Les inventaires de glaciers rocheux en France et en Argentine : enjeux, démarche, exploitation

• Main Author: Bornet, Damien
• Other Authors: Université Joseph Fourier - Grenoble 1 - Institut de géographie alpine (UJF IGA), Université Joseph Fourier - Grenoble 1 (UJF), Restauration des Terrains en Montagne (RTM) Alpes-Maritimes, 62 route de Grenoble, BP 3260, 06205 Nice, Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA), CONICET Mendoza, Av. Ruiz Leal s/n Parque General San Martín, Mendoza, Argentina, CP 5500, Philippe Schoeneich
• Format: Thesis
• Language: French
• Published: HAL CCSD 2014
• Subjects: Inventaire; Glaciers rocheux; Alpes du Sud; Andes centrales; geo; envir; Argentina; Argentine; Kosmo; permafrost
• Online Access: https://dumas.ccsd.cnrs.fr/dumas-01110525/file/BORNET_Damien_siteIGA2014.pdf; https://dumas.ccsd.cnrs.fr/dumas-01110525

The mountain permafrost is studied since few decades to understand the mechanisms of formation and evolution of the periglacial environment, in the context of climate change. The rock glaciers, located in high altitude, for instance in the Alps and the Andes, are the most visible and common forms of the permafrost, and are abundant in the Southern Alps and the Central Andes. The inventory of the Southern French Alps, gathering three departments, is realized to bring information about the distribution of the rock glaciers and also their activity, completing the Alpine-Space-Project PermaNET and the APIM (Alpine Permafrost Index Map) in all the Alps. This inventory is realized by the RTM service on a SIG, with aerial pictures and orthophotos, and aims to map the potential hazards zones in the French Alps. Otherwise, the national inventory of glaciers, realized actually in the Argentina Andes by the IANIGLA laboratory, base this study on the law 26.639 on the protection of glaciers and periglacial environment, promulgated in 2010, and have the aim to preserve this environment and estimate the water volume present in the glacial and periglacial forms, mapping their distribution and calculating their surface. For this inventory, the software Qgis, SAGA and the Kosmo program, as satellite pictures (Landsat, Aster, Alos) are used. The territory is studied and divided by catchment to inform the public on the available water resources by hydrological regions. Le permafrost de montagne fait l’objet de nombreuses études depuis plusieurs décennies, afin de comprendre les mécanismes de formation et d’évolution du milieu périglaciaire, dans un contexte de changement climatique. Les glaciers rocheux, présents à haute altitude dans les Alpes et dans les Andes par exemple, sont les formes les plus visibles et les plus communes du permafrost, et présents en grande quantité dans les Alpes du Sud et les Andes centrales. L’inventaire dans les Alpes du Sud, rassemblant trois départements, est réalisé afin d’apporter des ...