An Overview of Some Significant Eastern Canadian Earthquakes and Their Impacts on the Geological Environment,Buildings and the Public |
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Authors: | Lamontagne Maurice |
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Affiliation: | (1) Geological Survey of Canada, 7 Observatory Crescent, Ottawa, Ont, K1A 0Y3, Canada |
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Abstract: | Numerous moderate to large earthquakes have occurred in eastern Canada. Some ofthese events had significant geological effects such as surface faulting, liquefaction,submarine slumping, rock avalanches, rock falls, landslides, railroad embankmentslides, and one tsunami. Some of these earthquakes caused considerable damage tobuildings with unreinforced masonry elements that were located on thick clay deposits. These events also had strong psychological and social impacts, mainly due to the unpreparedness of the population. To minimize these impacts, programs should be designed to map the land and offshore areas most susceptible to mass movements (Earth Sciences), to define buildings most at risk (Engineering) and to educate the public about mitigation actions (Education, science popularization). |
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Keywords: | Earthquakes paleoearthquakes landslides rock falls surface rupture damage psychosocial impact Charlevoix seismicity intraplate |
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