Abstract
About 30 years have passed since artificial beaches were built in Japan, and some maintenance problems were appearing in these beaches. This paper reports on the shoreline erosion of an artificial beach “Inage-no-Hama” in Chiba pref. The artificial beach is constructed in the reclaimed land, and there land subsidence is progressed in present. Beach profile change is analyzed by wave and land subsidence characteristics. As a result, it is found that beach erosion is strongly related to the land subsidence and the erosion rate by subsidence is about 30 percent against by waves.
