A Compensation Strategy to Reduce Spring Gravimeter Output for the Effect of Temperature: Experimental Validation

Spring gravimeters are still the most utilized instruments for microgravity studies because of their relatively low cost and small size, which make them easy to transport and install. Several authors have demonstrated that meteoric parameters, especially atmospheric temperature, affect continuously running spring gravimeters. In this paper, a non-linear compensation paradigm is applied to the signal from a gravimeter, installed at two different sites, with the aim of removing the effect of meteorological perturbations. The adopted strategy prove to be site-independent as the signals from both installation sites is reduced effectively for the effect of ambient temperature changes. Conversely, through a second experiment, it is demonstrated that the mechanism triggering the temperature effect on the gravity signal is site dependent