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Poster De Conférence Année : 2016

GEO-PUMMA: Urban and periurban landscape representation for distributed hydrological modelling

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).

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Dates et versions

hal-02605017 , version 1 (16-05-2020)
hal-02605017 , version 2 (20-07-2020)

Identifiants

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P. Sanzana, J. Gironas, Isabelle Braud, F. Branger, F. Rodriguez, et al.. GEO-PUMMA: Urban and periurban landscape representation for distributed hydrological modelling. EGU General Assembly 2016, Apr 2016, Vienna, Austria. pp.1, 2016. ⟨hal-02605017v1⟩
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