Abstract
Shoreward transport of sand originally supplied from the offshore zone of the tidal flats, while forming a slender sand bar, and the landing of such sand were observed on the Kutsuo coast, where very wide tidal flats develop. Although this landward sand movement due to waves on the shallow tidal flats is part of the returning process of sand transported offshore by river currents during floods, its mechanism has not yet been studied. We investigated this phenomenon by considering the Kutsuo coast as an example. Then, we performed numerical simulation using the BG model to predict such shoreward sand movement. The observed phenomena were successfully explained by the results of the numerical simulation.
