Hydrological characteristics on the double row submerged-breakwater under construction in Niigata West Coast

Abstract

The double row submerged breakwater (DRSB) has been adopted in Yoriihama area in Niigata west coast to prevent the nourished sand from leaking through the channel locally scoured behind the submerged breakwater. Field observation for wave and currents around the DRSB was carried out, and the observation results have been compared with the results of physical model experiment conducted in their designing. As the effects of DRSB installation, it is confirmed that the wave transmission ratio of the DRSB satisfies the target value. However, the reduction of water level and current velocity behind the DRSB has not been clearly confirmed.