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  The Nordic Comparison of Absolute Gravimeters – NKG-CAG-2022

Bilker-Koivula, M., Engfeldt, A., Mouyen, M., Pálinkáš, V., Falk, R., Wziontek, H., Participants, C. (2023): The Nordic Comparison of Absolute Gravimeters – NKG-CAG-2022, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3559

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020320 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020320_1
Genre: Conference Paper

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 Creators:
Bilker-Koivula, Mirjam1, Author
Engfeldt, Andreas1, Author
Mouyen, Maxime1, Author
Pálinkáš, Vojtech1, Author
Falk, Reinhard1, Author
Wziontek, Hartmut1, Author
Participants, Comparison1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: In the year 2022, the Nordic Comparison of Absolute Gravimeters NKG-CAG-2022 took place at the Onsala Space Observatory of Chalmers University in Sweden. The comparison enabled participants, especially of the Nordic Countries, to obtain traceability to the SI units for their absolute gravimeters and compare their instruments to make sure they are compatible. This is important for the Fennoscandian post-glacial rebound studies carried out with these instruments.The comparison was arranged as an additional comparison according to the CCM-IAG Strategy for Metrology in Absolute Gravimetry. It was organized under the umbrella of the Nordic Geodetic Commission by the Chalmers University, Lantmäteriet and the Finnish Geospatial Research Institute, that acted as the pilot laboratory for metrology. 15 instruments of 12 organizations participated in the comparison between 10.5.2022 and 7.7.2022.The instruments measured at three sites and temporal changes in gravity were monitored with the SG054 superconducting gravimeter at Onsala. After the comparison results of 13 instruments and 11 organizations were received. Of the instruments, 6 were FG5X gravimeters, 4 FG5 gravimeters, 2 A10 gravimeters and 1 AQG atom gravimeter. The link to the latest international and European comparisons of absolute gravimeters (CCM.G-K2.2017 and EURAMET.M.G-K3) was provided by the FG5-215H and FG5X-221, that participated in those comparisons and are from a National Metrological Institute or Designated Institute. We will present the results of the comparison.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-3559
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -