Browse > Article
http://dx.doi.org/10.3741/JKWRA.2019.52.10.729

Flood vulnerability analysis in Seoul, Korea  

Hwang, Nanhee (Department of Civil Engineering, Hoseo University)
Park, Heeseong (Department of Land, Water and Environment Research, Korea Institute of Civil engineering and building Technology (KICT))
Chung, Gunhui (Department of Civil Engineering, Hoseo University)
Publication Information
Journal of Korea Water Resources Association / v.52, no.10, 2019 , pp. 729-742 More about this Journal
Abstract
Natural disasters such as floods has been increased in many parts of the world, also Korea is no exception. The biggest part of natural damage in South Korea was caused by the flooding during the rainy season in every summer. The existing flood vulnerability analysis cannot explain the reality because of the repeated changes in topography. Therefore, it is necessary to calculate a new flood vulnerability index in accordance with the changed terrain and socio-economic environment. The priority of the investment for the flood prevention and mitigation has to be determined using the new flood vulnerability index. Total 25 urban districts in Seoul were selected as the study area. Flood vulnerability factors were developed using Pressure-State-Response (PSR) structures. The Pressure Index (PI) includes nine factors such as population density and number of vehicles, and so on. Four factors such as damage of public facilities, etc. for the Status Index (SI) were selected. Finally, seven factors for Response Index (RI) were selected such as the number of evacuation facilities and financial independence, etc. The weights of factors were calculated using AHP method and Fuzzy AHP to implement the uncertainties in the decision making process. As a result, PI and RI were changed, but the ranks in PI and RI were not be changed significantly. However, SI were changed significanlty in terms of the weight method. Flood vulnerability index using Fuzzy AHP shows less vulnerability index in Southern part of Han river. This would be the reason that cost of flood mitigation, number of government workers and Financial self-reliance are high.
Keywords
AHP; Flood vulnerability; Fuzzy AHP; PSR structure;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Organization for Economic Cooperation and Development (OECD) (1991). Environmental indicators. A preliminary set. Paris, France.
2 Park, J. H. (2013). Flood vulnerability based on bias-corrected RCP scenarios at a Si-Gun Level. Doctoral degree Thesis, Seoul National University Graduate school Department of landscape architecture and rural system engineering (February).
3 Saaty, T. L. (1977). "A scaling method for priorities in hierarchical structures." Journal of Mathematical Psychology, Vol. 15, No. 3, pp. 234-281.   DOI
4 Shin, J. Y., Park, Y. J., and Kim, T. W. (2014). "Evaluation of inland inundation risk in urban area using fuzzy AHP." Journal of the Korea Water Resources Association, KWRA, Vol. 47, No. 9, pp. 789-799.   DOI
5 Son, M. W., Sung, J. Y., Chung, E. S., and Jun, K. S. (2011). "Development of flood vulnerability index considering climate change." Journal of the Korea Water Resources Association, KWRA, Vol. 44, No. 3, pp. 231-248.   DOI
6 Song, J. H., Kim, S. D., Park, M. J., and Choi, H. I. (2013). "Estimation of flood risk index for the nakdong river watershed." Journal of the Korea Water Resources Association, KWRA, Vol. 46, No. 1, pp. 35-45.   DOI
7 Zadeh, L. A. (1965). "Fuzzy set." Information and Control, Vol. 8, pp. 338-390.   DOI
8 Choi, H. I., Park, S. Y., Song, J. H., and Park, M. J. (2013). "Identification of flood risk areas using a multi-criteria decision making method." Journal of the Korean Society of Hazard Mitigation, Vol. 13, No. 2, pp. 237-243.   DOI
9 Chang, D. Y. (1996). "Applications of the extent analysis method on fuzzy AHP." European Journal of Operation Research, Vol. 95, No. 3, pp. 649-655.   DOI
10 Cho, H. J., and Kim, K. B. (2015). "Assessment of the social vulnerability in the climate change induced - flood risk : Focused on the City of Incheon." Climate Study Konkuk University Climate Research Institute, Vol. 10, No. 4, pp. 341-354.
11 Kim, Y. K., Chung, E. S., and Lee, K. S. (2012). "Fuzzy TOPSIS approach to flood vulnerability assessment in Korea." Journal of the Korea Water Resources Association, Vol. 45, No. 9, pp. 901-913.   DOI
12 Chung, G. H. (2015). "Comparison of selection methods for proxy variables on flood vulnerability analysis in South Korea and thailand." Journal of the Korean Society of Hazard Mitigation, Vol. 15, No. 1, pp. 297-304.   DOI
13 Kim, H. S., Park, G. J., Kim, S. D., Choi, M. H., Park, M. J., and Yoon, J. Y. (2012). "Assessment of flood vulnerability considering climate change and large-scale river restoration project." Journal of the Korean Society of Hazard Mitigation, Vol. 12, No.2, pp. 107-113.   DOI
14 Kim, I. D., Lee, C. Y., Ahn, J. H., and Ahn, W. S. (2015). "Assessment of flood flow conveyance for the anyang-chon basin using modified potential flood damage estimation (AHP)" Journal of the Korean Society of Civil Engineers Conference, pp. 211-212.
15 Kim, J. S., Chol, C. H., Lee, J. S., and Kim, H. S. (2017). "Damage prediction using heavy rain risk assessment: (1) Estimation of heavy rain damage risk index." Journal of the Korean Society of Hazard Mitigation, Vol. 17, No. 2, pp. 361-370.   DOI
16 Kim, S. H. (2005). "The morphological changes of deltaic barrier islands in the nakdong river estuary after the construction of river barrage." Journal of the Korean Geographical Society, Vol. 40, No. 4, pp. 461-427.
17 Korea Fire Protection Agency (2016). Annual disaster report. Ministry of the Interior and Safety.
18 Kron, W. (2002). Keynote lecture: flood risk = hazard ${\times}$ exposure ${\times}$ vulnerability. In: Wu, B., Wang, Z., Wang, G., Huang, G., Fang, H., Huang, J. (eds,) Flood defence 2002. Science Press, New York, pp. 82-97, Ltd. http://www.cws.net.cn/cwsnet/meeting-fanghong/v10108.pdf.
19 Lee, G. M. (2013). Multiple-criteria decision-making approach for flood vulnerability assessment considering the uncertainties. Doctoral degree Thesis, Sungkyunkwan University Graduate school Department of Civil, Architectural and Environmental System Engineering (April).
20 Kwon, Y. H. (2002). Environmental impact and evaluation scheme in the development of a golf course. Korea Environmental Policy Evaluation Institute Occasional Research Report, Vol. 2002, No. 8.
21 Lee, G. M., Chung, E. S., and Jun, K. S. (2013). "MCDM approach for flood vulnerability assessment using TOPSIS method with ${\alpha}$ cut level sets." Journal of the Korean Society of Hazard Mitigation, Vol. 46, No. 10, pp. 977-987.