CGRG Bibliography of Canadian Geomorphology
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Author : Cloutier, M.; and Hequette, A.
Date : 1994
Title : Storm surge effects on a sandy barrier coast, Tuktoyaktuk Peninsula, N.W.T., Canada
Publication : Presented at the 3rd International Conference on Geomorphology, McMaster University, Hamilton, Ontario, August, 1994.
Issue :
Page(s) :
Abstract
The coast of the Tuktoyaktuk Peninsula, southern Canadian Beaufort Sea, is affected by positive and negative storm surges which cause significant sea level set-up and set-down. The retreat of sandy coastal accumulation landforms in that area is usually attributed to overwash processes occurring during episodic positive surges. A study carried out on northwest facing spits and barrier islands near Atkinson Point, on the Tuktoyaktuk Peninsula, showed that significant landward-directed eolian sand transport occurs during negative surges, suggesting that this process may represent a major mechanism contributing to the onshore migration of the barriers. Beach profiles surveyed before and after a negative storm surge accompanied by northerly winds showed that eolian deflation took place across the barriers during the set-down in sea level at the coast, resulting in important sand transport to the backbarrier lagoon. During one summer, eoliantransport accounts for up to 30% of the sediment transported in the lagoon on the landward shore of the barriers, the rest of the transport being due to overwash processes.
Bibliography of Canadian Geomorphology