New Tidal Analysis of Superconducting Gravimeter Records at Metsähovi, Finland
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A4 Artikkeli konferenssijulkaisussa
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en
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9
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Gravity, Positioning and Reference Frames - Proceedings of the IAG Symposia - GGHS2022: Gravity, Geoid, and Height Systems 2022; IAG Commission 4: Positioning and Applications, 2022; REFAG2022: Reference Frames for Applications in Geosciences, 2022, pp. 11-19, International Association of Geodesy Symposia ; Volume 156
Abstract
Superconducting gravimeters are the most sensitive instruments for monitoring gravitational changes. At the Metsähovi Geodetic Research Station in southern Finland, a superconducting gravimeter has been operating since 1994. It can be used to monitor crustal loading effects affecting the other geodetic measurements made at the station. Gravimeters iGrav-013 and iOSG-022 replaced the old gravimeter SG-T020 at Metsähovi in 2016. The first step was to do a new local tidal gravity modelling for Metsähovi Geodetic Research Station based on the first 5.5 years of iGrav-013 and iOSG-022 superconducting gravimeter data. Here we present the first analysis of the gravity data and the results of tidal analysis of Earth body tides and ocean tidal loading.Description
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Raja-Halli, A, Nordman, M, Ruotsalainen, H & Virtanen, H 2024, New Tidal Analysis of Superconducting Gravimeter Records at Metsähovi, Finland. in J T Freymueller & L Sánchez (eds), Gravity, Positioning and Reference Frames - Proceedings of the IAG Symposia - GGHS2022 : Gravity, Geoid, and Height Systems 2022; IAG Commission 4: Positioning and Applications, 2022; REFAG2022: Reference Frames for Applications in Geosciences, 2022. International Association of Geodesy Symposia, vol. 156, Springer, pp. 11-19, IAG International Symposium on Reference Frames for Applications in Geosciences, Thessaloniki, Greece, 17/10/2022. https://doi.org/10.1007/1345_2023_231