Field Experiment on Recovery of Sandy Beach by Gravel Nourishment on Ninomiya Coast

Abstract

Beach nourishment using coarse material has been carried out since 2012 on the Ninomiya coast, where beach was severely eroded owing to storm waves associated with Typhoon No. 9 hit on September 6, 2007. Beach nourishment was carried out in the area separated by two groins 300 m apart. After the beach nourishment, stable sandy beach was recovered and 89.9% of nourishment gravel was found to be left, implying the effeciency of beach nourishment using coarse material.