Influence of the 2020 Seismic Hazard Update on Residential Losses in Greater Montreal, Canada

Author:

Rosset Philippe1,Long Xuejiao1ORCID,Chouinard Luc1

Affiliation:

1. Department of Civil Engineering, McGill University, Montreal, QC H3A 0C3, Canada

Abstract

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.

Funder

Ministère de la sécurité publique du Québec

Publisher

MDPI AG

Subject

General Medicine

Reference33 articles.

1. Consequences on Residential Buildings in Greater Montreal for a Repeat of the 1732 M5.8 Montreal Earthquake;Rosset;Proceedings of the Canadian Society of Civil Engineering Annual Conference 2021. CSCE 2021,2023

2. A national seismic risk model for Canada: Methodology and scientific basis;Hobbs;Earthq. Spectra,2023

3. Hobbs, T.E., Van Ulden, J., Rotheram, D., Chow, W., LeSueur, P., Journeay, J.M., Ulmi, M., Ulmi, D., Fok, A., and Van de Valk, J. (2023, September 19). RiskProfiler. Geological Survey of Canada. Available online: www.RiskProfiler.ca.

4. (2023, June 20). AIR Study of Impact and the Insurance and Economic Cost of a Major Earthquake in British Columbia and Ontario/Quebec. Commissioned by the Insurance Bureau of Canada. Available online: https://docslib.org/doc/9800294/study-of-impact-and-the-insurance-and-economic-cost-of-a-major-earthquake-in-british-columbia-and-ontario-qu%C3%A9bec.

5. Seismic Vulnerability Assessment for Montreal;Yu;Georisk,2016

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3