Abstract
On the Imagire-guchi tidal inlet, a jetty was constructed between 1964 and 1974, and an ebb tidal delta has developed due to the interuption of westward longshore sand transport. Such westward longshore sand transport was considered to be kept again with the development of the ebb tidal delta. Although a large topographic changes occurred in this area, it is important to understand the real situation of the beach around this inlet. For this purpose, past aerial photographs were gethered, and the shoreline changes since 1972 were investigated in detail. As a result, westward longshore sand transport is continuously maintained around the marginal area of the ebb tidal delta, and longshore sand transport was estimated to be 1.21×105 m3/yr at the Arai coast west of the inlet.
