Publisher : The Korean Society for Geospatial Information System
DOI : 10.7319/kogsis.2012.20.1.013
Title & Authors
The Effect of The Channel Networks Resolution According to Strahler`s Ordering Scheme on The Hydrological Response Function Choi, Yong-Joon; Ahn, Jung-Min; Kim, Joo-Cheol;
In this study, the change pattern of hydrological response function as development has been observed. The target watershed was selected Tanbu sub-Basin in the Bocheong Basin. The applied channel networks are composed of 10 cases that are channel networks by strahler`s ordering scheme and cases of all grids channel or the hillslope in basin. To each case of grid in basin, channel and hillslope drainage path lengths to outlet of basin are calculated, and hydrological response function was calculated by Nash Model. As results of this analysis, the peak discharge of hydrological response function is increased and peak time is shortened as development of channel networks. And based on statistical characteristics of hydrological response function, mean (lag time) and variance of travel time are reduced exponentially.
Strahler`s ordering scheme;GIUH;Channel networks;
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