GIS-based spatially-distributed overland flow modeling

Author

Leu, Cheng-Hua ; Chen, Li-Jen

Author_Institution

Dept. of Civil Eng., Nat. Chung Hsing Univ., Taichung, Taiwan

fYear

1993

fDate

18-21 Aug 1993

Firstpage

2085

Abstract

A GIS-based spatially-distributed hydrologic overland flow model which uses DEM (digital elevation model) and TIN (triangulated irregular network) to represent watershed topographic features is presented. The tools include a hydrologically ordered cell-to-cell flop sequence which is subsequently used to dictate the order of overland flow computations. Watershed characteristics are simulated according to digitized thematic maps. Combining the digital watershed flow algorithm with the hydrologic model for a sloped-land watershed and using kinematic-wave based finite-difference method to solve the system equations, a runoff hydrograph was produced

Keywords

geographic information systems; geophysics computing; hydrology; DEM; GIS; TIN; algorithm; cell-to-cell flop sequence; digital elevation model; geographic information system; hydrologic model; hydrology; kinematic-wave based finite-difference method; land surface runoff; runoff hydrograph; sloped-land; spatially distributed overland flow model; triangulated irregular network; water flow; watershed topographic feature; Civil engineering; Computational Intelligence Society; Computational modeling; Digital elevation models; Distributed computing; Finite difference methods; Information systems; Preforms; Tin; Workstations;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1993. IGARSS '93. Better Understanding of Earth Environment., International

Conference_Location

Tokyo

Print_ISBN

0-7803-1240-6

Type

conf

DOI

10.1109/IGARSS.1993.322343

Filename

322343