2019.○○.○○○○○○○○○○○○○2023.2.21令和4年度成果発表会2023.2.21令和4年度成果発表会Every year, hundreds of thousands of peoples worldwide are affected by natural disasters. Among them, water related disasters such as flooding is one of the most common. Important point is that flooding caused by extreme rain is one of the costliest water-related disasters. It is clearly seen that extreme rain events and associated floods have been frequently experienced in Japan in recent years so that annual flood damage cost also increasing recently. Based on trends of such recent events, simulation, and projection of climate change for varying scenarios, there is a possibility thatthe frequency of flood events will increase in coming years. Hence, we need to focus our research on comprehensive disaster risk assessment in such a changing environment to enhance flood resilience and adoption.There are several stages and process for this research area. First one is intense observation: for example, real-time observation of radar rainfall. Next step is to conduct a hydrological analysis. Rainfall, as well as other references such as social network data, remote sensing datacan be used to obtain reliable inundation maps in near real time. Then, combining inundation map with social data and future climate scenario, verities of riskassessment can be provided in real time basis and that certainly enhance flood resilience and adaptation for future climate.At this stage, I have been working on different components in the framework of comprehensive disaster risk assessment. For example, new approach has proposed to extract river geometries of a river basin that plays a significant role for the hydrological response of the simulation to more closely match with reality. Similarly, flood inundation extent over flooded area was developed which is based on the quick survey data over the flood affected areas, known as the rapid-flood inundation mapping product and can be generated once the flood depth mark is known at any point within the flooded areas. A tool was developed that can quickly estimate the status of the land use profile, buildings, and road networks of any areas in Japan. Suchquick exposure assessment of a disaster events can be a useful reference for the warning, response, mitigation, and evaluation process. Similarly, new technique was purposed to identify the time and peak discharge using Hi-net data.This study is in the process of developing various methods and tools. In order to improve methods and tools for specific purposes, further research works will be performed in the coming days. There are some promising and important proposals for flood disaster prevention and management during heavy rain events, which are based on interdisciplinary subjects and will be actively promoted in the future. Finally, what I want to mention is that focusing research in interdisciplinary subject and research collaboration with considering future climate would be crucial be crucial to enhance flood resilience and adoption in a changing environment.動画概要⽔・⼟砂防災研究部⾨Shakti P. C.Enhancing Flood Resilience and Adaptation for Future Climate Change
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