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TitleTsunamis
DownloadDownload (whole publication)
AuthorClague, J J
SourceA synthesis of geological hazards in Canada; by Brooks, G R (ed.); Geological Survey of Canada, Bulletin 548, 2001 p. 27-42, https://doi.org/10.4095/212211 (Open Access)
Image
Year2001
PublisherNatural Resources Canada
Documentserial
Lang.English
Mediapaper; on-line; digital
RelatedThis publication is contained in Brooks, G R; (2001). A synthesis of geological hazards in Canada, Geological Survey of Canada, Bulletin no. 548
File formatpdf
ProvinceBritish Columbia; Eastern offshore region; Western offshore region; Newfoundland and Labrador
NTS20P; 21A; 11D; 11E; 11F; 11I; 11J; 1L; 1M; 92B; 92C; 92D; 92E; 92F; 92G; 92K; 92L; 92M; 92N; 103; 102I; 102P; 104B; 104C; 104D; 104E; 104F; 104G; 104K; 104L; 104M; 114
AreaVancouver Island; Burin Peninsula; Grand Banks; Pacific Coast; Atlantic Coast
Lat/Long WENS-66.0000 -54.0000 47.5000 43.0000
Lat/Long WENS-144.0000 -122.0000 60.0000 48.0000
Subjectsgeophysics; health hazards; tsunami; landslides; earthquakes; sea level changes; wave propagation; Cascadia Subduction Zone; geological hazards
Illustrationssketch maps; photographs; tables; graphs
Released2001 04 01
AbstractTsunamis are waves produced by earthquakes, landslides, volcanic eruptions, and meteorite impacts. Large tsunamis strike the British Columbia coast on average once every few hundred years. Some, including one from Alaska in 1964, are produced by distant earthquakes beneath the Pacific Ocean. Most, however, are triggered by earthquakes at the Cascadia subduction zone, which extends along the Pacific coast from Vancouver Island to northern California. Smaller, more localized tsunamis in British Columbia are triggered by landslides. Tsunamis are uncommon on the Atlantic and Arctic coasts. In 1929, however, an earthquake beneath the Grand Banks, 250 km south of Newfoundland, triggered a large submarine slump that set off a tsunami that damaged 40 communities in Newfoundland and claimed 28 lives. Tsunamis cannot be prevented, but the damage they cause can be reduced through a variety of nonstructural and structural measures, including zoning, property relocation, emergency preparedness, public education, dyking, barrier construction, floodproofing, and tsunami-resistant construction.

GEOSCAN ID212211