Comparisons of Absolute Gravimeters as a Key Component of the International Terrestrial Gravity Reference Frame (ITGRF) Shown on the Example of the WET-CAG2021 at Wettzell, Germany

authored by: Hartmut Wziontek, Reinhard Falk, Vojtech Pálinkáš, Andreas Engfeldt, Julian Glässel, Andreas Hellerschmied, Domenico Iacovone, Jakub Kostelecky, Marvin Reich, Ludger Timmen, Christian Ullrich, Alessandro Valluzzi, Barbara Zehetmaier
Abstract: Comparisons of absolute gravimeters are essential to guarantee their traceability to the International System of Units (SI) and their compatibility and will be a key component of the upcoming International Terrestrial Gravity Reference Frame (ITGRF) of IAG. The results of the regional comparison of absolute gravimeters WET-CAG2021 hosted at the Geodetic Observatory Wettzell, Germany, in autumn 2021 are presented. Seven FG5/X absolute gravimeters and—for the first time—two commercial AQG absolute quantum gravimeters took part. Temporal gravity variations during the comparison period of 12 weeks were monitored with the superconducting gravimeter GWR OSG-030. The equivalence of each absolute gravimeter is evaluated against a common reference level derived from the measurements during this comparison period. Although the comparison is outside the scope of CIPM MRA it is linked to the EURAMET.M.G-K3 2018 at the same site and the CM.G-K2.2017 in Beijing, China, which ensures the traceability.
Organisation(s): Institute of Geodesy
External Organisation(s): Federal Agency for Cartography and Geodesy (BKG)
Research Institute of Geodesy, Topography and Cartography, Czech Republic
Lantmäteriet - The Swedish Mapping, Cadastral, and Land Registration Authority
Federal Office of Metrology and Surveying (BEV)
Agenzia Spaziale Italiana (ASI)
Helmholtz Centre Potsdam - German Research Centre for Geosciences (GFZ)
Type: Conference contribution
Pages: 29-36
No. of pages: 8
Publication date: 2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computers in Earth Sciences, Geophysics
Electronic version(s): https://doi.org/10.1007/1345_2023_226 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{1af925410b52432d90d4c4d6de74c080,
title = "Comparisons of Absolute Gravimeters as a Key Component of the International Terrestrial Gravity Reference Frame (ITGRF) Shown on the Example of the WET-CAG2021 at Wettzell, Germany",
abstract = "Comparisons of absolute gravimeters are essential to guarantee their traceability to the International System of Units (SI) and their compatibility and will be a key component of the upcoming International Terrestrial Gravity Reference Frame (ITGRF) of IAG. The results of the regional comparison of absolute gravimeters WET-CAG2021 hosted at the Geodetic Observatory Wettzell, Germany, in autumn 2021 are presented. Seven FG5/X absolute gravimeters and—for the first time—two commercial AQG absolute quantum gravimeters took part. Temporal gravity variations during the comparison period of 12 weeks were monitored with the superconducting gravimeter GWR OSG-030. The equivalence of each absolute gravimeter is evaluated against a common reference level derived from the measurements during this comparison period. Although the comparison is outside the scope of CIPM MRA it is linked to the EURAMET.M.G-K3 2018 at the same site and the CM.G-K2.2017 in Beijing, China, which ensures the traceability.",
keywords = "Absolute gravimeter, Comparison, Gravity reference system",
author = "Hartmut Wziontek and Reinhard Falk and Vojtech P{\'a}link{\'a}{\v s} and Andreas Engfeldt and Julian Gl{\"a}ssel and Andreas Hellerschmied and Domenico Iacovone and Jakub Kostelecky and Marvin Reich and Ludger Timmen and Christian Ullrich and Alessandro Valluzzi and Barbara Zehetmaier",
note = "Publisher Copyright: {\textcopyright} The Author(s) 2023.; IAG International Symposium on Reference Frames for Applications in Geosciences, REFAG 2022 ; Conference date: 17-10-2022 Through 20-10-2022",
year = "2023",
doi = "10.1007/1345_2023_226",
language = "English",
isbn = "9783031638541",
series = "International Association of Geodesy Symposia",
publisher = "Springer Science and Business Media Deutschland GmbH",
pages = "29--36",
editor = "Freymueller, {Jeffrey T.} and Laura S{\'a}nchez",
booktitle = "Gravity, Positioning and Reference Frames - Proceedings of the IAG Symposia - GGHS2022",
address = "Germany",
}