General relativity and geodesy.
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| Title: | General relativity and geodesy. |
|---|---|
| Authors: | Hackmann, Eva1,2 (AUTHOR) eva.hackmann@zarm.uni-bremen.de, Huckfeldt, Moritz1 (AUTHOR) moritz.huckfeldt@zarm.uni-bremen.de, Lämmerzahl, Claus1,2 (AUTHOR) claus.laemmerzahl@zarm.uni-bremen.de, Philipp, Dennis1,2 (AUTHOR) dennis.philipp@zarm.uni-bremen.de, Rievers, Benny1,2 (AUTHOR) benny.rievers@zarm.uni-bremen.de |
| Source: | International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology. Apr2026, Vol. 35 Issue 6, p1-19. 19p. |
| Subjects: | General relativity (Physics), Geodesy, Geology, Time measurements, Sea level, Gravity anomalies, Gravitational fields, Melting |
| Abstract: | Mass redistribution on Earth due to dynamic processes such as ice melting and sea-level rise leads to a changing gravitational field, observable by geodetic techniques. Monitoring this change over time allows us to learn more about our planet and its dynamic evolution. In this paper, we highlight the impact of General Relativity (GR) on geodesy: it provides corrections essential for the interpretation of high-precision measurements and enables a completely novel measurement approach using chronometry, i.e. clock-based observations. Focusing on the latter, we review the construction of the relativistic gravity potential and the corresponding geoid definition as an isochronometric surface to elucidate the comparison to the conventional Newtonian geoid. Furthermore, we comment on additional potentials due to the non-Newtonian degrees of freedom of the relativistic gravitational field, and assess the feasibility of clock-based measurements for Gravity Field Recovery (GFR) from space. Although clock observations in space demonstrate technical promise for GFR, achieving the necessary precision for practical applications remains challenging. [ABSTRACT FROM AUTHOR] |
| Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 192692770 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: General relativity and geodesy. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Hackmann%2C+Eva%22">Hackmann, Eva</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> eva.hackmann@zarm.uni-bremen.de</i><br /><searchLink fieldCode="AR" term="%22Huckfeldt%2C+Moritz%22">Huckfeldt, Moritz</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> moritz.huckfeldt@zarm.uni-bremen.de</i><br /><searchLink fieldCode="AR" term="%22Lämmerzahl%2C+Claus%22">Lämmerzahl, Claus</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> claus.laemmerzahl@zarm.uni-bremen.de</i><br /><searchLink fieldCode="AR" term="%22Philipp%2C+Dennis%22">Philipp, Dennis</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> dennis.philipp@zarm.uni-bremen.de</i><br /><searchLink fieldCode="AR" term="%22Rievers%2C+Benny%22">Rievers, Benny</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> benny.rievers@zarm.uni-bremen.de</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Modern+Physics+D%3A+Gravitation%2C+Astrophysics+%26+Cosmology%22">International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology</searchLink>. Apr2026, Vol. 35 Issue 6, p1-19. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22General+relativity+%28Physics%29%22">General relativity (Physics)</searchLink><br /><searchLink fieldCode="DE" term="%22Geodesy%22">Geodesy</searchLink><br /><searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink><br /><searchLink fieldCode="DE" term="%22Time+measurements%22">Time measurements</searchLink><br /><searchLink fieldCode="DE" term="%22Sea+level%22">Sea level</searchLink><br /><searchLink fieldCode="DE" term="%22Gravity+anomalies%22">Gravity anomalies</searchLink><br /><searchLink fieldCode="DE" term="%22Gravitational+fields%22">Gravitational fields</searchLink><br /><searchLink fieldCode="DE" term="%22Melting%22">Melting</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Mass redistribution on Earth due to dynamic processes such as ice melting and sea-level rise leads to a changing gravitational field, observable by geodetic techniques. Monitoring this change over time allows us to learn more about our planet and its dynamic evolution. In this paper, we highlight the impact of General Relativity (GR) on geodesy: it provides corrections essential for the interpretation of high-precision measurements and enables a completely novel measurement approach using chronometry, i.e. clock-based observations. Focusing on the latter, we review the construction of the relativistic gravity potential and the corresponding geoid definition as an isochronometric surface to elucidate the comparison to the conventional Newtonian geoid. Furthermore, we comment on additional potentials due to the non-Newtonian degrees of freedom of the relativistic gravitational field, and assess the feasibility of clock-based measurements for Gravity Field Recovery (GFR) from space. Although clock observations in space demonstrate technical promise for GFR, achieving the necessary precision for practical applications remains challenging. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology is the property of World Scientific Publishing Company and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1142/S0218271825400115 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 1 Subjects: – SubjectFull: General relativity (Physics) Type: general – SubjectFull: Geodesy Type: general – SubjectFull: Geology Type: general – SubjectFull: Time measurements Type: general – SubjectFull: Sea level Type: general – SubjectFull: Gravity anomalies Type: general – SubjectFull: Gravitational fields Type: general – SubjectFull: Melting Type: general Titles: – TitleFull: General relativity and geodesy. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Hackmann, Eva – PersonEntity: Name: NameFull: Huckfeldt, Moritz – PersonEntity: Name: NameFull: Lämmerzahl, Claus – PersonEntity: Name: NameFull: Philipp, Dennis – PersonEntity: Name: NameFull: Rievers, Benny IsPartOfRelationships: – BibEntity: Dates: – D: 30 M: 04 Text: Apr2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 02182718 Numbering: – Type: volume Value: 35 – Type: issue Value: 6 Titles: – TitleFull: International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology Type: main |
| ResultId | 1 |
