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The 6th Generation Seismic Hazard Model of Canada

Session: Recent Engineering Uses of National Seismic Hazard Models I

Type: Oral

Date: 4/22/2021

Presentation Time: 02:00 PM Pacific

Description: 

Damaging earthquakes have and will inevitably occur again in Canada. Correctly estimating the hazard posed by these events is of critical importance to ensure that earthquake resistance engineering is appropriately distributed across Canada. Modelling earthquake hazard through probabilistic seismic hazard assessments provides a quantitative means of determining and planning for future losses. The latest hazard assessment, the 6th Generation Seismic Hazard Model of Canada (CanadaSHM6), was released in 2020 and is currently proposed to be the basis for seismic design values for the 2020 edition of the National Building Code of Canada. In general, the new model predicts higher seismic hazard in most regions across Canada. The model incorporates recent research on the rate of great Cascadia earthquakes, includes a new potentially active fault in southern Vancouver Island and incorporates the latest updates of the ground motion predictions of large earthquakes. For the first time, hazard values are also provided for a continuous range of site conditions (expressed in terms of V_S30), which expands the applicability of the results. The presentation will summarize the distribution of seismic hazard across Canada, describe the key new elements of CanadaSHM6 and provide perspective on future directions for Canadian seismic hazard models.

Presenting Author: Michal Kolaj

Student Presenter: No

Authors