A MODEL FOR PREDICTING THREE-DIMENSIONAL BEACH CHANGES AND GRAIN SIZE DISTRIBUTION OF BED MATERIALS AROUND WAVE SHADOW ZONE

Abstract

A model for predicting not only three-dimensional beach changes but also grain size distribution of bed materials was developed by applying the contour line change model. In this model, selective movement of fine and coarse sediments is taken into account, while assuming an equilibrium beach slope. The model was applied to the beach changes around Shimohara fishing port in Chiba Prefecture. Predicted contents of several grain sizes well agreed with measured values.