6533b82cfe1ef96bd1290734

RESEARCH PRODUCT

Rétro-observation des processus de décrue glaciaire à partir de peintures. Apports de la mono-photogrammétrie

subject

description

Alpine landscapes are indicators of climatic variations recognized through their geomorphological and glacial dynamics. Inthis field, the old documents (photographs, engravings, paintings…) constitute important data sources, used for the purposesof retro-observations. The classical methods consist, most often, to exploit them in descriptive works then being the subject ofnaturalistic cartographic retranscriptions. Today the contribution of innovative methods of treatment, such as mono-photogrammetry,offer new perspectives. It is thus possible to extract quantitative information from qualitative archives. This approachallows, in addition to a conventional landscape analysis, to project the information contained in the images for the spatial analysis.In the current context of climate change, a new mapping of the evolution of the ice extent is a result that completes the currentmodeling work. The Mont-Blanc massif offers a field of study adapted to several titles. Historically, the origins of mountaineeringand glaciology lie in this massif and provide a large number of archives since the early nineteenth century. Today, due to climatechange, several glaciers are regularly monitored, with high spatio-temporal precision. This context therefore favors exploratoryand comparative work to test the use of these new methods.