DEVELOPMENT OF TSUNAMI NUMERICAL MODEL CONSIDERING GENERATION AND VARIOUS TRANSPORT FORM OF THE DISASTER DEBRIS

Abstract

 A lot of debris by tsunami, such as cars, ships and collapsed buildings were generated in the 2011 off the Pacific coast of Tohoku Earthquake. It is useful for rescue and recovery after tsunami disaster to predict the amount and final position of disaster debris. The transport form of disaster debris varied such as drifting, rolling and sliding. These transport form needs to be considered comprehensively in tsunami simulation. In this study, the proposed numerical model considering disaster debris was compared with experiment for verification. And, the numerical model was applied for Kesennuma city where serious damage occurred by the 2011 Tohoku tsunami. As a result, the proposed model showed that it is necessary to take the disaster debris into account in order to predict tsunami inundation accurately.