Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지
DOI QR코드

DOI QR Code

Estimation of Flood Risk Index for the Nakdong River Watershed

낙동강 유역의 홍수위험지수 산정

  • Song, Jae Ha (Department of Civil Engineering, Yeungnam University) ;
  • Kim, Sangdan (Department of Environmental Engineering, Pukyong National University) ;
  • Park, Moo Jong (Department of Civil Engineering, Hanseo University) ;
  • Choi, Hyun Il (Department of Civil Engineering, Yeungnam University)
  • 송재하 (영남대학교 건설시스템공학과) ;
  • 김상단 (부경대학교 환경공학과) ;
  • 박무종 (한서대학교 토목공학과) ;
  • 최현일 (영남대학교 건설시스템공학과)
  • Received : 2012.08.08
  • Accepted : 2012.09.19
  • Published : 2013.01.31
Download PDF
⟨ Previous Next ⟩

Abstract

The aim of study is to present how to estimate and use the FRI (Flood Risk Index) for classifying area zones based on regional flooding risk in terms of the integrated flood risk management. To estimate the FRI at a spatial resolution of city/county/town units for the Nakdong River Watershed, the 17 representative flood indexing factors are carefully selected for the three flood indexes, such as PI (Pressure Index), SI (State Index), and RI (Response Index) under the P-S-R (Pressure-State-Response) classification system. Because flood indexing factors are measured at different scales and units, they are transformed into a common domain by the T-Score normalization technique. The entropy weight coefficient method is also applied to calculate the weight of flood indexing factors in order to reduce subjective judgement on the effect of weight coefficients. The three flood indexes of PI, SI, and RI are integrated for an overall value of the FRI to evaluate the flood risk of districts. To examine the practical application of the proposed FRI, the FRI results with/without the weight coefficients are compared with flooding zones of natural disaster risk areas officially announced in 2010. It is expected that the FRI ensured by full verification can make regional protection plans against flooding disasters with respect to causes and characteristics of past floods.

본 논문에서는 통합홍수위험관리 측면에서 지역의 홍수위험도에 따라 지구를 구분할 수 있는 홍수위험지수(Flood Risk Index, FRI)의 산정 및 적용방안을 제시하고자 하였다. 낙동강 유역에대하여 시 군 구 단위의 공간해상도로 홍수위험지수(FRI)를 산정하기 위해 P-S-R(Pressure-State-Response) 구조로 분류하여 3개의 홍수지수인 압력지수(PI), 현상지수(SI), 대책지수(RI)를 대표하는 총 17개 세부지표들을 엄선하였다. 세부지표들은 각기 다른 범위와 단위로 측정된 값이므로, T-Score 방법을 사용하여 동일한 범위로 변환되었다. 또한 엔트로피(Entropy) 가중치 산정방법에 의한 가중치를 사용하여 가중치 적용에 따른 주관적인 판정을 최소화하였다. 압력지수(PI), 현상지수(SI), 대책지수(RI)의 3개 지수를 통합하여 지역의 전반적인 홍수위험 상태를 파악할 수 있는 홍수위험지수(FRI)를 산정하고, 가중치 적용 유 무에 따른 홍수위험지수 산정결과와 2010년에 고시된 자연재해위험지구 중 침수위험지구와의 비교를 통해 제안된 홍수위험지수의 적용성을 검토하였다. 충분히 검증된 홍수위험지수를 활용하면 과거 홍수의 원인 및 현상별 홍수재해에 대하여 지역적 방재대책 수립이 가능할 것이라 기대된다.

Keywords

References

  1. Connor, R.F., and Hiroki, K. (2005). "Development of a method for assessing flood vulnerability." Water Service & Technology, Vol. 51, No. 5, pp. 61-67.
  2. FEMA(Federal Emergency Management Agency). (2011). National flood insurance program: Flood insurance manual. Washington, DC., USA.
  3. GTK (Geological Survey of Finland). (2006). Project 1.3.1 : The spatial effects and management of natural and technological hazard in general and in relation to climate change. Final Report, European Spatial Planning Observation Network.
  4. Jain, A., Nandakumar, K., and Ross, A. (2005). "Score normalization in multimodal biometric systems." Pattern Recognition, Vol. 38, pp. 2270-2285. https://doi.org/10.1016/j.patcog.2005.01.012
  5. Jenks, G.F., and Caspell, F.G. (1971). "Error in choroplethic maps: definitions, measurement and reduction." Annals of the Association of American Geographers, Vol. 61, No. 2, pp. 271-244.
  6. Kang, M.G., and Kim, W.G. (2006). "Use of index and indicator for assessment on water resources and environment in a watershed." Water and Future, Vol. 39, No. 3, pp. 37-48.
  7. KICT(Korea Institute of Construction Technology). (2008). Development of evaluation technique on the abnormal flood. 3rd interim report.
  8. Kim, J.H., and Kim, Y.H. (2003). "Improving potential flood damage." Proceedings 2003 Annual Conference, KSCE, pp. 2373-2378.
  9. KRIHS (Korea Research Institute for Human Settlements). (2005). Analysis of flood damage characteristics and development of flood damage index. HRIHS 2005-6.
  10. Kron, W. (2003). Flood risk=hazard${\times}$exposure${\times}$vulnerability. Flood Defence, Edited by Wu et al., Science Press, New York. N.Y., pp. 82-97.
  11. Lim, K.S., Choi, S.J., Lee, D.R., and Moon, J.W. (2010). "Development of flood risk index using casual relationships of flood indicators." Journal of Korean Society of Civil Engineers, KSCE, Vol. 30, No. 1B, pp. 61-70.
  12. McCall, W.A. (1923). "Science of Education." The Journal of Educational Research, Vol. 7, No. 5, pp. 384-396. https://doi.org/10.1080/00220671.1923.10879367
  13. Merabtene, T., Yoshitani, J., and Kuribayashi, D. (2004). Managing Flood and Water-related Risks: A challenge for the future. AOGS 2004 Joint 1st Annual Meeting & 2nd APHWConference, Singapore, pp. 1-8.
  14. MLTM(Ministry of Land, Transport and Maritime Affairs). (2001). "Water vision 2020."
  15. NEMA(National Emergency Management Agency). (2006). Construction of regional safety assesment system.
  16. OECD(Organization for Economic Cooperation and Development) (1991). Environmental indicators. Apreliminary set. Paris, France.
  17. Ologunorisa, E.T. (2004). "An assessment of flood vulnerability zones in the Niger Delta." International Journal of Environmental Studies, Vol. 61, No. 1, pp. 31-38. https://doi.org/10.1080/0020723032000130061
  18. Prakasa, B.S., Rao, K.S., Murty, R., and Amminedu, E. (2005). "Estimation of Flood Vulnerability Index for Delta Area through RS and GIS." Geoscience and Remote Sensing Symposium, IGARSS '05. Proceedings, IEEE International, pp. 3611-3614.
  19. SDI (Seoul Development Institute). (2006). Development of the regional safety assesment model in Seoul. SDI2006-R-37.
  20. UNDP(United Nations Development Programme). (2004). "Reducing disaster risk : A challenge for development." New York, NY., USA.
  21. UNDP(United Nations Development Programme). (2008). "Fighting climate change; Human solidarity in a divided world." Human Development Report 2007/2008.
  22. UNISDR (United Nations International Strategy for Disaster Reduction). (2004). Living with risk : A global review of disaster reduction initiatives. Geneva. Swiss.

Cited by

  1. Snow Disaster Risk Index in the Ulsan Metropolitan City vol.14, pp.2, 2014, https://doi.org/10.9798/KOSHAM.2014.14.2.97
  2. Flood Vulnerability Index Estimated by Comparing Analysis Methods of Flood Damage Data vol.16, pp.2, 2016, https://doi.org/10.9798/KOSHAM.2016.16.2.427
  3. Estimating Real-time Inundation Vulnerability Index at Point-unit Farmland Scale using Fuzzy set vol.20, pp.2, 2014, https://doi.org/10.7851/ksrp.2014.20.2.001
  4. Assessment of Potential Flood Damage Considering Regional Flood Damage Cycle vol.57, pp.4, 2015, https://doi.org/10.5389/KSAE.2015.57.4.143
  5. Lake Environmental Risk Index using PSR Framework vol.14, pp.2, 2014, https://doi.org/10.9798/KOSHAM.2014.14.2.317
  6. Evaluation of Inland Inundation Risk in Urban Area using Fuzzy AHP vol.47, pp.9, 2014, https://doi.org/10.3741/JKWRA.2014.47.9.789
  7. Flood Vulnerability Analysis in Seoul considering Gender Factors vol.18, pp.6, 2018, https://doi.org/10.9798/KOSHAM.2018.18.6.301
  8. Evaluation of Urban Small Watershed Relative Flood Risk using Multi Criteria Decision Making Method vol.18, pp.2, 2018, https://doi.org/10.9798/KOSHAM.2018.18.2.431
  9. Development of the Water Disaster Vulnerability Index and Evaluation of Water Disaster Vulnerability in the Asian Monsoon Region vol.18, pp.7, 2018, https://doi.org/10.9798/KOSHAM.2018.18.7.457