Evaluation research for trapping floating objects during flood due to lignosa

通过实地调查和水力试验，探讨了海啸中树木对漂浮物的捕获机理。2011年东北大地震海啸现场调查从水力实验可以看出，当漂浮物作为一个群体流动时，即使它们的代表长度比树的间隔长度窄，它们也有可能被困住；可以找到相关的物理因素，最后提出一个简单的公式来评价捕集机理。

The trapping mechanism of floating objects during tsunami due to align trees was investigated through field survey and hydraulic experiments. From the field survey on The 2011 Tohoku-oki earthquake tsunami ; it was observed that when floating objects flow as a group, it is possible for them to be trapped even if their representative length is narrower than the interval length of trees, from the hydraulic experiments; it was possible to find the associated physical factors, and finally propose a simple formula to evaluate the trapping mechanism.