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TitleA profile of earthquake risk for the District of North Vancouver, British Columbia
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AuthorJourneay, J M; Dercole, F; Mason, D; Westin, M; Prieto, J A; Wagner, C L; Hastings, N L; Chang, S E; Lotze, A; Ventura, C E
SourceGeological Survey of Canada, Open File 7677, 2015, 224 pages, https://doi.org/10.4095/296256
Year2015
PublisherNatural Resources Canada
Documentopen file
Lang.English
Mediaon-line; digital
RelatedThis publication contains the following publications
File formatpdf
ProvinceBritish Columbia
NTS92G/06; 92G/07
AreaVancouver; North Vancouver
Lat/Long WENS-123.1333 -122.8667 49.4167 49.3000
Subjectsgeophysics; earthquakes; earthquake risk; earthquake studies; seismicity; seismic risk; seismic velocities; earthquake catalogues; seismic zones; seismic velocities; earthquake magnitudes; strong motion seismology; health hazards; building codes; flood potential; flood plains; HAZUS; geological hazards
Illustrationslocation maps; tables; cartoons; graphs; photographs; flow charts; block diagrams; histograms; pie charts
Viewing
Location
 
Natural Resources Canada Library - Ottawa (Earth Sciences)
 
ProgramQuantitave risk assessment project, Public Safety Geoscience
Released2015 05 01
AbstractThe societal costs of natural hazards are large and steadily increasing in Canada due to increased urban development, an aging infrastructure, and limited capacities to anticipate and plan for unexpected disasters. Lessons learned from recent disasters underscore the need for a comprehensive risk-based approach to land use planning and emergency management at all levels of government-one that utilizes available knowledge about the risk environment to inform actions that have a potential to minimize future disaster losses and increase the resilience of communities to the dynamic and uncertain forces of change.
We cannot predict or prevent earthquakes from happening. However, we do have the knowledge and capabilities to change the outcome of earthquake disasters through a combination of risk assessment and disaster resilience planning. Risk assessment is the process through which knowledge about a community and its exposure to natural hazards is used to anticipate the likely impacts and consequences of an unexpected event at some point in the future. Disaster resilience planning is focused on actions that can be taken in advance to balance policy trade offs for growth and development (opportunities) with risk reduction investments that have a potential to minimize future losses (liabilities) while increasing capabilities of a community to withstand, respond to and recover from unexpected disaster events (resilience).
This study provides a detailed assessment of earthquake risk for the District of North Vancouver - an urban municipality of approximately 83,000 people situated along the North Shore Mountains in southwestern British Columbia. It describes the probable impacts of a significant earthquake with greater clarity and detail than ever before, and develops both a methodology and target criteria to guide future risk reduction and disaster resilience planning activities through the lens of building performance, public safety, lifeline resilience and socioeconomic security. We examine cause-effect relationships and seismic risks for a plausible earthquake scenario in the Strait of Georgia (M7.3), and undertake a more general assessment of who and what are vulnerable to known earthquake hazards in the region using probabilistic ground motion models that are consistent with those used to establish seismic safety guidelines in the National Building Code of Canada (NBCC, 2010).
Study outputs offer a capacity to explore thresholds of risk tolerance and opportunities for mitigation through ongoing emergency planning and land use decision-making activities in the community. Methodologies and insights gained through this study are transferrable to other communities who may face similar challenges of managing growth and development in areas exposed to earthquake hazards. Key findings and recommendations of the study contribute to broader efforts led by the Canadian Safety and Security Program to support disaster resilience planning at a community level in Canada.
Summary(Plain Language Summary, not published)
Costs of natural hazard disasters are increasing in Canada due to development in hazard prone areas; aging infrastructure; climate change; and capacities to anticipate and plan for disasters. Recent disasters underscore the need for a risk-based approach to land use planning and emergency management. This study provides an assessment of earthquake risk for the District of North Vancouver, an urban municipality in southwestern British Columbia. It describes the probable impacts of a significant earthquake and develops a methodology to guide disaster resilience planning, by building a capacity for thresholds of risk tolerance, mitigation strategies and to help plan for disaster response and recovery. Insight and methodologies from this study are transferrable to other communities exposed to earthquake hazards. This work contributes to Defence Research and Development Canada¿s all-hazard risk assessment framework to support disaster resilience planning at a national scale.
GEOSCAN ID296256