Abstract
The photo shows the gravity measurements made at the Mac Murdo station in Antarctica. The visible instrument is a Scintrex CG5 which is part of the GMob (Mobile Gravity National Park of Résif) network. Data from these measurements are distributed by Résif, a national research infrastructure dedicated to the observation and understanding of the Earth's internal structure and dynamics. Résif is based on high-tech observation networks composed of seismological, geodetic and gravimetric instruments that are densely deployed throughout France and during campaigns abroad in areas of high scientific interest. The data collected enable the study of ground deformation, surface and deep structures, local and global seismicity and natural hazards, particularly seismic, on French territory with a high spatio-temporal resolution. Résif is integrated into the European (EPOS - European Plate Observing System) and worldwide systems of instruments used to image the interior of the Earth as a whole and to study numerous natural phenomena.