| Title | Submarine Mass Movements in Canada: Geohazards with Far-Reaching Implications |
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| Author | Mosher, D C |
| Source | Comptes rendus de la 4e Conférence canadienne sur les géorisques: des causes à la gestion/Proceedings of the 4th Canadian Conference on Geohazards : From Causes to Management; by Locat, J (ed.); Perret, D
(ed.); Turmel, D (ed.); Demers, D (ed.); Leroueil, S (ed.); 2008 p. 55-62 |
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| Year | 2008 |
| Alt Series | Earth Sciences Sector, Contribution Series 20080018 |
| Document | book |
| Lang. | English; French |
| Media | paper |
| Province | Eastern offshore region; Western offshore region; Offshore region; Northern offshore region |
| Area | St. Lawrence Estuary; Grief Point; St. Pierrre Slope; Grand Banks; Scotian Slope; Labrador margin; Hopedale Saddle |
| Subjects | marine geology; environmental geology; coastal environment; coastal studies; coastal erosion; coastal management; shoreface deposits; shorelines; shoreline changes; landslide deposits; landslides;
submarine features; submarine transport; tsunami; continental slope; slope deposits; slope failures; slope stability |
| Illustrations | sketch maps; images; cross-sections |
| Program | Geoscience for Oceans Management Geohazards and Constraints to Offshore Development |
| Released | 2008 01 01 |
| Abstract | Canada has the longest coastline and largest continental margin of any other nation in the World. As a result it is vulnerable to marine geohazards, such as submarine landslides and consequent tsunamis.
Coastal landslides represent a specific threat because of their possible proximity to societal infrastructure and high tsunami potential. They occur without warning and with little time lag between failure and possible tsunami impact. Continental
margin landslides are common in the geologic record but rare on human timescales. Some ancient submarine landslides are massive but more recent events indicate that even relatively small slides on continental margins can generate devastating
tsunamis. Tsunami impact can be 100's of km away from the source event. Identification of high potential submarine landslide regions, combined with an understanding of landslide and tsunami processes and sophisticated tsunami propagation models are
required to identify areas of high risk of impact. |
| GEOSCAN ID | 225057 |
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