Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Runoff Analysis Using Dual Polarization RADAR and Distributed Model

이중편파 레이더강우와 분포형 모형을 이용한 유출해석

  • Jeong, Jiyoung (Dept. of Civil & Transportation Engineering, Ajou Univ.) ;
  • Yu, Myungsu (Dept. of Civil & Transportation Engineering, Ajou Univ.) ;
  • Yi, Jaeeung (Div. Dept. of Civil & Transportation Engineering, Ajou Univ.)
  • 정지영 (아주대학교 건설교통공학과) ;
  • 유명수 (아주대학교 건설교통공학과) ;
  • 이재응 (아주대학교 건설시스템공학과)
  • Received : 2014.06.09
  • Accepted : 2014.08.20
  • Published : 2014.09.30
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Abstract

In this study, average rainfall of basin was estimated and compared with that obtained from Biseulsan dual polarization RADAR. And the runoffs are estimated using Vflo distribution model for Habcheon reservoir basin and Huicheon basin. In the rainfall estimation using dual polarization RADAR, the rainfall was estimated by using the specific phase difference and differential reflectivity of dual polarization RADAR variables. As a result, for all events rainfall estimation using dual polarization RADAR has the closest value to the gauge rainfall in terms of the peak rainfall and total rainfall. Also, runoff simulation results from dual polarization RADAR show the better results. It is concluded that the method using dual polarization radar can improve the accuracy more than a single polarization radar using only horizontal reflectivity.

본 연구에서는 합천댐, 회천 유역에 대하여 비슬산 이중편파 레이더를 이용하여 유역평균강우량을 각각 추정하여 지상 우량계의 강우량과 비교한 후 분포형 유출모형인 Vflo 모형을 사용하여 유출을 모의하였다. 유역평균 강우량 분석 결과 이중편파 레이더 변수를 사용한 결과 첨두우량 및 전체 강우량 값이 지상우량계 값과 근접하게 산정되었고, Vflo 분포형 모형을 사용한 유출모의 분석 결과 또한 이중편파 레이더 변수를 사용한 유출모의가 실제 유출량에 근접하였다. 이는 이중편파 레이더를 사용한 강우추정 및 유출모의가 기존의 수평반사도만을 사용한 단일편파 레이더보다 정확성을 높일 수 있는 방법이라고 판단된다.

Keywords

References

  1. Bae, D.H., Kim, J.H., and Yoon, S.S. (2005). "Hydrologic Utilization of Radar-Derived Rainfall (I) Optimal Radar Rainfall Estimation." Journal ofKorea Water Resources Association, Vol. 42, No. 12, pp. 1039-1052. https://doi.org/10.3741/JKWRA.2005.38.12.1039
  2. Choi, W.S. (2012). Assessment of Dual Polaization Radar on Hydrology Field. Master's theses, Sejong University, Seoul, Korea. pp. 27-28.
  3. Jeon, B.G., Lee, C.K., and Kim, Y.S. (2012). "Evaluation of Rainfall Measurement Capability of Dual Polarization Radar." Journal of Korea Society of Hazard Mitigation, Vol. 12, No. 2. pp. 215-224. https://doi.org/10.9798/KOSHAM.2012.12.2.215
  4. Kang, M.Y., Jang, M., Lee, D.I., Seo, K.J., Kim, K.I., Yoo, C.H., and Kim, J.H. (2005). "Quantitative Rainfall Estimation Using Dual Polarization Radar." Journal of Korea Meteorological Society, Vol. 2005, pp. 154-155.
  5. Kim, B.S., Hong, J.B., Kim, H.S., and Choi, K.H. (2007). "Combining Radar and Rain Gauge Rainfall Estimates for Flood Forecasting Using Conditional Merging Method." Jounal ofKorean Society of Civil Engineering, KSCE, Vol. 27, No. 3B, pp. 255-265.
  6. Kim, H.K., Lee, D.I., Yu, C.H., and Kwon, W.T. (2002). "Radar Rainfall Estimation Using Window Probability Matching Method." Journal of Korea Water Resources Association, Vol. 35, No. 1, pp. 211-221. https://doi.org/10.3741/JKWRA.2002.35.2.211
  7. Lee, G.T. (2011). Improving the HEC-HMS Model Parameter Estimation Method, Master's dissertation. Seoul University, Seoul, Korea. pp. 48.
  8. Lee, J.H., and Ryu, C.S. (2009). Radar Meteorology, Sigma Press, pp. 197-205.
  9. Lee, J.Y. (2013). Case Study for Rainfall Estimation Using Dual-Polarization Radar Data. Master's dissertation, Inha University, Incheon, Korea, pp. 48-50.
  10. Marshall, J.S., and Palmer, W.Mc K. (1948). "The Distribution of Raindrops with Size." Jounal of Atmospheric Science, Vol. 5, pp. 165-166.
  11. Ryzhkov, A.V., Giangrande, S.E., and Schuur, T.J. (2003). "Rainfall estimation with a polarimetric prototype of the operational WSR-88D radar." 31st Confernce on Radar Meteorology, Seattle, Washington, Vol. I, pp. 99.
  12. Sin, D.H. (2009). Runoff Analysis of Distributed Model Using Radar Rainfall Data. Master's theses, Kyunghee University, Seoul, Korea. pp. 7-9.
  13. Yoon, Y.N. (2008). Elementary Hydrology, Cheong Moon Gak, pp. 93-95.

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