A TIN-BASED TOPOGRAPHIC MODELING FOR A DISTRIBUTED RAIN-FALL RUNOFF MODEL

A geographic information system in hydrologic modeling, BGIS (Basin Geomorphic Information System) is presented for topographic modeling of a river basin. BGIS is a set of computer programs which model natural landscapes using TIN-based DEMs and partition a catchment taking account of the direction...

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Veröffentlicht in:	Doboku Gakkai Ronbunshu 1997/02/21, Vol.1997(558), pp.45-60
Hauptverfasser:	Tachikawa, Yasuto, Shiiba, Michiharu, Takasao, Takuma
Format:	Artikel
Sprache:	eng
Schlagworte:	basin topography DEMs (digital elevation models) distributed rainfall-runoff model triangulated irregular network-DEMs
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Beschreibung
Zusammenfassung:	A geographic information system in hydrologic modeling, BGIS (Basin Geomorphic Information System) is presented for topographic modeling of a river basin. BGIS is a set of computer programs which model natural landscapes using TIN-based DEMs and partition a catchment taking account of the direction of water flow for dealing with water movement one-dimensionally. BGIS is applied to some watershed basins in Japan, and it is confirmed that the system is a powerful tool to examine the effect of spatial variability of topography on runoff characteristics.
ISSN:	0289-7806 1882-7187
DOI:	10.2208/jscej.1997.558_45