Seismic hazard and earthquake loss estimates for Greater Victoria
Martin P. Zaleski P.Geo., CEG
M.Sc. Candidate Department of Earth Sciences
Simon Fraser University
Modified after: Monahan, P.A., Levson, V.M., Henderson, P., & Sy, A. (2000). Quaternary geological map of Greater Victoria. BC Geological Survey Branch, Geoscience Map 2000-2.
Liquefaction susceptibility estimates based on criteria proposed by Youd and Perkins (1978) and recommended for use in HAZUS. Based on mapping by Monahan et al. (2000).
Modified after: McQuarrie, E.J. & Bean, S.M. (2000). Seismic slope stability map of Greater Victoria. BC Geological Survey Branch, Geoscience Map 2000-3c.
Note: Median ground motion prediction for M 7.2 earthquake on the Leech River Fault. No probability has been assigned to this scenario. PGA in g.
0.01
0.1
1
10
0.01 0.1 1 10
Sa (
g)
T (s)
M=7.1, 5 km, Reverse
Median PSA
Median PSA + 1 SD
Task 1 Build Shake Maps
Deterministic Scenarios
Amplification
Liquefaction & Landsliding
𝐿𝑛 𝑃𝑆𝐴(𝑇) = 𝛼1 𝑇 + 𝛼2 𝑇 𝑀 − 𝛽1 𝑇 + 𝛽2 𝑇 𝑀 ∙ 𝐿𝑛 𝑅𝑟𝑢𝑝 + 10 + 𝛾 𝑇 𝑅𝑟𝑢𝑝 + 𝜑 𝑇 𝐹 𝑆𝐸 = 1.28 + 0.05 ∙ 𝐿𝑛 𝑇 − 0.08 ∙ 𝑀
Task 2 Structural and Demographic Inventories
Scale and Resolution
• Census Tract
• Census Subdivision
• Point Features
Data
• Value (BC Assessment)
• Structural (BCA, UBC)
• Critical Facilities (CRD)
• Age, Income, Ethnicity (StatsCan)
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