Zoneamento em unidades morfológicas da bacia do rio Oudon, Noroeste da França, a partir de MDT em ambiente SIG - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Geografia Année : 2016

Zoneamento em unidades morfológicas da bacia do rio Oudon, Noroeste da França, a partir de MDT em ambiente SIG

Résumé

This paper analyzes relief attributes defining units with homogeneous characteristics, for river Oudon basin, located northwest of France, in the department of Mayenne and Maine-et-Loire, delimited by the geographic coordinates 47∞33í31.54" ‡ 48∞ 4í41.51"de latitude N e 0∞41' 35.69" ‡ 1∞20' 8.54" de longitude W. How base map used a Digital Terrain Model in the northwest of France of the Institut National GÈographique, with a spatial resolution of 50m. Through spatial area the raster of the high there was obtained the characteristics elevation, maximum, minimum, average height and amplitude. By the tool of ArcGIS were certain about drainage, slope and geomorphometric units, separate down by a decision tree. The morphological classification and mapping to identify the units with similar characteristics as the features relief. This process involved the interpretation and visual analysis, using the superposition of layers in GIS. This analysis allowed us to define seven homogenous relief units in the Oudon basin: Unit of the Plane Areas of high course, Unity of the Valley of Dissection, Unit of the gently hills of the upper course, Unit hills with elevations isolated, Unit Plateaus scalloped, Unit Valleys between Plateaus, Unit flat areas along the mouth. The morphological classification and mapping has shown potential to be used in survey work and planning considering that the forms of relief exercising decisive role in the exposure time of materials, the intensity and direction of water flow.

Domaines

Géographie
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Dates et versions

halshs-01363756 , version 1 (11-09-2016)

Identifiants

  • HAL Id : halshs-01363756 , version 1

Citer

Luis Eduardo Souza Robaina, Romario Trentin,, François Laurent. Zoneamento em unidades morfológicas da bacia do rio Oudon, Noroeste da França, a partir de MDT em ambiente SIG. Geografia, 2016, 41 (2). ⟨halshs-01363756⟩
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