2019 年 33 巻 p. 199-206
In the Heda area, Numazu City, Shizuoka prefecture, the arrival of a tsunami is predicted immediately after the occurrence of the Nankai Trough earthquake. In this study, we evaluated the safety of tsunami evacuation by measuring the time margin of evacuation with consideration of road blockage due to building collapse in the assumed flooded area of Heda district. We also showed that safety of tsunami evacuation can be improved by strengthening the redundancy of evacuation routes by utilizing low-use land.