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Geodetic station ALPE of Rénag located in the municipality of Alpe-d'Huez (Isère)


Description : This image shows the geodetic station ALPE of the Résif-Rénag network. This resort is located in the municipality and ski resort of Alpe-d'Huez (Isère). This station is part of the Résif-Rénag network, composed for the northern part of the French Alps of about twenty stations allowing the precise study (measurement of surface deformation of the order of mm) of the alpine mountains. On this picture we can distinguish the three elements constituting a geodetic station: i) the pylon, here a cylindrical pillar filled with concrete and anchored to the rock, ii) the antenna which receive the signal emitted by satellites (sheltered under a radome to limit snow cover in winter), iii) the box containing the geodetic receiver which decodes the electromagnetic signals transmitted by the satellites and received by the antenna for recording them in digital data format and transmit them to the data center via a 3G connection. These data are then archived and made available to the scientific community and also used by institutions such as the IGN or even some surveyors. The French seismological and geodetic network Résif is a national research infrastructure dedicated to the observation and understanding of the structure and dynamics of the Internal Earth. Résif is based on high-tech observation networks, composed of seismological, geodetic and gravimetric instruments deployed in a dense manner throughout France. The data collected make it possible to study with high spatial and temporal resolution the deformation of the ground, surface and deep structures, seismicity on a local and global scale and natural hazards, and more particularly seismic events, on French territory. Résif is part of the European (EPOS - European Plate Observing System) and global systems of instruments used to image the Earth's interior as a whole and to study many natural phenomena.
Contributor : Solène Malerba <>
Submitted on : Wednesday, October 28, 2020 - 10:03:09 AM
Last modification on : Wednesday, December 30, 2020 - 1:08:07 PM