| Autor: |
Lawrence, Martin, McCann, Martin, Ostenaa, Dean, LaForge, Roland, Wong, Ivan, Olig, Susan, Zachariasen, Judith, Unruh, Jeff, Lettis, William, Hanson, Kathryn, Youngs, Robert, Swan, Bert, Clague, John |
| Rok vydání: |
2014 |
| DOI: |
10.4231/d32v2cb1n |
| Popis: |
The BC Hydro Seismic Source Characterisation (SSC) model is one of the first large PSHA projects to fully implement the Senior Seismic Hazard Assessment Committee (SSHAC) Level 3 study approaches to seismic source characterisation. It is also the only non-nuclear application of these approaches conducted to date. The BC Hydro infrastructure, consisting of 41 hydroelectric dams, to which the seismic source model will be applied, has broad spatial extent across the province of British Columbia, but several critical dam sites are also spatially concentrated. Although the SSC model study region extends well beyond the province and the geographic limits of the hydroelectric system, seismic source model development focused on key sub-regions of most significance to critical BC Hydro assets. Based on the initial project database, which included an overlay of critical BC Hydro dam sites and guided by a conceptual tectonic framework developed for the project, the SSC team was organised into plate boundary, coastal and interior regional sub-teams to identify and refine seismic source characterisations in areas most critical to BC Hydro. The SSHAC process directed the SSC team interactions with topical, regional and local subject matter experts, in both proponent and resource roles. The study region for the seismic source model includes areas and features which are relatively rich in data and prior studies, such as the Cascadia subduction zone and the densely populated southwest coastal region, as well as comparatively less studied areas of the BC Interior where applicable seismotectonic data are relatively sparse. The SSC team evaluated geologic, geodetic, geophysical and seismicity data for their potential applicability across the study region in order to develop an integrated model for predicting future earthquake occurrences. This process of evaluation and integration lead the SSC team to develop new approaches and analyses in order to represent the full range of seismic source models credible to the informed technical community. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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