Development of Tsunami Hazard Map for Supporting Evacuation Guidance in Tsunami

Abstract

We developed a tsunami hazard map for supporting evacuation guidance which is intended for government use. The evacuation behavior simulator achieved in making changes in every moment with an analysis that unifies evacuation behavior simulation and tsunami propagation simulation, as this enables the calculation of the difficult evacuation zones. This paper offers a practice case study for Shimizu ward, Shimizu city, Shizuoka prefecture, in Japan. The difficult evacuation zone was around Yokosuna-nishi-machi in the northwest part of the study site. The simulation conditions included walking speed and evacuation direction, which was verified for this difficult evacuation zone. This is effective for evacuation toward inland, especially elevated ground which doesn’t become inundated by tsunami. In this paper, the results of simulations were reflected in a hazard map. Then we propose the hazard map as intended for the government, for supporting evacuation guidance in a tsunami.