Tsunami hazard assessment of Canada
We present a preliminary probabilistic tsunami hazard assessment of Canadian coastlines from local and far-field, earthquake, and large submarine landslide sources. Analyses involve published historical, palaeotsunami and palaeoseismic data, modelling, and empirical relations between fault area, ear...
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Online Access: | https://hal.science/hal-00963614 https://doi.org/10.1007/s11069-013-0809-5 |
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ftunivnantes:oai:HAL:hal-00963614v1 2023-05-15T14:55:49+02:00 Tsunami hazard assessment of Canada Leonard, Lucinda J. Rogers, Garry C. Mazzotti, Stephane Geological Survey of Canada - Office (GSC) Natural Resources Canada (NRCan) University of Victoria Canada (UVIC) Risques (Géosciences Montpellier) Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) 2014-01 https://hal.science/hal-00963614 https://doi.org/10.1007/s11069-013-0809-5 en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s11069-013-0809-5 hal-00963614 https://hal.science/hal-00963614 doi:10.1007/s11069-013-0809-5 ISSN: 0921-030X EISSN: 1573-0840 Natural Hazards https://hal.science/hal-00963614 Natural Hazards, 2014, 70 (1), pp.237-274. ⟨10.1007/s11069-013-0809-5⟩ Tsunami Probabilistic hazard analysis Canada Earthquake Landslide [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2014 ftunivnantes https://doi.org/10.1007/s11069-013-0809-5 2023-02-14T23:55:00Z We present a preliminary probabilistic tsunami hazard assessment of Canadian coastlines from local and far-field, earthquake, and large submarine landslide sources. Analyses involve published historical, palaeotsunami and palaeoseismic data, modelling, and empirical relations between fault area, earthquake magnitude, and tsunami run-up. The cumulative estimated tsunami hazard for potentially damaging run-up (≥1.5 m) of the outer Pacific coastline is ~40-80 % in 50 years, respectively one and two orders of magnitude greater than the outer Atlantic (~1-15 %) and the Arctic (<1 %). For larger run-up with significant damage potential (≥3 m), Pacific hazard is ~10-30 % in 50 years, again much larger than both the Atlantic (~1-5 %) and Arctic (<1 %). For outer Pacific coastlines, the ≥1.5 m run-up hazard is dominated by far-field subduction zones, but the probability of run-up ≥3 m is highest for local megathrust sources, particularly the Cascadia subduction zone; thrust sources further north are also significant, as illustrated by the 2012 Haida Gwaii event. For Juan de Fuca and Georgia Straits, the Cascadia megathrust dominates the hazard at both levels. Tsunami hazard on the Atlantic coastline is dominated by poorly constrained far-field subduction sources; a lesser hazard is posed by near-field continental slope failures similar to the 1929 Grand Banks event. Tsunami hazard on the Arctic coastline is poorly constrained, but is likely dominated by continental slope failures; a hypothetical earthquake source beneath the Mackenzie delta requires further study. We highlight areas susceptible to locally damaging landslide-generated tsunamis, but do not quantify the hazard. Article in Journal/Newspaper Arctic Mackenzie Delta Université de Nantes: HAL-UNIV-NANTES Arctic Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Pacific Natural Hazards 70 1 237 274 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Tsunami Probabilistic hazard analysis Canada Earthquake Landslide [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
Tsunami Probabilistic hazard analysis Canada Earthquake Landslide [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Leonard, Lucinda J. Rogers, Garry C. Mazzotti, Stephane Tsunami hazard assessment of Canada |
topic_facet |
Tsunami Probabilistic hazard analysis Canada Earthquake Landslide [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
We present a preliminary probabilistic tsunami hazard assessment of Canadian coastlines from local and far-field, earthquake, and large submarine landslide sources. Analyses involve published historical, palaeotsunami and palaeoseismic data, modelling, and empirical relations between fault area, earthquake magnitude, and tsunami run-up. The cumulative estimated tsunami hazard for potentially damaging run-up (≥1.5 m) of the outer Pacific coastline is ~40-80 % in 50 years, respectively one and two orders of magnitude greater than the outer Atlantic (~1-15 %) and the Arctic (<1 %). For larger run-up with significant damage potential (≥3 m), Pacific hazard is ~10-30 % in 50 years, again much larger than both the Atlantic (~1-5 %) and Arctic (<1 %). For outer Pacific coastlines, the ≥1.5 m run-up hazard is dominated by far-field subduction zones, but the probability of run-up ≥3 m is highest for local megathrust sources, particularly the Cascadia subduction zone; thrust sources further north are also significant, as illustrated by the 2012 Haida Gwaii event. For Juan de Fuca and Georgia Straits, the Cascadia megathrust dominates the hazard at both levels. Tsunami hazard on the Atlantic coastline is dominated by poorly constrained far-field subduction sources; a lesser hazard is posed by near-field continental slope failures similar to the 1929 Grand Banks event. Tsunami hazard on the Arctic coastline is poorly constrained, but is likely dominated by continental slope failures; a hypothetical earthquake source beneath the Mackenzie delta requires further study. We highlight areas susceptible to locally damaging landslide-generated tsunamis, but do not quantify the hazard. |
author2 |
Geological Survey of Canada - Office (GSC) Natural Resources Canada (NRCan) University of Victoria Canada (UVIC) Risques (Géosciences Montpellier) Géosciences Montpellier Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Université des Antilles et de la Guyane (UAG)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Leonard, Lucinda J. Rogers, Garry C. Mazzotti, Stephane |
author_facet |
Leonard, Lucinda J. Rogers, Garry C. Mazzotti, Stephane |
author_sort |
Leonard, Lucinda J. |
title |
Tsunami hazard assessment of Canada |
title_short |
Tsunami hazard assessment of Canada |
title_full |
Tsunami hazard assessment of Canada |
title_fullStr |
Tsunami hazard assessment of Canada |
title_full_unstemmed |
Tsunami hazard assessment of Canada |
title_sort |
tsunami hazard assessment of canada |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-00963614 https://doi.org/10.1007/s11069-013-0809-5 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Arctic Canada Mackenzie Delta Pacific |
geographic_facet |
Arctic Canada Mackenzie Delta Pacific |
genre |
Arctic Mackenzie Delta |
genre_facet |
Arctic Mackenzie Delta |
op_source |
ISSN: 0921-030X EISSN: 1573-0840 Natural Hazards https://hal.science/hal-00963614 Natural Hazards, 2014, 70 (1), pp.237-274. ⟨10.1007/s11069-013-0809-5⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s11069-013-0809-5 hal-00963614 https://hal.science/hal-00963614 doi:10.1007/s11069-013-0809-5 |
op_doi |
https://doi.org/10.1007/s11069-013-0809-5 |
container_title |
Natural Hazards |
container_volume |
70 |
container_issue |
1 |
container_start_page |
237 |
op_container_end_page |
274 |
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1766327831025942528 |