Abstract
Beach profile change in the foreshore zone was affected by wave-induced cross-shore sediment transport. Until now, the characteristics of cross-shore sediment transport in the swash zone at the Hasaki coast, Japan have been investigated, and a foreshore beach profile change model was proposed. The model was applied to the Hasaki coast, and it is reported that the shoreline change and the ground elevation change were reproduced with enough accuracy. In order to apply this model to different coasts, however, it needs to include the effect of beach slope on the wave characteristics. In the present study, the model was modified that the unknown parameters were used in the estimate equation of the maximum wave runup height, and the modified model was applied to the different coast with steep beach slope, i.e. coarse sediment diameter. The results were verified with observed field data and found that the model can correctly reproduce the ground elevation and shoreline changes. Thus it is suggested that the model could be used for different coasts by using parameters related to the sediment diameter of the coasts.
