Earticle

초록

영어

In many disaster-prone regions, residents often choose to remain in place despite recurring hazards due to economic constraints, livelihood dependency, and social attachments. While staying exposed to continued risk, relocation represents a trade-off between improved safety and uncertain economic costs. Such a phenomenon poses a significant challenge for governments in urban disaster management and public resources allocation. To address this complexity, this study aims to propose a decision-making framework. The framework integrates economic evaluation into spatial planning to analyze the feasibility of different mitigation strategies. This study supports the evaluation of relocation policies and informed decision-making in high-risk areas. The research focuses on the affected area of the Mataian Creek incident that occurred in September 2025 in Hualien. This documented event serves as the baseline for the analysis. The methodology is structured into two parts. First, we use GIS for the spatial analysis to reconstruct the verified extent of the affected area. By overlaying the actual flood footprints with building data, the study identifies the spatial exposure of the settlement. It also categorizes specific types of structures, such as residential dwellings and public infrastructure. Second, we apply an economic evaluation to develop a comparative cost estimation method. This method contrasts proactive relocation costs, including land acquisition and new construction, with the actual post-disaster damage losses recorded during the 2025 event. The research applies simulation to determine whether early relocation would have reduced total economic loss. The findings show the difference in cost effectiveness between active mitigation and reactive recovery. Furthermore, the results highlights the potential for long-term fiscal savings by reducing the need for repeated reconstruction efforts. This study provides a practical framework to assist urban planners in optimizing budget distribution. It ensures that limited resources are directed toward the most effective prevention strategies for regions with verified disaster potential.

저자

• Chi-Chun Lin [ Department of Architecture and Building Science, Graduate School of Engineering, Tohoku University; International Research Institute of Disaster Science, Tohoku University ]
• Osamu Murao [ Department of Architecture and Building Science, Graduate School of Engineering, Tohoku University; International Research Institute of Disaster Science, Tohoku University ]
• Yun-Chi Yu [ Department of Architecture and Building Science, Graduate School of Engineering, Tohoku University; International Research Institute of Disaster Science, Tohoku University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국재난정보학회 학술발표대회

• 간기

  부정기

• 수록기간

  2005~2026

• 십진분류

  KDC 338 DDC 361