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Título de Acceso Abierto
Un nuevo índice de similitud hidrológica para la simulación precipitación-escorrentía en sistemas de llanura
Carlos César Scioli Erik Zimmermann Marcelo Varni Carlos Marcelo García Leticia Rodríguez Raúl Amancio Pedraza
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Resumen/Descripción – provisto por el repositorio digital
In this thesis, variable source areas (VSAs) processes in plain systems, are investigated. A new hydrologic similarity Index, ISH, replacing the original topographic Index (Beven and Kirby, 1979), ITop is proposed in order to adapt the model TopModel to the physical characteristics of plain systems. Top index, which is a function of both the slope and the upstream contributing area per unit width orthogonal to the flow direction, represents the probability of saturation of each point of the basin and describes appropriately drainage features in highland basins. Instead, in flatland systems, with slopes less than 2% loses its physical meaning. The very low slope values generates large index values, for any size of the drained area. The ISH includes the topography and drainage characteristics of the basin and the physical properties of soil. The new index incorporates the effects on soil produced by the high frequency and shallow water tables in the VSAs in plain systems. This particular feature of these systems is utilized in the formulation of ISH. The ISH was determined for the Santa Catalina basin (Azul, Buenos Aires) and the performance of the TopModel (Beven and Kirby, 1979) with the new index was analized. Results shown that with ISH index a better representation of the hydrological response of plain systems can be achieved. When groundwater levels are high, the dunnean mechanism predominates in the total runoff. Instead, when groundwater levels are low, only high intensity rainfall generated runoff, which in this case the "Hortonian" processes dominates the hydrograph.Palabras clave – provistas por el repositorio digital
Variable source area; Topographic indices; Plain systems; Distributed hydrological modeling; TopModel; Runoff generation processes; Áreas fuentes variable; Índices topográficos y similitud hidrológica; Sistemas de llanura; Modelación hidrológica distribuida
Disponibilidad
| Institución detectada | Año de publicación | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No requiere | 2016 | Biblioteca Virtual de la Universidad Nacional del Litoral (SNRD) |
|
Información
Tipo de recurso:
tesis
Idiomas de la publicación
- español castellano
País de edición
Argentina
Fecha de publicación
2016-10-04
