SWASH modelling of wave run-up in the Kingston Basin of Lake Ontario

Session: 51. - Coastal Resilience

Hadiseh Bolkhari, Queen’s University, [email protected]
Leon Boegman, QUEENS UNIVERSITY, [email protected]
Ryan Mulligan, Queen’s University, [email protected]
Carly Portch, Queen’s University, [email protected]

Abstract

The potential for flooding and wave run-up on coasts are natural hazards that must be determined prior to the approval of shoreline development.  However, prediction of wave run-up is not trivial and is not commonly assessed on rocky coasts. Crerar Park, a site on the Lake Ontario shoreline in Kingston, is exposed to large waves and is known to experience high wave run-up during storms. In this project, the phase-resolving and non-hydrostatic SWASH (Simulating WAves till Shore) model was applied to numerically simulate three-dimensional wave run-up at the park. SWASH was forced with waves and storm surge output, respectively, from SWAN (Simulating Waves Nearshore) and Delft3D models of Lake Ontario after validation with observations.  To understand seasonal variability in run-up dynamics, we compare wave transformation and run-up for different cases that include spring conditions (high water levels and small waves) and winter conditions (low water levels and large waves).

1. Keyword
modeling

2. Keyword
Lake Ontario

4. Additional Keyword
SWASH

5. Additional Keyword
Wave uprush

6. Additional Keyword
Kingston