GEO-PUMMA: représentation des paysages urbains et périurbains pour les modèles hydrologiques distribués
Résumé
Geo-PUMMA is a GIS toolbox to represent the terrain used in distributed hydrological modeling in urban and peri-urban areas, which preserves the hydrological connectivity and extracts a realistic drainage network..
Geo-PUMMA uses a vectorial approach that generates a polygonal mesh composed of physiographic units. Urban areas are represented using Urban Hydrological Elements (UHE) (Rodríguez et al., 2008). Rural and peri-urban areas are depicted using Hydrological Response Units (HRU) (Flüguel, 1995). (Figure 1). Geo-PUMMA improves the numerical stability of hydrological models as it considers several segmentation processes to address the following issues in mesh representation: thin units, elements extremely non-convex, too large elements and homogeneous properties within an HRU (slope, aspect, etc).
Domaines
Sciences de l'environnement
Origine : Fichiers produits par l'(les) auteur(s)