BEACH CHANGES ON HIARI-URA COAST IN CHIBA PREFECTURE

Abstract

 Beach changes on the Hiari-ura coast facing the Pacific Ocean were investigated. This coast is located south of Taito Sea cliff and the sand supply from this coast is considered to be one of the supply sources to Kujukuri Beach, because the sand supply from the Isumi River flowing into this coast can be expected. The shoreline changes were studied using aerial photographs and grain size distribution was measured by sampling of beach materials. It was found that the sand supply from this coast has been exhausted and further sand supply can not be expected.