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http://dx.doi.org/10.3741/JKWRA.2003.36.6.949

The Analysis of Drainage Time and Resolution of the Quasi-dynamic and Dynamic Wetness Index  

Kim, Sang-Hyun (부산대학교 공과대학 환경공학과)
Han, Ji-Young (부산대학교 환경공학과)
Lee, Ga-Young (부산대학교 환경공학과)
Kim, Nam-Won (한국건설기술연구원)
Publication Information
Journal of Korea Water Resources Association / v.36, no.6, 2003 , pp. 949-960 More about this Journal
Abstract
The resolution issue of wetness index with relaxation of the steady state assumption is explored on the platform of Digital Elevation Model (DEM). The variabilities of the quasi-dynamic wetness index and the dynamic wetness index are discussed on the base of the spatial and statistical aspects depending upon resolutions of DEM and the drainage time. The organization patterns of the wetness index can be observed upon various drainage times and pixel size. The transient behaviour of wetness patterns of the Sulmachun watershed are shown in the relatively short drainage time. The statistical analysis of the quasi-dynamic and dynamic wetness analysis provide the convergence of analysis results to the steady state characteristics later than 10,000 hours drainage time. The probability density functions of the quasi-dynamic and the dynamic wetness index shows the existence of the threshold pixel size of DEM which provide stability and consistency in the computation result of these two wetness index.
Keywords
the quasi-dynamic wetness index; the dynamic wetness index; resolution issue; drainage time;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 이지영, 김상현(2000). '지형적 특성을 고려한 지형지수 산정 알고리즘에 관한 연구' 한국수자원학회논문집, 33권, 1호 pp. 279-288   과학기술학회마을
2 김상현, 김경현(1999). '공간적 포화면적의 공간적 연결을 고려한 TOPMODEL의 개선과 적용' 한국수자원학회논문집, 32권, 5호, pp. 515-524   과학기술학회마을
3 김상현, 이지영(1999). '개선된 지형지수 산정 알고리즘의 적용에 관한 연구' 한국수자원학회논문집, 32권 4호 pp. 489-499   과학기술학회마을
4 한지영, 김상현(2003a). '토양수분 예측을 위한 수치지형 인자와 격자크기에 대한 연구' 한국수자원학회논문집 36권 2호 pp. 251-261   과학기술학회마을
5 한지영, 김상현(2000b). ' 반동역학적 습윤지수와 동역학적 습윤지수의 개발과 적용' 한국수자원학회논문집 게제 확정
6 Barling, R. D., Moore, I. D., and Grayson, R. B.(1994). 'A quais-dynamic wetness index for characterizing the spatial distribution of zones of surface saturation and soil water content' Water Resources Research, Vol 30, No. 4, pp. 1029-1044   DOI   ScienceOn
7 Band, L. and Mackay(1998). 'Extraction and representation of nested catchment areas from digital elevation models in lake-dominated topography' Water Resources Research, Vol. 34, No. 4, pp. 897-901   DOI   ScienceOn
8 Beven, K. J., and Kirkby, M. J.(1979). 'A physically-based, variable contributing area model of basin hydrology' Hydrological Sciences Bulletin, Vol 24, pp. 43-69   DOI   ScienceOn
9 Beven, K. J., and Freer, J.(2001). 'A dynamic TOPMODEL' Hydrological Processes, Vol. 15, pp. 1993-2011   DOI   ScienceOn
10 O'Callaghan J. F., and Mark, D. M. (1984). 'The extraction of drainage networks from digital elevation data.' Comput. Vision Graphes Image Process., Vol. 28, pp. 323-344   DOI
11 O'Loughlin, E. M.(1986). 'Prediction of surface saturation zones in natural catchments by topographic analysis' Water Resources Research, Vol 22, No. 5. pp. 794-804   DOI
12 Watson, F., Grayson R., Vertessy R. and McMahon T. A.(1998). 'Large-scale distribution modelling and the utility of detailed ground data.' Hydrol. Process., Vol. 12. pp. 873-888   DOI   ScienceOn
13 Wigmosta, M. S., and Lettenmaier, D. R.(1999). 'A comparison of simplified methods for routing topographically driven subsurface flow' Water Resources Research, Vol 35, No. 1. pp. 255-264   DOI   ScienceOn
14 Wolock H.and Price (1994). 'Effects of digital elevation model map scale and data resolution on a topography-based watershed model.' Water Resour. Res., Vol. 30, No. 77, pp. 3041-3052   DOI   ScienceOn
15 Zhang, W. and Berndtsson(1991). 'Analysis of soil water dynamics in time and space by use of pattern recognition' Water Resources Research, Vol 27, No. 7. pp. 1623-1636   DOI
16 Grayson, R. B., Moore, I.D., and McMahon, T. A.(1992). 'Physically based hydrologic modeling. 1. A terrain-based for investigative purposes.' Water Resour. Res, Vol. 10, pp.2639-2658   DOI