| Title | Probabilistic tsunami hazard of Canada: a preliminary assessment, its limitations, and future needs |
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| Author | Leonard, L J; Rogers, G C |
| Source | 11th Canadian Conference on Earthquake Engineering: facing seismic risk, conference proceedings; 93905, 2015 p. 1-10  Open Access |
| Links | Online - En ligne (PDF, 3.05 MB)
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| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150101 |
| Publisher | Canadian Association of Earthquake Engineering |
| Meeting | 11th Canadian Conference on Earthquake Engineering; Victoria, BC; CA; July 21-24, 2015 |
| Document | Web site |
| Lang. | English |
| Media | on-line; digital |
| File format | pdf (Adobe® Reader®) |
| Program | Public Safety Geoscience Western Canada Geohazards Project |
| Released | 2015 07 01 |
| Abstract |
A preliminary probabilistic tsunami hazard assessment of the Pacific, Atlantic and Arctic coastlines of Canada has been completed considering local and far-field earthquakes, and large submarine
landslide sources. The analysis used published historical, paleotsunami and paleoseismic data, modelling, and empirical relations between fault area, earthquake magnitude, and tsunami run-up. Results are presented as national maps showing the
probability of a potentially damaging tsunami (exceeding 1.5 m run-up) and a tsunami having significant damage potential (greater than or equal to 3 m run-up) within a 50-year time period at Canadian coastlines. Maps showing the estimated run-up with
return periods of 100, 500, 1000 and 2500 years are also provided. The cumulative estimated tsunami hazard for potentially damaging run-up on the outer Pacific coastline is one order of magnitude greater than the outer Atlantic and two orders greater
than the Arctic. For tsunamis with significant damage potential (greater than or equal to 3 m), Pacific hazard is again much larger than both the Atlantic and Arctic. For next generation maps with more site-specific information for use in tsunami
hazard mitigation, the empirical relationships used for these maps need to be replaced by detailed tsunami source, propagation and inundation modelling taking into account a wider variety of source scenarios and local bathymetry and topography.
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| Summary | (Plain Language Summary, not published)
A preliminary probabilistic tsunami hazard assessment of the Pacific, Atlantic and Arctic coastlines of Canada has been completed. Results are presented
as national maps showing the probability of a potentially damaging tsunami (exceeding 1.5 m run-up) and a tsunami having significant damage potential (= 3 m run-up) within a 50-year time period at Canadian coastlines. Maps showing the estimated
run-up with return periods of 100, 500, 1000 and 2500 years are also provided. The tsunami hazard on the outer Pacific coastline much greater than the Atlantic coastline which is much greater than the Arctic. |
| GEOSCAN ID | 296657 |
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