抄録
Surveys of damages caused by tsunamis originating from large-scale earthquakes, such as the Sumatra-Andaman earthquake and the Chile earthquake, have demonstrated individual tsunami protection effects of a coastal dune or coastal forest. However, as reported in surveys of damage from the Tohoku earthquake and tsunami, there has not yet been a sufficient evaluation of the disaster-mitigating effects in coastal areas where both coastal dune and forest are present. In this study, hydraulic experiments are conducted to investigate the combined disaster-mitigating effects of both coastal dune and forest. This study finds that the presence of a coastal dune and forest has a significant effect on the formation of reflected waves and shows a reduction in wave overtopping flow.
