Circulation and upwelling in Mackenzie Canyon, a dynamically wide submarine canyon in the Beaufort Sea ...
Mackenzie Canyon, in the southeastern Beaufort Sea, is a site for strong upwelling compared to the adjacent continental shelf and slope and potentially supplies the shelf with significant levels of nitrate. Research regarding the circulation and upwelling mechanisms in submarine canyons has previous...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2019
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| Online Access: | https://dx.doi.org/10.14288/1.0378375 https://doi.library.ubc.ca/10.14288/1.0378375 |
| Summary: | Mackenzie Canyon, in the southeastern Beaufort Sea, is a site for strong upwelling compared to the adjacent continental shelf and slope and potentially supplies the shelf with significant levels of nitrate. Research regarding the circulation and upwelling mechanisms in submarine canyons has previously been limited to dynamically narrow canyons, and most studies have used numerical models with idealized bathymetry. The main goal of the study presented in this thesis is to describe the circulation and upwelling in Mackenzie Canyon, which is classified as a dynamically wide canyon. This study also identifies key flow features that act as significant modifiers of upwelling, examines differences between idealized and realistic model simulations, and estimates the canyon-induced upwelling of nitrate. To address these goals, the circulation and upwelling associated with an upwelling event induced by an impulsive wind forcing in Mackenzie Canyon was simulated using a nested-grid modelling system configuration based ... |
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