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2007•Journal of the Korean Society of Civil EngineersRequires access

Analysis of Geomorphological Characteristics of Gum River Basin using GIS

Mi-Seon Lee, Geun-Ae Park, Seong‐Joon Kim

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Abstract

This study analyzed the topographical characteristics by extracting property factors of stream (stream order, number of stream, stream length, mean stream length) and property factors of basin (basin area, basin length, total stream length, total number of stream, basin mean width, form factor, maximum stream order, drainage density, channel segment frequency, relief ratio, mean elevation, mean slope, maximum elevation) from DEM (Digital Elevation Model) and stream network generated by 1:5,000 NGIS (National Geographical Information System) data for the Gum-river basin. In addition, topographical factors for upper, mid stream and lower stream were analyzed and the mutuality of the factors by linear and nonlinear regression curve was identified.

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What this paper is about

This study analyzed the topographical characteristics by extracting property factors of stream (stream order, number of stream, stream length, mean stream length) and property factors of basin (basin area, basin length, total stream length, total number of stream, basin mean width, form factor, maximum stream order, drainage density, channel segment frequency, relief ratio, mean elevation, mean slope, maximum elevation) from DEM (Digital Elevation Model) and stream network generated by 1:5,000 NGIS (National Geographical Information System) data for the Gum-river basin. In addition, topographical factors for upper, mid stream and lower stream were analyzed and the mutuality of the factors by linear and nonlinear regression curve was identified.

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Available abstract

This study analyzed the topographical characteristics by extracting property factors of stream (stream order, number of stream, stream length, mean stream length) and property factors of basin (basin area, basin length, total stream length, total number of stream, basin mean width, form factor, maximum stream order, drainage density, channel segment frequency, relief ratio, mean elevation, mean slope, maximum elevation) from DEM (Digital Elevation Model) and stream network generated by 1:5,000 NGIS (National Geographical Information System) data for the Gum-river basin. In addition, topographical factors for upper, mid stream and lower stream were analyzed and the mutuality of the factors by linear and nonlinear regression curve was identified.

Key concepts: Digital elevation model, Drainage density, Elevation (ballistics), Hydrology (agriculture), Structural basin, Drainage basin, Geology, STREAMS

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