Soreline recession accompanied with the construction of a headland on its surrounding beaches and its measures

An example of the Mochiishi coast in Simane Prefecture

Abstract

On the Mochiishi coast in Shimane Prefecture a headland was built as a countermeasure against beach erosion. Original beach width was narrow and the distance from the shoreline to the seawall was less than 20m. After the completion of the headland beach erosion proceeded on the surrounding beaches and wave overtoppoing above the seawall increased. This paper summarizes this situation and shows further measure to prevent from beach erosion and wave overtopping.