Jacob Kukovica completed his Masters from the University of Western Ontario in the field of geophysics under the supervision of Dr. Sheri Molnar and Dr. Hadi Ghofrani.

Recent paleo-seismic evidence suggests at least three surface-rupturing events on the Leech River Fault (LRF) to have exceeded a moment magnitude (M) of

6 occurred within the last 9,000 years1,2. This fault poses considerable seismic risk due to its proximity to Victoria, British Columbia, and three hydroelectric

dams on southern Vancouver Island. We perform both Probabilistic and Deterministic Seismic Hazard Analyses (PSHA and DSHA, respectively) for Victoria with consideration of an active LRF source. In our PSHA study, we add an active LRF source to current 2015 National Building Code of Canada (NBCC) source zones with magnitude recurrence parameters based on fault- and region- specific seismicity catalogues. Ground motions are calculated for the synthetic fault earthquake catalogues using Ground Motion Prediction Equations based on western Canada crustal zones and fault sources. We find the LRF is the greatest hazard contributor at higher frequencies (≥ 10 Hz) with an average 16% increase in peak ground acceleration (PGA of 0.67 g) compared to 2015 NBCC PGA (0.58 g). DSHAs are accomplished using 3D finite-difference wave propagation simulations of two M 7 rupture scenarios

with different slip distributions and rupture directions.The low-frequency simulations (≤ 0.5 Hz) demonstrate a maximum peak ground velocity (PGV) of ~28 cm/s (very strong shaking) is expected for Victoria and ~7 cm/s PGV

(moderate shaking) across southern Vancouver Island. Rupture direction and depth of maximum slip contribute the greatest to the intensity of surface ground shaking.