Title :
Distributed Watershed Concentration Flow Model Based on DEM
Author :
Liu Fang-gui ; Zhang Jin-cun ; Rui Xiao-fang ; Feng Jie ; Chen Li-xia
Author_Institution :
Coll. of Civil & Archit. Eng., Guangxi Univ., Nanning, China
Abstract :
Allowing for catchment hydrological effect due to spatial variability of precipitation and underlying topography, the catchment is divided into a number of basic units of concentration flow within only one channel link by the method of natural divide. The basic unit of concentration flow is regarded as a V-shaped structure, and a distributed watershed concentration flow model is built on a series of V-shaped units of catchment. In the model, geomophologic instantaneous nit hydrograph based on area-time curve methodology is used to simulate overlanflow concentration, and Musking mothodology is used to simulate river flood routing. The model is applied in Xingfeng river basin and the result is reasonable.
Keywords :
atmospheric precipitation; digital elevation models; geomorphology; geophysical fluid dynamics; hydrological techniques; hydrology; rivers; topography (Earth); China; DEM; Musking mothodology; Muskingum method; V-shaped stucture; Xingfeng river basin; area-time curve methodology; catchment hydrological effect; concentration flow; distributed watershed concentration flow model; geomophologic instantaneous nit hydrograph; overlanftow concentration; precipitation; river flood routing; spatial variability; topography; watershed basic unit; Civil engineering; Educational institutions; Floods; Hydroelectric power generation; Hydrology; Information science; Land surface; Predictive models; Rivers; Water resources;
Conference_Titel :
Information Science and Engineering (ICISE), 2009 1st International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4909-5
DOI :
10.1109/ICISE.2009.515
