Theia Glaciers Scientific Expertise Centre (SEC) gathers together teams from OSUG and IGE who are developing a product measuring the altitude of the annual glacier equilibrium line, calculated at the end of the ablation period for all glaciers on a regional scale using optical spatial remote sensing.
The users are R&D (input glaciological data for the study of the climate/glacier relationship and for glacio-hydrological modelling), industry (hydropower producers) and local authorities including National Parks (monitoring glacier evolution).
The data used come from Sentinel-2, Landsat 5/8, ASTER and Spot-6/7.
The Altitude of glacier equilibrium line product proposed by the Glaciers SEC has an annual update frequency. It covers nearly 240 glaciers in the European Alps.
- 2018: finalization of the automated data processing chain and validation of the product “altitude of the annual glacier equilibrium line” for the glaciers of the French Alps for the period 2000-2016
- 2019: validation of the product on the scale of the European Alps for the period 2000-2016
- Spring – Summer 2020: Availability of the product “Altitude of the annual glacier equilibrium line for 239 glaciers in the European Alps for the period 2000-2016”.
- 2021: optimization of the processing chain, link with MAJA, integration into a CNES production system