DEMOGRAPHIC STATISTICS BY LIVING SITUATION IN DISASTER RISK AREAS BASED ON POPULATION CENSUS MICRO DATA

Taku NAKANO · Shuichi TAKEYA

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Earthquake and Disaster Impact Studies Disaster Management and Resilience Flood Risk Assessment and Management

Abstract

This thesis presents an analysis of data from Japan's 2020 national census, estimating population and households in disaster-prone regions. These regions include flood-risk areas, tsunami-vulnerable zones, and sediment disaster areas. In Level 2 flood risk areas, around 50.4 million people reside, with nearly half in multi-unit housing and 28% living above flood depths. Approximately 8.2 million people inhabit tsunami-prone areas, and 5.3 million people live in sediment disaster hazard zones. Major cities in disaster-prone areas have a large population, but a significant portion of residents resides in multi-unit housing, which doesn't always correlate directly with higher disaster risks.

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