GEOSCAN Search Results: Fastlink

GEOSCAN Menu


TitleCanada's 5th generation seismic hazards model, as prepared for the 2015 national bulding code of Canada
AuthorAdams, J; Halchuk, S; Allen, T; Rogers, G
SourceProceedings of the 11th Canadian conference on earthquake engineering; 2015 p. 1-11
Year2015
Alt SeriesEarth Sciences Sector, Contribution Series 20150193
PublisherCanadian Association for Earthquake Engineering
Meeting11th Canadian conference on earthquake engineering; Victoria; CA; July 21-24, 2015
Documentbook
Lang.English
Mediapaper
File formatpdf
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectsgeophysics; earthquakes; earthquake risk; earthquake resistant design; earthquake foci; earthquake catalogues; models; seismic risk; seismic interpretations; health hazards; geological hazards
Illustrationslocation maps; tables; spectra
ProgramCanadian Hazard Information Service, Canadian Hazard Information Service
AbstractCanada's 5th Generation seismic hazard model has been developed to generate seismic design values for the 2015 National Building Code of Canada (NBCC2015). The model updates the earthquake catalog, consistently expresses earthquake magnitudes in terms of moment magnitude, revises earthquake source zones, and includes probabilistic treatment of Cascadia and other fault sources, all so as to estimate mean ground shaking at the 2% in 50-year probability level. Hence it takes advantage of contemporary scientific knowledge and replaces the 4th Generation 'robust' combination of alternative models used for NBCC2010 (for example, the hazard in southwestern BC was the higher of the H-probabilistic, the R-probabilistic or the Cascadia-deterministic model) by a fully probabilistic model. The ground-motion prediction equations (GMPEs) used represent a major advance over those used for the 4th Generation. Seismic design values (on Soil Class C at VS30=450 m/s) for PGA, PGV and for Sa(T) for T = 0.2, 0.5, 1.0, 2.0, 5.0, and 10.0 s are proposed for NBCC2015. Values for the longer two periods are possible because of the modern GMPEs, and they replace the 0.5*Sa(2.0) value used for T>4 s in 2010. In general, for locations in eastern Canada, the seismic hazard at long periods has increased while the seismic hazard at short periods has decreased - in some places significantly. For locations in western Canada, the seismic hazard at long periods has increased significantly for areas affected by great Cascadia interface earthquakes. In Haida Gwaii and the Yukon, the explicit inclusion of fault sources has also affected the estimated hazard.
Summary(Plain Language Summary, not published)
Canada's 5th Generation seismic hazard model has been developed to generate seismic design values for the 2015 National Building Code of Canada (NBCC2015). The model updates the earthquake catalog, consistently expresses earthquake magnitudes in terms of moment magnitude, revises earthquake source zones, and includes probabilistic treatment of Cascadia and other fault sources. It estimates mean ground shaking at the 2% in 50-year probability level. In general, for locations in eastern Canada, the seismic hazard at long periods has increased while the seismic hazard at short periods has decreased - in some places significantly. For locations in western Canada, the seismic hazard at long periods has increased significantly for areas affected by great Cascadia interface earthquakes. In Haida Gwaii and the Yukon, the explicit inclusion of fault sources has also affected the estimated hazard.
GEOSCAN ID296893