Network XP_2023 Scientific goal : imaging of the crust and upper mantle (to a depth of 600-700 km) beneath the Massif Central, with deca-km resolution. 35 broadband stations (blue stars on the map) covering the whole of the Massif Central, to fill in the areas not (or poorly) covered by the permanent FR, G & RD networks (green circles on the map). Homogeneous coverage of the entire Massif, with a distance between stations of around 35 km. Instruments : T120QA and STS-2 broadband (…)

Read more

Network XF_2024 Scientific goal : supplement the broadband network for imaging the crust (to 30-35 km depth) at km to deca-km resolution, along profiles crossing volcanic zones and the main faults (e.g. Sillon Houiller, Limagne faults) of the Massif Central. Recent experiments designed to image the lithosphere have shown that it is essential to supplement broadband sensor arrays with medium-band sensor profiles to image crustal structures at a resolution approaching that of geological maps (…)

Read more

Main goal : in combination with profiles, detailed imaging of the upper crust and volcanic systems of the Chaîne des Puys, Monts-Dore and Sancy volcanic regions (down to 15-20 km depth). 625 nodes in 3 dense networks (grey and black dots on the map) a medium-density network (inter-station distance 7 km, and 3.5 km along the southern, eastern and western borders) covering the entire study region, Chaîne des Puys, Cézallier-Monts Dore and Limagne fault (black dots). two denser networks (…)

Read more