樹林帯と堤防の位置関係の違いが樹木破壊や津波減災効果に与える影響

概要

論文の詳細を見る
Coastal forest in large areas of the Tohoku and Kanto districts of Japan were destroyed by the Great East Japan tsunami on 11 March 2011. However, coastal forest had some ability to reduce the damage by a tsunami even when they were broken. The objective of this study is to estimate the tsunami mitigation when coastal forest was perfectly or partly broken, under the condition at which coastal forest and embankment co-exist. The tsunami mitigation effect becomes most significant, and the tree breakage ratio becomes smallest, when the embankment is on the land side, since tsunami which reduced by the embankment hits coastal forest. On the other hand, if coastal forest is in the sea side of the embankment, the breakage ratio becomes large and the tsunami mitigation effect becomes small, since tsunami hits coastal forest directly.
Japan Society of Civil Engineersの論文