An analytical model to predict dune and cliff notching due to wave impact
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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.
Suggested Citation
Larson, M.P., Sunamura, T., Erikson, L.H., Bayram, A., and Hanson, H., 2011, An analytical model to predict dune and cliff notching due to wave impact, in Proceedings of 32nd Conference on Coastal Engineering, Shanghai, China, 2010, 11 p., https://doi.org/10.9753/icce.v32.sediment.35.
| 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 |
| Publication Date | January 25, 2011 |
| 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 |