Grid size effects analysis and hydrological similarity of surface runoff in flatland basins
| Autor: | Pedro A. Basile, Hernan R. Stenta, Gerardo A. Riccardi |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Grid size
0208 environmental biotechnology 02 engineering and technology Structural basin Grid Physics::Geophysics 020801 environmental engineering Transverse plane Entropy (information theory) Spatial variability Surface runoff Scaling Geomorphology Physics::Atmospheric and Oceanic Physics Geology Water Science and Technology |
| Zdroj: | Hydrological Sciences Journal. 62:1736-1754 |
| ISSN: | 2150-3435 0262-6667 |
| DOI: | 10.1080/02626667.2017.1349315 |
| Popis: | The effects of grid-size modification on the derived topographic attributes are analysed and a procedure for scaling model parameters and similarity assessment between flow variables is proposed. Hydrological simulations are performed with a physically-based and spatially-distributed quasi-2D mathematical model. The scaled model parameters are the effective roughness coefficient associated with overland flow (nov) and the transverse slope in the cell (TSC). To scale the selected parameters, the criterion of equilibrium storage conservation between the different grid sizes is applied. Three basins of the central-east region of Argentina are modelled. The spatial variability of basin geomorphology is quantified using the entropy concept. The simulation results show that when grid size is increased, to obtain similar hydrological responses it is necessary to increase the nov or to reduce the TSC. In terms of similarity, the best results are achieved when TSC is scaled, particularly when water depths ... |
| Databáze: | OpenAIRE |
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