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Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/1419

Title: Hydrogeomorphic properties of simulated drainage patterns using digital elevation models: the flat area issue
Authors: Nardi, Fernando
Grimaldi, Salvatore
Santini, Monia
Petroselli, Andrea
Ubertini, Lucio
Keywords: Flow direction
Digital elevation model (DEM)
Stream network mapping
Depression
Flat area
Contributing area
Geographic information system (GIS)
Terrain analysis
Issue Date: 2008
Publisher: Taylor & Francis
Citation: Nardi et al. 2008. Hydrogeomorphic properties of simulated drainage patterns using digital elevation models: the flat area issue. "Hydrological Sciences Journal" 53 (6): 1176-1193
Abstract: Flat areas are a critical issue for the characterization of drainage patterns using digital elevation models (DEM). In this work, flat area removal and flow direction algorithms are implemented, and also a physically-based DEM correction model is introduced, for investigating their influence on the topological properties of the channel network, the Hortonian parameters and the hillslope width function. Differences of results, as compared to the standard procedures implemented in widely-used GIS
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Les zones planes sont problématiques pour l’interprétation des modèles numériques de terrain (MNT) en termes de caractérisation des réseaux de drainage. Dans cette étude, des algorithmes de suppression des zones planes et d’analyse des directions d’écoulement sont implémentés, dont un nouveau modèle à bases physiques de correction de MNT, afin d’étudier leur influence sur les propriétés topologiques du réseau hydrographique, les paramètres de Horton et la fonction largeur de versant. Les dif
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Description: L'articolo è disponibile sul sito dell'editore http://www.tandfonline.com/
DOI: 10.1623/hysj.53.6.1176
URI: http://hdl.handle.net/2067/1419
ISSN: 2150-3435
Appears in Collections:GEMINI - Archivio della produzione scientifica

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