An analytical model to predict dune and cliff notching due to wave impact

By: , and 
Edited by: Jane McKee Smith and Patrick Lynett

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Abstract

A model was developed to calculate the evolution of a notch in a dune or cliff due to wave impact. Analytical solutions were derived to the model for schematized conditions regarding forcing and dune/cliff properties. Comparisons were made with laboratory experiments where the time evolution of the notch was measured. Values of the transport coefficients in the analytical solutions were determined by least-square fitting the solutions to the laboratory data. Some of these coefficients could be related to the ratio between parameters describing the forcing and the dune/cliff strength. The evolution of the dune notch displayed a linear behavior at short times, whereas the cliff notch showed a more complex response for cases where a feedback between the notch and a beach formed seaward of the cliff occurred.

Publication type Conference Paper
Publication Subtype Conference Paper
Title An analytical model to predict dune and cliff notching due to wave impact
DOI 10.9753/icce.v32.sediment.35
Year Published 2011
Language English
Publisher American Society of Civil Engineers
Description 11 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title Proceedings of 32nd Conference on Coastal Engineering
Conference Title Coastal Engineering 2010
Conference Location Shanghai, China
Conference Date 2010
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