Abstract
This GPS measurement campaign, carried out in 2016 and covering the Rif in Morocco, was set up to study current geodynamics in the western Mediterranean. The Netr9 receiver and the Trimble Geodetic Zephyr antenna are visible in the picture. They belong to the National Mobile GNSS Park (GPSMob), a specific action of Résif, a national research infrastructure dedicated to the observation and understanding of the internal Earth structure and dynamics. Résif is based on high-tech observation networks, composed of seismological, geodesic and gravimetric instruments deployed throughout France. The data collected allows the study of ground deformation, surface and deep structures, local and global seismicity and natural hazards, particularly seismic hazards, on the French territory with a high spatial and temporal resolution. Résif is part of the European (EPOS - European Plate Observing System) and global systems of instruments for imaging the Earth's interior in its entirety and for studying numerous natural phenomena.