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The Deduction of Urban Flood Risk Factor Considering Climate Change

  • Crisisonomy
  • Abbr : KRCEM
  • 2011, 7(1), pp.125-142
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

김보경 1 JANG DAE WON 1 장남 2 양동민 2

1인하대학교
2인천대학교

Candidate

ABSTRACT

In 2001, one large-scale concentrated rainfall happened in Seoul. The area was hit with sudden and unexpected downpours, and since then the Extreme Flood appeared. After that, the occurrence frequency of rainfall with local, short-term and flash characteristics is increasing rapidly. Usually, the damage study on urban flood is investigated from the change of runoff rate as a result of rainfall increase and urbanization. However, the induction factor due to such damage has nothing to do with the real amount of the damage. It means when it is rainfall, flood will discharge, so it is possible to make flood damage. When we judge the damage scale, the amount of the damage always was considered. So we should select weight factors that can reduce damage. On the premise of it, items having connection with the urban flood damage were considered in this study such as society, economic, cultural, facilities and meterological fields. There are 24 selected factors in this study. Urban flood risk was investigated generally according to the climate change, related analysis to the amount of the flood damage was fulfilled, at last 10 items were selected and their factorial analysis were made. Four factors have been extracted and the Explanation Power was 67.79%. It was classified into four parts. The first factor was rainfall, the second one was Cultural-Social field, the third one was economy and the last one was flood damage. Through this study, obtained results are the inducing factor of urban flood damage is Rainfall, the weight factors are Cultural-Social and economic aspects, and the inundated area under this damage is also should be paid attention and checked when Urban flood happen. This is the framework of the deduction of Urban Flood Risk Factor.

Citation status

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