Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling
Abstract Non‐tidal ocean loading (NTOL) signals are known to be a significant source of geophysically induced noise in gravimetric and geodetic observations also far‐away from the coast and especially during extreme events such as storm surges. Operationally available corrections suffer from a low t...
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| Format: | Article |
| Language: | English |
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Wiley
2024-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL109262 |
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| author | C. Voigt R. Sulzbach H. Dobslaw A. Weise L. Timmen Z. Deng M. Reich N. Stolarczuk H. Peters M. Fietz M. Thomas F. Flechtner |
| author_facet | C. Voigt R. Sulzbach H. Dobslaw A. Weise L. Timmen Z. Deng M. Reich N. Stolarczuk H. Peters M. Fietz M. Thomas F. Flechtner |
| author_sort | C. Voigt |
| collection | DOAJ |
| description | Abstract Non‐tidal ocean loading (NTOL) signals are known to be a significant source of geophysically induced noise in gravimetric and geodetic observations also far‐away from the coast and especially during extreme events such as storm surges. Operationally available corrections suffer from a low temporal and spatial resolution and reveal too small amplitudes on continental stations. Dedicated high‐resolution sea‐level modeling of the North and Baltic Sea provides an improved prediction of NTOL signals. Superconducting gravimeter and Global Navigation Satellite Systems observations on the small offshore island of Heligoland in the North Sea are used for an evaluation of the model values revealing largely increased correlations of up to 0.9 and signal reductions of up to 50% during a storm surge period of one month in January and February 2022. Evaluations on additional continental superconducting gravimeter stations also show significant improvements through the recommended high‐resolution modeling for improved signal separation further away from the coast. |
| format | Article |
| id | doaj-art-773601a9092f4c1a8121dff625cbbd6e |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-773601a9092f4c1a8121dff625cbbd6e2025-08-20T02:04:21ZengWileyGeophysical Research Letters0094-82761944-80072024-07-015113n/an/a10.1029/2024GL109262Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution ModelingC. Voigt0R. Sulzbach1H. Dobslaw2A. Weise3L. Timmen4Z. Deng5M. Reich6N. Stolarczuk7H. Peters8M. Fietz9M. Thomas10F. Flechtner11Helmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyInstitute of Geodesy Leibniz Universität Hannover (LUH) Hannover GermanyInstitute of Geodesy Leibniz Universität Hannover (LUH) Hannover GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyBiologische Anstalt Helgoland Alfred‐Wegener‐Institute (AWI) Helmholtz Centre for Polar and Marine Research Helgoland GermanyBiologische Anstalt Helgoland Alfred‐Wegener‐Institute (AWI) Helmholtz Centre for Polar and Marine Research Helgoland GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyHelmholtz Centre Potsdam—GFZ German Research Centre for Geosciences Potsdam GermanyAbstract Non‐tidal ocean loading (NTOL) signals are known to be a significant source of geophysically induced noise in gravimetric and geodetic observations also far‐away from the coast and especially during extreme events such as storm surges. Operationally available corrections suffer from a low temporal and spatial resolution and reveal too small amplitudes on continental stations. Dedicated high‐resolution sea‐level modeling of the North and Baltic Sea provides an improved prediction of NTOL signals. Superconducting gravimeter and Global Navigation Satellite Systems observations on the small offshore island of Heligoland in the North Sea are used for an evaluation of the model values revealing largely increased correlations of up to 0.9 and signal reductions of up to 50% during a storm surge period of one month in January and February 2022. Evaluations on additional continental superconducting gravimeter stations also show significant improvements through the recommended high‐resolution modeling for improved signal separation further away from the coast.https://doi.org/10.1029/2024GL109262loading of the Earthtime variable gravitysuperconducting gravimeter |
| spellingShingle | C. Voigt R. Sulzbach H. Dobslaw A. Weise L. Timmen Z. Deng M. Reich N. Stolarczuk H. Peters M. Fietz M. Thomas F. Flechtner Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling Geophysical Research Letters loading of the Earth time variable gravity superconducting gravimeter |
| title | Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling |
| title_full | Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling |
| title_fullStr | Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling |
| title_full_unstemmed | Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling |
| title_short | Non‐Tidal Ocean Loading Signals of the North and Baltic Sea From Terrestrial Gravimetry, GNSS, and High‐Resolution Modeling |
| title_sort | non tidal ocean loading signals of the north and baltic sea from terrestrial gravimetry gnss and high resolution modeling |
| topic | loading of the Earth time variable gravity superconducting gravimeter |
| url | https://doi.org/10.1029/2024GL109262 |
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