Study of a Flood Vulnerability Assessment for Climate Change and Utilizing the Vulnerability-based Disaster Response in Jeju-do

The objective of this research was to apply the flood vulnerability assessment to ungauged reservoirs for prioritizing and evaluating the reservoir rehabilitation according to climate change. The flood vulnerability index (FVI) can quantitatively compare the flood vulnerabilities of the analysis targets and can be used for the relative comparison of hydraulic structures to determine the reinforcement priority. In this study, we proposed a simple FVI that contained exposure and adaptive capacity of the hydraulic structure. We selected ten dam heightening reservoirs in Korea and constructed data for flood vulnerability assessment. The FVI was calculated before and after the dam heightening to analyze the priority and effect of reservoir rehabilitation under climate change. Flood vulnerability indices were estimated for four periods (1995s: 1981–2010, 2025s: 2011–2040, 2055s: 2041–2070, 2085s: 2071–2100) and before/after the dam heightening project. As a result, flood vulnerability indices decreased after the dam heightening project for all reservoirs, and the indices have increasing tendencies in the future. The indices developed in this study can be useful to determine the priority and to evaluate the effect of rehabilitation for hydraulic structures.

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Comparison of Flood Vulnerability Assessment Outcomes by Classification Schemes for Vulnerability Components to Climate Change

Korean Society of Hazard Mitigation ◽

10.9798/kosham.2018.18.3.221 ◽

2018 ◽

Vol 18 (3) ◽

pp. 221-229

Author(s):

Jong Seok Lee ◽

Hyun Il Choi

Keyword(s):

Climate Change ◽

Vulnerability Assessment ◽

Flood Vulnerability ◽

Classification Schemes ◽

Assessment Outcomes ◽

Flood Vulnerability Assessment

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Assessment of Aggregation Frameworks for Composite Indicators in Measuring Flood Vulnerability to Climate Change

Scientific Reports ◽

10.1038/s41598-019-55994-y ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 2

Author(s):

Hyun Il Choi

Keyword(s):

Climate Change ◽

Comparative Analysis ◽

Vulnerability Assessment ◽

Coastal Areas ◽

Composite Indicators ◽

Flood Vulnerability ◽

Vulnerability To Climate Change ◽

Assessment Outcomes ◽

The Republic ◽

Flood Vulnerability Assessment

AbstractThe IPCC Third Assessment Report presents a conceptual framework for vulnerability to climate change with the three attribute components of exposure, sensitivity, and coping. Since the vulnerability assessments have been conducted mainly by the composite indicators aggregated from the IPCC’s components, it is necessary to assess aggregation frameworks for constructing the composite indicators that have an influence on vulnerability assessment outcomes. This study therefore investigates the robustness of assessment outcomes for flood vulnerability to climate change through a comparative analysis of the six vulnerability indicators aggregated from the IPCC’s components by the conventional aggregation frameworks. The comparative analysis has been illustrated through both the possible combinations of reference values for vulnerability attribute components and a case study on the flood vulnerability assessment to climate change for coastal areas in the Republic of Korea. The study demonstrates that there can be large fluctuations and reversals in ranking orders across the six vulnerability outcomes by different aggregation frameworks. It concludes that for flood vulnerability assessment to climate change in coastal areas, the vulnerability indicator needs to be aggregated by a multiplicative utility function from all the three assessment components with positive elasticity to vulnerability.

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