The research deals with a calibration experiment performed in Strasbourg (France) superconducting gravity station by means of two FG5 AGs (#206 and #211) and some new generation spring meters (Scintrex Ltd. Autograv-CG3M and -CG5M and Microg-LaCoste gPhone). We discuss the results in terms of precision and accuracy of the SG calibration by means of different metrological approaches. Our main results turn out that spring gravimeters are not suitable to replace AG meters for SG calibration. Owing to the time variability of their sensitivity, the spring meters cannot be used as a stable reference for the SGs. On the contrary, the spring gravimeters could take advantage from measuring in well calibrated superconducting stations. In fact a monthly record session in a superconducting gravity observatory could provide a complete definition of the sensor's transfer function in the tidal band, both in phase and amplitude.
Results from some calibration experiments conducted at Strasbourg Superconducting gravity station / Riccardi, Umberto; S., Rosat; J., Hinderer. - (2009). (Intervento presentato al convegno 95th JOURNEES LUXEMBOURGEOISES DE GEODYNAMIQUE tenutosi a Echternach (Luxembourg) nel 9-11 Novembre 2009).
Results from some calibration experiments conducted at Strasbourg Superconducting gravity station
RICCARDI, UMBERTO;
2009
Abstract
The research deals with a calibration experiment performed in Strasbourg (France) superconducting gravity station by means of two FG5 AGs (#206 and #211) and some new generation spring meters (Scintrex Ltd. Autograv-CG3M and -CG5M and Microg-LaCoste gPhone). We discuss the results in terms of precision and accuracy of the SG calibration by means of different metrological approaches. Our main results turn out that spring gravimeters are not suitable to replace AG meters for SG calibration. Owing to the time variability of their sensitivity, the spring meters cannot be used as a stable reference for the SGs. On the contrary, the spring gravimeters could take advantage from measuring in well calibrated superconducting stations. In fact a monthly record session in a superconducting gravity observatory could provide a complete definition of the sensor's transfer function in the tidal band, both in phase and amplitude.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
