水工学論文集
Online ISSN : 1884-9172
Print ISSN : 0916-7374
ISSN-L : 0916-7374
DEVELOPMENT OF A TRANSFERABLE HYDROLOGIC MODELING IN TOPMODEL FRAMEWORK ACROSS SCALE AND REGION
Nawa Raj PRADHANYasuto TACHIKAWAKaoru TAKARA
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2005 年 49 巻 p. 217-222

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Development of a transferable rainfall runoff model and transferable model parameter values seeks connections among physical processes at disparate scales and possible linkage of hydrological similarities between catchments, which makes scale transformation and scale invariance as the fundamental requirement. We successfully transferred 50m DEM resolution TOPMODEL parameters identified at Kamishiiba catchment (210 km2, Japan) to Kuwanouchi catchment (187 km2, Japan) and Balaphi catchment (650 km2, Nepal) by downscaling the topographic index distribution for the later catchments from coarse resolution DEM with 1 km grid size to target resolution DEM with 50m grid scale. This leads to the conclusion that the method of transferring scale independent hydrological relationships can serve as a potential tool for regionalization of parameters and for predicting ungauged basins.

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© by Japan Society of Civil Engineers
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