000003254 001__ 3254
000003254 005__ 20180105072406.0
000003254 0247_ $$2DOI$$a10.1002/2017RG000566
000003254 037__ $$aSCART-2017-0039
000003254 100__ $$aVan Camp, Michel
000003254 245__ $$aGeophysics from terrestrial time-variable gravity measurements
000003254 260__ $$c2017
000003254 520__ $$aIn a context of global change and increasing anthropic pressure on the environment, monitoring the Earth system and its evolution has become one of the key missions of geosciences. Geodesy is the geoscience that measures the geometric shape of the Earth, its orientation in space, and gravity field. Time-variable gravity, because of its high accuracy, can be used to build an enhanced picture and understanding of the changing Earth. Ground-based gravimetry can determine the change in gravity related to the Earth rotation fluctuation, to celestial-body and Earth attractions, to the mass in the direct vicinity of the instruments, and vertical displacement of the instrument itself on the ground. In this paper, we review the geophysical questions that can be addressed by ground gravimeters used to monitor time-variable gravity. This is done in relation to the instrumental characteristics, noise sources and good practices. We also discuss the next challenges to be met by ground gravimetry, the place that terrestrial gravimetry should hold in the Earth observation system, and perspectives and recommendations about the future of ground gravity instrumentation.
000003254 594__ $$aNO
000003254 6531_ $$aTime-varying gravity
000003254 6531_ $$aTerrestrial measurements
000003254 6531_ $$aGravimeter
000003254 6531_ $$aTectonics
000003254 6531_ $$aHydrogeology
000003254 6531_ $$aVolcano 
000003254 6531_ $$aMetrology
000003254 700__ $$ade Viron, Olivier
000003254 700__ $$aWatlet, Arnaud,
000003254 700__ $$aMeurers, Bruno
000003254 700__ $$aFrancis, Olivier
000003254 700__ $$aCaudron, Corentin
000003254 773__ $$pReviews of Geophysics
000003254 8560_ $$fmichel.vancamp@observatoire.be
000003254 905__ $$apublished in
000003254 980__ $$aREFERD