New ultrahigh-resolution picture of Earth's gravity field
We provide an unprecedented ultrahigh resolution picture of Earth’s gravity over all continents and numerous islands within ±60° latitude. This is achieved through augmentation of new satellite and terrestrial gravity with topography data and use of massive parallel computation techniques, deliverin...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
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American Geophysical Union
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/46786 |
| _version_ | 1848757657065750528 |
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| author | Hirt, Christian Claessens, Sten Fecher, T. Kuhn, Michael Pail, R. Rexer, Moritz |
| author_facet | Hirt, Christian Claessens, Sten Fecher, T. Kuhn, Michael Pail, R. Rexer, Moritz |
| author_sort | Hirt, Christian |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | We provide an unprecedented ultrahigh resolution picture of Earth’s gravity over all continents and numerous islands within ±60° latitude. This is achieved through augmentation of new satellite and terrestrial gravity with topography data and use of massive parallel computation techniques, delivering local detail at ~200 m spatial resolution. As such, our work is the first-of-its-kind to model gravity at unprecedented fine scales yet with near-global coverage. The new picture of Earth’s gravity encompasses a suite of gridded estimates of gravity accelerations, radial and horizontal field components, and quasi-geoid heights at over 3 billion points covering 80% of Earth’s land masses. We identify new candidate locations of extreme gravity signals, suggesting that the Committee on Data for Science and Technology standard for peak-to-peak variations in free-fall gravity is too low by about 40%. The new models are beneficial for a wide range of scientific and engineering applications and freely available to the public. |
| first_indexed | 2025-11-14T09:31:34Z |
| format | Journal Article |
| id | curtin-20.500.11937-46786 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:31:34Z |
| publishDate | 2013 |
| publisher | American Geophysical Union |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-467862017-09-13T14:02:53Z New ultrahigh-resolution picture of Earth's gravity field Hirt, Christian Claessens, Sten Fecher, T. Kuhn, Michael Pail, R. Rexer, Moritz vertical deflections Earth's gravity field quasi-geoid ultrahigh resolution gravity We provide an unprecedented ultrahigh resolution picture of Earth’s gravity over all continents and numerous islands within ±60° latitude. This is achieved through augmentation of new satellite and terrestrial gravity with topography data and use of massive parallel computation techniques, delivering local detail at ~200 m spatial resolution. As such, our work is the first-of-its-kind to model gravity at unprecedented fine scales yet with near-global coverage. The new picture of Earth’s gravity encompasses a suite of gridded estimates of gravity accelerations, radial and horizontal field components, and quasi-geoid heights at over 3 billion points covering 80% of Earth’s land masses. We identify new candidate locations of extreme gravity signals, suggesting that the Committee on Data for Science and Technology standard for peak-to-peak variations in free-fall gravity is too low by about 40%. The new models are beneficial for a wide range of scientific and engineering applications and freely available to the public. 2013 Journal Article http://hdl.handle.net/20.500.11937/46786 10.1002/grl.50838 American Geophysical Union fulltext |
| spellingShingle | vertical deflections Earth's gravity field quasi-geoid ultrahigh resolution gravity Hirt, Christian Claessens, Sten Fecher, T. Kuhn, Michael Pail, R. Rexer, Moritz New ultrahigh-resolution picture of Earth's gravity field |
| title | New ultrahigh-resolution picture of Earth's gravity field |
| title_full | New ultrahigh-resolution picture of Earth's gravity field |
| title_fullStr | New ultrahigh-resolution picture of Earth's gravity field |
| title_full_unstemmed | New ultrahigh-resolution picture of Earth's gravity field |
| title_short | New ultrahigh-resolution picture of Earth's gravity field |
| title_sort | new ultrahigh-resolution picture of earth's gravity field |
| topic | vertical deflections Earth's gravity field quasi-geoid ultrahigh resolution gravity |
| url | http://hdl.handle.net/20.500.11937/46786 |