Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Runoff Analysis using Spatially Distributed Rainfall Data

공간 분포된 강우를 이용한 유출 해석

  • 이종형 (공주대학교 건설환경공학부) ;
  • 윤석환 (충북대학교 토목공학과)
  • Published : 2005.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Accurate estimation of the spatial distribution of rainfall is critical to the successful modeling of hydrologic processes. The objective of this study is to evaluate the applicability of spatially distributed rainfall data. Spatially distributed rainfall was calculated using Kriging method and Thiessen method. The application of spatially distributed rainfall was appreciated to the runoff response from the watershed. The results showed that for each method the coefficient of determination for observed hydrograph was $0.92\~0.95$ and root mean square error was $9.78\~10.89$ CMS. Ordinary Kriging method showed more exact results than Simple Kriging, Universal Kriging and Thiessen method, based on comparison of observed and simulated hydrograph. The coefncient of determination for the observed peak flow was 0.9991 and runoff volume was 0.9982. The accuracy of rainfall-runoff prediction depends on the extent of spatial rainfall variability.

Keywords

References

  1. Bacchi, I., and N. T. Kottegoda., 1995, Identification and Calibration of Spatial Correlation Patterns of Rainfall. Journal of Hydrology, Vol. 165, pp.311-348 https://doi.org/10.1016/0022-1694(94)02590-8
  2. Cheng, K. S., W. Chiang., Y. B. Cheng., and H. C. Yeh., 2003, Effect of Spatial Variation Characteristics on Contouring of Design Storm Depth. Hydrological Processes, Vol. 17, pp.1755-1769 https://doi.org/10.1002/hyp.1209
  3. Chua, S. H., R. L. Bras., 1982, Optimal Estimators of Mean Areal Precipitation in Regions of Orographic Influence, Journal of Hydrology, Vol. 57, pp.23-48 https://doi.org/10.1016/0022-1694(82)90101-9
  4. Eulogio, P. I., 1998, Comparison of Geostatistical Methods for Estimating the Areal Average Climatological Rainfall Mean using Data on Precipitation and Topography, International Journal of Climatology, Vol. 18, pp. 1031-1047 https://doi.org/10.1002/(SICI)1097-0088(199807)18:9<1031::AID-JOC303>3.0.CO;2-U
  5. Goovaerts, P., 2000, Geostatistical Approaches for Incorporating Elevation into the Spatial Interpolation of Rainfall, Journal of Hydrology, Vol. 228, pp.113-129 https://doi.org/10.1016/S0022-1694(00)00144-X
  6. Kim, G. S., K. Y. Han, and K. H. Choi, 2004. 2-D Quantitative Rainfall Estimation by Combining Weather Radar and Rain Gauge Data. The Proceeding of 2004 Korea Water Resources Association: 4096-4099. (in Korean)
  7. Kim, K. T. and Y. S. Choi, 2003. A Study on Runoff Response according to Dividing Watershed. Journal of korea water resources association 36(6) : 911-624. (in Korean) https://doi.org/10.3741/JKWRA.2003.36.6.911
  8. Yoon, K. H., B. C. Seo, and H. S. Shin, 2004. Spatial Analysis of Flood Rainfall Based on kriging Technique in Nakdong River Basin. Journal of korea water resources association 37 (2) : 233 - 240. (in Korean) https://doi.org/10.3741/JKWRA.2004.37.3.233