[A-OS11] Continental Oceanic Mutual Interaction - Planetary Scale Material Circulation

[AOS11-P07] Applicability of in-situ SAR data during flood disaster into past fatal flood disaster

*Kiana Tomita¹, Naruo Kanemoto², Yosuke Alexandre Yamashiki¹ (1.Graduate School of Advanced Integrated Studies in Human Survivability, 2.Space Shift, Inc.)

Keywords:SAR, Evacuation, Flood Disaster

The difference between life and death in a flood disaster largely depends on whether or not information about the flood depth reaches the local government and, more specifically, whether or not the information reaches the respective disaster-prevention communities. On the other hand, during a flood disaster, many communities are unable to carry out evacuation due to the lack of appropriate communication of forecasted rainfall data and river level data, which serve as the basis for evacuation decisions.

In this study, to evaluate how Earth observation technology, especially SAR data, can contribute to these cases, we will focus on past fatal flood disasters in Japan (Okayama flood in 2018 and Kuma River flood in 2020) and examine the evacuation actions at the community level as well as the predefined disaster prevention timeline (or evacuation action plan). The study will examine the extent to which river level data and flood data from SAR could have reduced damage if properly disseminated, and examine the future of disaster prevention timelines by referring to communications systems in past flood disasters in Japan (Okayama flood in 2018 and the Kuma River flood in 2020).