2025 Volume 81 Issue 16 Article ID: 24-16072
In Japan, various disasters occur wholly every year. There is a growing concern about the significant damage caused by spatial/temporal chained multi-hazards, in which multiple disasters occur simultaneously, disrupting infrastructure systems. This study aims to investigate and analyze case studies of temporal chained multi-hazards as a first step in studying spatial/temporal chained multi-hazards, and to evaluate multi-hazard risks with a focus on water treatment plant (WTP). To achieve this, we conducted field surveys on the temporal chained multi-hazards related to WTP due to the heavy rains in Shizuoka Prefecture in 2022, and Akita in 2023. Additionally, we evaluated the disaster occurrence potential for WTP in Japan using various hazard maps. As a result, we confirmed the damage potential due to some form of disaster in a lot of WTPs.
