A three-year airborne geophysics programme
Too little is still known about the subsurface of mainland France. Improving knowledge of our country's geology is crucial for a wide range of applications, including knowledge of mineral resources, groundwater management, spatial planning and the mitigation of natural hazards.
In the Massif Central, BRGM researchers are using airborne geophysics to produce imagery of the subsurface to depths of up to one kilometre. This data acquisition campaign began in 2022 and will be completed in 2024. Watch the video to see how the surveys were carried out and the initial results.
Geological data for a wide range of applications
The campaign currently underway in the Massif Central is gathering fundamental geological data that can be used for a wide range of applications, from better characterising the mineral resource potential of the Massif Central to managing its water resources, or assisting local players, particularly local authorities, with information about the region's geothermal resources, assessing hazards (seismicity, landslides, shrinking-swelling of clay formations) or supporting construction work (tunnels, dams, geological storage, etc.).
An effective, non-invasive technique
Airborne geophysics makes it possible to cover very large areas quickly and at a low cost, including areas that are difficult to access (forests, mountains) or that have economic activity (with the exception of densely urbanised areas). It replaces long ground survey campaigns. It has no effect on the environment and no impact on health.
Surveys continue in the Vosges and Monts du Lyonnais regions
Following on from the surveys carried out in the Massif Central, two helicopter campaigns began this summer in the Vosges and the Monts du Lyonnais. The same acquisition techniques are being used.
