Tsunami Damage Mitigation Effects of “Hard” Measures in the Hinterland

Coastal dike should be constructed and maintained to prevent damage in the hinterland caused by the design tsunami, but can not always be constructed because ofland availability etc. Besides this, larger tsunamis may overtop thecoastal dikeand run up on the hinterland. In such cases, “hard” measures in the hinterlandas well as measures prompting resident's evacuation should be considered. The measures, such as forest zones, elevating land and secondary dikes, can mitigate damage to houses and humans through tsunami runup control in the hinterland. To realize the measures, we evaluated tsunami damage mitigation effects ofthe “hard” measures in the hinterland.