|نویسندگان||Saghafian, B - Van Lieshout, A.M - Rajaie, H.M|
|نشریه||International Journal of Applied Earth Observation and Geoinformation|
|ارائه به نام دانشگاه||Soil Conservation & Watershed Management Institute, Tehran, Iran|
|ضریب تاثیر (IF)||4.003|
|نوع مقاله||Full Paper|
|کشور محل چاپ||هلند|
Hydrologic simulation models can greatly benefit from geographic information system (GIS) capabilities for manipulation of input/output spatial data. This paper describes GIS-based pre-processing algorithms operating on elevation data that are applied in order to obtain flow direction and flow accumulation maps. Using the derived maps and other physical input data, kinematic travel-time maps, time-area histograms, and partial and total runoff hydrographs can be generated in a distributed modelling framework. The model was tested on a small watershed with satisfactory results. In its present state, the proposed model appears to work best for steep ungauged watersheds. Further validation for larger catchments requires more research. Some enhancements to the model are also recommended.