SIMULATION OF LONG-TERM SHORELINE CHANGE DRIVEN BY LONGSHORE AND CROSS-SHORE SEDIMENT TRANSPORT
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How to Cite

Ding, Y., Kim, S.-C., Styles, R. B., & Permenter, R. L. (2020). SIMULATION OF LONG-TERM SHORELINE CHANGE DRIVEN BY LONGSHORE AND CROSS-SHORE SEDIMENT TRANSPORT . Coastal Engineering Proceedings, (36v), sediment.31. https://doi.org/10.9753/icce.v36v.sediment.31

Abstract

Driven by wave and current, sediment transport alongshore and cross-shore induces shoreline changes in coasts. Estimated by breaking wave energy flux, longshore sediment transport in littoral zone has been studied for decades. Cross-shore sediment transport can be significant in a gentle-slope beach and a barred coast due to bar migration. Short-term beach profile evolution (typically for a few days or weeks) has been successfully simulated by reconstructing nonlinear wave shape in nearshore zone (e.g. Hsu et al 2006, Fernandez-Mora et al. 2015). However, it is still lack of knowledge on the relationship between cross-shore sediment transport and long-term shoreline evolution. Based on the methodology of beach profile evolution modeling, a semi-empirical closure model is developed for estimating phase-average net cross-shore sediment transport rate induced by waves, currents, and gravity. This model has been implemented into GenCade, the USACE shoreline evolution model.

https://doi.org/10.9753/icce.v36v.sediment.31
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References

Abreu, T., et al. (2010). Coastal Eng., 57(7), 656-667.

Fernández-Mora, A., et al. (2015). Geophys. Res. Lett., 42, 2869–2877, doi:10.1002/2014GL063004.

Frey, A.E et al. (2012) GenCade version 1 Model theory and user’s guide. USACE, ERDC/CHL TR-12-25, 169 pp.

Hsu, T.J., et al. (2006), Coastal Eng., 53, 817-824.

Ruessink, B. G., et al. (2012). Coastal Eng., 65(7), 56-63.

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