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KMID : 1024520050140010033
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Journal of the Environmental Sciences
2005 Volume.14 No. 1 p.33 ~ p.40
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Change characteristic of basin topographical parameters according to the threshold area of minimum order stream
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Ahn Seung-Seop
Park Ro-Sam
Kim Jong-Ho
Lim Ki-Seok
Song Si-Hoon
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Abstract
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The size of minimum order stream has a very sensitive effect on runoff analysis model using the divergence characteristic of stream. Therefore, in this study, the threshold area of minimum order stream has been examined the change characteristic of topographical parameters. The subject basin of the research was the upper basin of the Kumho water gage station which is located in the middle of the Kumho river. The 1:25,000 numerical geography which was constructed mesh was used. The range of investigation of topographical parameters are number of stream order, length, area, slope, basin relief, sinuosity ratio, drainage density and total stream length etc. It was found from the result of analysis that the threshold value of minimum order stream has a very big effect on topographical parameters of basin. It was found that the threshold area of minimum ord er stream revealed under Furthermore, the parameters showed a serious change except for over
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KEYWORD
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Minimum order stream, Threshold area, Topographical parameters
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