Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada
Greater Montreal is situated in a region with moderate seismic activity and rests on soft ground deposits from the ancient Champlain Sea, as well as more recent alluvial deposits from the Saint Lawrence River. These deposits have the potential to amplify seismic waves, as demonstrated by past strong...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | GeoHazards |
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| Online Access: | https://www.mdpi.com/2624-795X/4/4/23 |
| _version_ | 1797380883186974720 |
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| author | Philippe Rosset Xuejiao Long Luc Chouinard |
| author_facet | Philippe Rosset Xuejiao Long Luc Chouinard |
| author_sort | Philippe Rosset |
| collection | DOAJ |
| description | Greater Montreal is situated in a region with moderate seismic activity and rests on soft ground deposits from the ancient Champlain Sea, as well as more recent alluvial deposits from the Saint Lawrence River. These deposits have the potential to amplify seismic waves, as demonstrated by past strong, and recent weak, earthquakes. Studies based on the 2015 National Seismic Hazard Model (SHM5) had estimated losses to residential buildings at 2% of their value for an event with a return period of 2475 years. In 2020, the seismic hazard model was updated (SHM6), resulting in more severe hazards for eastern Canada. This paper aims to quantify the impact of these changes on losses to residential buildings in Greater Montreal. Our exposure database includes population and buildings at the scale of dissemination areas (500–1000 inhabitants). Buildings are classified by occupancy and construction type and grouped into three building code levels based on year of construction. The value of buildings is obtained from property-valuation rolls and the content value is derived from insurance data. Damage and losses are calculated using Hazus software developed for FEMA. Losses are shown to be 53% higher than the SHM5 estimates. |
| first_indexed | 2024-03-08T20:43:26Z |
| format | Article |
| id | doaj.art-0e0fdbfaf03d4b258c3ee9ca9de5c2d9 |
| institution | Directory Open Access Journal |
| issn | 2624-795X |
| language | English |
| last_indexed | 2024-03-08T20:43:26Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | GeoHazards |
| spelling | doaj.art-0e0fdbfaf03d4b258c3ee9ca9de5c2d92023-12-22T14:11:29ZengMDPI AGGeoHazards2624-795X2023-10-014440642010.3390/geohazards4040023Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, CanadaPhilippe Rosset0Xuejiao Long1Luc Chouinard2Department of Civil Engineering, McGill University, Montreal, QC H3A 0C3, CanadaDepartment of Civil Engineering, McGill University, Montreal, QC H3A 0C3, CanadaDepartment of Civil Engineering, McGill University, Montreal, QC H3A 0C3, CanadaGreater Montreal is situated in a region with moderate seismic activity and rests on soft ground deposits from the ancient Champlain Sea, as well as more recent alluvial deposits from the Saint Lawrence River. These deposits have the potential to amplify seismic waves, as demonstrated by past strong, and recent weak, earthquakes. Studies based on the 2015 National Seismic Hazard Model (SHM5) had estimated losses to residential buildings at 2% of their value for an event with a return period of 2475 years. In 2020, the seismic hazard model was updated (SHM6), resulting in more severe hazards for eastern Canada. This paper aims to quantify the impact of these changes on losses to residential buildings in Greater Montreal. Our exposure database includes population and buildings at the scale of dissemination areas (500–1000 inhabitants). Buildings are classified by occupancy and construction type and grouped into three building code levels based on year of construction. The value of buildings is obtained from property-valuation rolls and the content value is derived from insurance data. Damage and losses are calculated using Hazus software developed for FEMA. Losses are shown to be 53% higher than the SHM5 estimates.https://www.mdpi.com/2624-795X/4/4/23seismic hazardseismic riskMontrealearthquake lossesHazusrisk mitigation |
| spellingShingle | Philippe Rosset Xuejiao Long Luc Chouinard Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada GeoHazards seismic hazard seismic risk Montreal earthquake losses Hazus risk mitigation |
| title | Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada |
| title_full | Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada |
| title_fullStr | Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada |
| title_full_unstemmed | Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada |
| title_short | Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada |
| title_sort | influence of the 2020 seismic hazard update on residential losses in greater montreal canada |
| topic | seismic hazard seismic risk Montreal earthquake losses Hazus risk mitigation |
| url | https://www.mdpi.com/2624-795X/4/4/23 |
| work_keys_str_mv | AT philipperosset influenceofthe2020seismichazardupdateonresidentiallossesingreatermontrealcanada AT xuejiaolong influenceofthe2020seismichazardupdateonresidentiallossesingreatermontrealcanada AT lucchouinard influenceofthe2020seismichazardupdateonresidentiallossesingreatermontrealcanada |