in a 1,720-foot (524-meter) tsunami that crashed into a mountainside, the largest ...
Example of a hazard map. A hazard map is a map that highlights areas that are affected by or are vulnerable to a particular hazard. They are typically created for natural hazards, such as earthquakes, volcanoes, landslides, flooding and tsunamis. Hazard maps help prevent serious damage and deaths. [1]
Britannia Creek, BC West Coast 37 Debris flood torrent kills 37 people in Britannia Beach 1922 October 4 and 5: The Great Fire: Fire Timsikaming District, Ontario: Central Canada 11 1925 February 2: Charlevoix–Kamouraska earthquake: Earthquake Charlevoix-region, Quebec: Central Canada 1927 January 9: Laurier Palace Theatre fire: Fire Montreal ...