DEVELOPMENT OF A DUNE EROSION MODEL USING SUPERTANK DATA

Margery F. Overton, John S. Fisher, Kyu-Nam Hwang

Abstract


A model predicting dune erosion under storm conditions has been developed using data from SUPERTANK laboratory experiments. In this model, the swash approach is applied with the basic assumption that the volume eroded from the dune is a function of the swash force acting on the dune. The swash force is characterized with swash parameters, specifically the swash height, the swash velocity and the swash period. For given storm conditions, the model predicts wave height variation across-shore, swash height variation on the beach face, swash velocity, swash period, swash forces and finally volume eroded at the dune. Predictions of swash parameters and dune erosion are compared with measurements from SUPERTANK laboratory experiments.

Keywords


SUPERTANK; dune; erosion; erosion model

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