Author(s): Jin-Hyeog Park; Toshiharu Kojiri; Deuk Koo Koh
Linked Author(s):
Keywords: Comparative hydrology; AHP; Distributed runoff model; GIS; River basin characteristics
Abstract: Research in the field of river hydrology has been mainly concerned with the investigation of the rainfall-runoff phenomenon through the analysis of hydrological factors such as meteorology and geography, with the focus being on each river basin. Recently, various forms of digital information such as GIS and RS data have been made available in worldwide digital map format. Therefore, there has been a shift in focus from lumped-parameter models to distributed runoff models, as the latter can consider temporal and spatial variations in water quantity. Distributed runoff models have made possible the comparison of runoff field and rainfall-runoff characteristics considering spatial distribution. Hydrological conditions are differently distributed regionally or nationally, and each river basin has unique characteristics. In this paper, a comparative methodology using a GIS-based distributed runoff model and AHP (Analytic Hierarchy Process) for the analysis of river basins based on their regional hydrological characteristics and considering their temporally and spatially-distributed physical properties is developed. Based on the method, the comparative hydrology is proposed to make clear the characteristic and similarity for each river basin. An application of the comparative hydrology approach is presented for the comparison of three river basins located in the Asian-Pacific region.
Year: 2005