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  An initiative for a European Height Reference Surface

Schwabe, J., Sacher, M., Liebsch, G., Lidberg, M., Denker, H., Ågren, J., Alfredsson, A., Barzaghi, R., Bilker-Koivula, M., Ellmann, A., Garayt, B., Hellerschmied, A., Kenyeres, A., Marti, U., Varbla, S. (2023): An initiative for a European Height Reference Surface, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-2451

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018301 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5018301_2
Genre: Conference Paper

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 Creators:
Schwabe, Joachim1, Author
Sacher, Martina1, Author
Liebsch, Gunter1, Author
Lidberg, Martin1, Author
Denker, Heiner1, Author
Ågren, Jonas1, Author
Alfredsson, Anders1, Author
Barzaghi, Riccardo1, Author
Bilker-Koivula, Mirjam1, Author
Ellmann, Artu1, Author
Garayt, Bruno1, Author
Hellerschmied, Andreas1, Author
Kenyeres, Ambrus1, Author
Marti, Urs1, Author
Varbla, Sander1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: ETRS89 has become the common standard for harmonized horizontal coordinates in the European countries. In contrast, the national height networks are still determined by leveling with respect to different tide gauges and standards (height types, tide systems). The differences in the definitions cause height discrepancies up to a few decimeters along the borders. National geoid models are defined accordingly. Nowadays, GNSS-based height determination is widely used, which also increases the demand for geoid models as a height reference across borders. For large parts of the continent, the United European Leveling Network provides harmonized heights based on the standards of the EVRS. However, EUREF has yet to adopt a corresponding height reference surface officially. Thus, the EUREF Working Group “Unified European Height Reference” was formed by resolution in 2021 with the objective to enhance the usability of European heights for practical applications such as civil engineering, digital elevation models, etc. The main goal is to establish a European Height Reference Surface (EHRS) which is tailored to a consistent dataset of GNSS-leveling control points (EHRS_CP) referring to the latest ETRS89 and EVRS realizations. Furthermore, comprehensive information about the national integrated spatial reference systems, including heights and geoid models, shall be made available through the Information and Service System for European Coordinate Reference Systems (CRS-EU). The paper gives an overview of the rationale and current activities of the working group. Preliminary comparisons with selected gravimetric quasigeoid models provide an outlook on the increased accuracy of the new GNSS-leveling dataset.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
 Publishing info: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-2451
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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: -