CGRG Bibliography of Canadian Geomorphology
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Author : Collier, A.; Ozkan-Haller, H.; and Smith, D.
Date : 2006.
Title : The simulation of a severe storm event at Lake Athabasca, Canada.
Publication : Eos Transactions. American Geophysical Union 87(36), Ocean Sci. Meet. Suppl., Abstract
Issue : 87(36), Ocean Science Meeting Supplement:
Page(s) :
Abstract
Ground-penetrating radar stratigraphy of the Williams River delta on the southern shore of Lake Athabasca, Canada, suggests that the delta experienced several pronounced erosion events (Smith et al, 2004). These events are characterized by the erosion of between 3x106 m3 and 6x106 m3 of sand from the shelf of the delta eastward during a storm event. In this study, our objective is to assess the magnitude and duration of a potential storm that could result in the projected erosion. We are simulating possible storm events and are concentrating on the predominant northwesterly storm approach. We are utilizing a state-of-the-art wave generation/propagation model to assess wave growth and shoaling/refraction over the lake. Subsequently, a circulation model is utilized to assess the strength of the resulting longshore currents due to both wave forcing as well as wind-induced pressure gradients. Finally, we assess the transport potential of these currents using a simple transport formulation that assumes that the waves suspend the sediment and currents transport it. We report on required storm magnitude and duration.
Bibliography of Canadian Geomorphology