STUDY ON EVACUATION INDUCTION DURING TSUNAMI DISASTER AND REGIONAL VULNERABILITY ASSESSMENT

Abstract

 We focused on the information of tsunami inundation and GIS obtained before the initiation of evacuation in order to evacuate evacuees to evacuation facilities smoothly. In this study, we examined effects of prior information of tsunami arrival time and road blockage against the evacuation. Moreover, we evaluated the vulnerability of the city against tsunami based on the heavily-used route and the death rate at evacuation start position. By giving tsunami inundation information and GIS information to the evacuees as prior information, evacuation without death due to a tsunami encounter and re-searching road due to its blockage were suceeded. We conducted the simulation using this method at Nakatosa, Kouchi prefecture, then confirmed that the dearh rate of evacuees which started evacuation immediately after the tsunami arrival time was reduced. Moreover, using our method, we revealed that there are differences in use rate of evacuation route. We also confirmed that death rate become high in the areas that many road obstructions are existed.