Abstract
Tsunami debris has potential to induce damages of buildings and tsunami fire. However, methods to evaluate the risks of tsunami debris have not yet been established. This study attempted to make data sets for numerical simulation about tsunami debris. The data sets were estimated range, volume and weight of tsunami debris due to the great east Japan earthquake. The range of tsunami debris was estimated using aerial photography. The volume and weight were estimated from the reports of local government. The situation of tsunami debris was difference in areas. Comparison of the estimated results of tsunami debris between the three areas, Rikuzentakata-city, Kesennuma-city and Watari-town, showed that coastal dikes restrained tsunami debris moving offshore. Additionally, tsunami debris was distributed in a wide range in case of the wide inundation area.
