TAnaTo2: A Tool to Evaluate the Impact of Natural and Anthropogenic Artefacts with a TIN-Based Model

Erwan Bocher , Jean-Yves Martin (1)

1 CERMA - Centre de recherche méthodologique d'architecture

This paper presents the TAnaTo2 model. It is based on the open source GIS OrbisGIS, developed at IRSTV institute. TAnaTo2 provides new methods to evaluate the impact of natural and anthropogenic artefacts on the water runoff pathways in a peri-urban basin with a TIN-based model. It allows you to build a drainage network which represents runoff direction computed from the steepest maximum down slope. It is used to pinpoint water flow accumulation and extract watersheds. Tanato2 is applied on the Chézine basin located in north-western France, in the suburbs of Nantes. It is being used to understand the impact of urban development on the topographic course of surface waters.

Mots clés: Geographical Information; Systems/Cartography; Earth Sciences; Spatial hydrology; OrbisGIS

Domaines: Géographie

Erwan Bocher, Jean-Yves Martin. TAnaTo2: A Tool to Evaluate the Impact of Natural and Anthropogenic Artefacts with a TIN-Based Model. Geospatial Free and Open Source Software in the 21st Century, XIV, Springer Berlin Heidelberg, pp.63-85, 2011, Lecture Notes in Geoinformation and Cartography, 978-3-642-10594-4. ⟨10.1007/978-3-642-10595-1_5⟩. ⟨halshs-01092994⟩