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http://dx.doi.org/10.3741/JKWRA.2020.53.12.1119

Development of regression functions for human and economic flood damage assessments in the metropolises  

Lim, Yeon Taek (Department of Civil Engineering, Yeungnam University)
Lee, Jong Seok (Department of Civil Engineering, Yeungnam University)
Choi, Hyun Il (Department of Civil Engineering, Yeungnam University)
Publication Information
Journal of Korea Water Resources Association / v.53, no.12, 2020 , pp. 1119-1130 More about this Journal
Abstract
Flood disasters have been recently increasing worldwide due to climate change and extreme weather events. Since flood damage recovery has been conducted as a common coping strategy to flood disasters in the Republic of Korea, it is necessary to predict the regional flood damage costs by rainfall characteristics for a preventative measure to flood damage. Therefore, the purpose of this study is to present the regression functions for human and economic flood damage assessments for the 7 metropolises in the Republic of Korea. A comprehensive regression analysis was performed through the total 48 simple regression models on the two types of flood damage records for human and economic costs over the past two decades from 1998 to 2017 using the four kinds of nonlinear equations with each of the six rainfall variables. The damage assessment functions for each metropolis were finally selected by the evaluation of the regression results with the coefficient of determination and the statistical significance test, and then used for the human and economic flood damage assessments for 100-year rainfall in the 7 metropolises. The results of this study are expected to provide the basic information on flood damage cost assessments for flood damage mitigation measures.
Keywords
Flood; Human damage cost; Economic damage cost; Damage assessment; Rainfall; Regression analysis;
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