Title :
The Research of TOPMODEL Based on Subbasin
Author :
Feng Jie ; Xie Hehai ; Cheng Liting
Author_Institution :
Coll. of Hydrol. & Water Resources, Hohai Univ. Nanjing, Nanjing, China
Abstract :
According to hydrologic similarity, that means the grids of the same topographic index were classified into the same runoff unit, TOPMODEL calculates runoff yield. However, spatial heterogeneity of basin terrain and geomorphology information such as rainfall and topographic index statistics distributed curve etc. is not considered. This paper, trough treating basin DEM, obtains sub-basins based on water system and establishes TOPMODEL based on sub-basins. The model has taken the spatial heterogeneity of rainfall and topographic index distributed curve etc. into account. Comparing simulation results applying TOPMODEL based on sub-basin with TOPMODEL in Jiuzhou basin, it is found that TOPMODEL based on sub-basin well reflect basin actual situation and simulation result is more suitable. Also the flow process at basin outlet under the composition of different sub-basin rainfall can be predicted.
Keywords :
environmental science computing; hydrological techniques; hydrology; TOPMODEL; basin terrain; distributed curve; geomorphology information; hydrologic similarity; rainfall; spatial heterogeneity; subbasin; topographic index; Analytical models; Data mining; Educational institutions; Electrical capacitance tomography; Hydrology; Rivers; Soil; Statistical distributions; Water conservation; Water resources; DEM; Jiuzhou basin; TOPMODEL; hydrologic similarity; sub-basin;
Conference_Titel :
Environmental Science and Information Application Technology, 2009. ESIAT 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-0-7695-3682-8
DOI :
10.1109/ESIAT.2009.55
