IGETS Gravity Station Hurbanovo: Comparison of gPhoneX Gravity Data with Other Co-located Measurements

Abstract Hurbanovo, as the only station for continuous monitoring of gravity changes in Slovakia, is equipped with a relative spring gravimeter gPhoneX#108. The gravity station was established in 2019 and has been a part of the International Geodynamics and Earth Tide Service (IGETS) since 2021. In addition to gravity measurements, several complementary measurements at this station are carried out, including Global Navigation Satellite Systems (GNSS) for geodetic positioning co-located with Interferometric Synthetic Aperture Radar (InSAR) corner reflectors, seismometer for seismic monitoring, meteorological measurements including atmospheric pressure, temperature, and precipitation, as well as hydrological measurements of soil moisture and groundwater levels. Our contribution includes a fundamental statistical and correlation analysis of the temporal data collected through these diverse techniques and sensors, highlighting foundational insights obtained from the investigation. Results demonstrate the benefit of thermal insulation of the gPhoneX instrument but also reveal the increased anthropogenic noise at the Hurbanovo site coming most likely from the nearby traffic. Despite of the noisy environment gravimeter can capture significant precipitation events and larger groundwater variations.