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http://dx.doi.org/10.3741/JKWRA.2002.35.4.345

Development of Optimized Flow Apportioning Algorithm Using Natural Stream Morphology  

Kim, Sang-Hyun (Dept. of Environmental Engrg. Pusan National Univ.)
Lee, Hak-Su (IETI Pusan National Univ.)
Kang, Chang-Yong (Dept. of Environmental Engrg. Pusan National Univ.)
Kim, Nam-Won (KICT)
Publication Information
Journal of Korea Water Resources Association / v.35, no.4, 2002 , pp. 345-358 More about this Journal
Abstract
The flow apportioning algorithms with digital elevation models have been developed to reflect reasonable flow divergence properties but they showed several defects related to the connectivity of channel cells, various divergence features along to local topography and channel cells' size etc. Topographic data used by existing flow apportioning algorithms are flow accumulation area and local slope. However, the size and location of channel cells which play the dominant role in the flow pathway were not properly considered. Therefore, a new flow apportioning algorithm considering various flow divergence characteristics in the complicate terrain is proposed. The GA optimization scheme is used to represent the location and scale of the channel pixel. Improved result can be obtained by using both a new flow apportioning algorithm and optimization.
Keywords
Digital Elevation Model; Flow Apportioning Algorithm; Optimization;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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