An update of the main parameters of the SG064 (Yebes Station)

The superconducting gravimeter SG#064 was installed at the end of 2011 in the gravity pavilion of the ‘Centro de Desarrollos Tecnologicos de Yebes’, in the centre of the Iberian Peninsula. Since then, this gravimeter has been continuously recording, obtaining a large data series (more than 4 years) of gravity variations. In the meanwhile, several other gravimeters (absolute and relative models) have been measuring in the auxiliary pillars of the station. Furthermore, several hydrological sensors have been installed in the surroundings of the station during the last years, as water table gauge sensor, a meteorological station and an humidity sensor which is recording at five different depths.

We update the SG parameters as the instrumental drift, transfer function, calibration, noise level in various frequency bands, gravity response to atmospheric pressure changes and a tidal analysis on the total SG series.

 Residual signal is studied in terms of temporal gravity variations which we will use to discuss  the hydrological gravity effect in the signal.