| Title | Canada's 5th generation seismic hazard model, as prepared for the 2015 National Building Code of Canada |
| |
| Author | Adams, J ;
Halchuk, S; Allen, T I; Rogers, R |
| Source | 11th Canadian Conference on Earthquake Engineering, abstracts; by Canadian Association for Earthquake Engineering; 2015 p. 1 |
| Year | 2015 |
| Alt Series | Earth Sciences Sector, Contribution Series 20150117 |
| Publisher | Canadian Association for Earthquake Engineering |
| Meeting | 11th Canadian Conference on Earthquake Engineering; Victoria; BC; July 21-24, 2015 |
| Document | book |
| Lang. | English |
| Media | paper |
| Province | British Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut; Canada |
| NTS | 1; 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 |
| Subjects | geophysics; earthquakes; earthquake risk; earthquake resistant design; earthquake foci; earthquake catalogues; models; seismic risk; seismic interpretations; health hazards |
| Program | Canadian Hazard Information Service |
| Abstract | 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, 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 ID | 296702 |
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