Mitigation of Long Waves by means of Submerged Artificial Breakwaters Built upon a Mild–Slope Beach – A Numerical Study

摘要

It has been a crucial issue on how to mitigate long waves byintroducing artificial breakwaters. Since some tremendous and tragictsunami hazards occurred in decade are still vivid in people’s memory,the topic related to the attenuation of long waves is of great importance.This study presents some preliminary results obtained from numericalsimulations to estimate the possible mitigation of long waves by meansof submerged breakwaters built upon a sloping beach. Our goal is tounderstand the capability and the optimal location of underwaterbreakwaters on reducing the run–up height due to long waves.