航空測量データ等を用いた津波による河川堤防の侵食実態調査

抄録

Authors surveyed damage to river levees caused by tsunami triggered by the 2011 off the Pacific coast of Tohoku Earthquake. In this paper, characteristics of tsunami run-up and external force acting river levees during tsunami run- up were considered based on on-site survey, tsunami run-up simulation result, and aerial photos and so on. As a result, it was recognized that water cushion in land area would decrease damage of river levee by overtopping from river channel.