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Storm-induced deformations of barred beach slope
- Authors: Leont’yev I.O.1
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Affiliations:
- Shirshov Institute of Oceanology, Russian Academy of Sciences
- Issue: Vol 59, No 1 (2019)
- Pages: 125-132
- Section: Marine Geology
- URL: https://journals.eco-vector.com/0030-1574/article/view/11833
- DOI: https://doi.org/10.31857/S0030-1574591125-132
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Abstract
It is shown that behavior of the multiple-bar system during a storm can be described in frameworks of the model assuming that bars move toward the sea with almost the same mean speed, while the over-bar depths increase in accordance with the local bed slope. Analysis of suspended-sediment balance over the bar crest leads to expression for the bar movement speed, which demonstrates very strong dependence on ratio of wave height to the over-bar depth. Using empirical criterion of bar activity the model suggested is capable assess the bar displacement during a storm action and predict the post-storm bed profile. Comparison with the published field data leads to conclusion that the computed and observed storm-induced deformations of barred beach slopes are in satisfactorily agreement.
About the authors
I. O. Leont’yev
Shirshov Institute of Oceanology, Russian Academy of Sciences
Author for correspondence.
Email: igor.leontiev@gmail.com
Russian Federation, Moscow
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