The rigorous determination of orthometric heights
The main problem of the rigorous definition of the orthometric height is the evaluation of the mean value of the Earth’s gravity acceleration along the plumbline within the topography. To find the exact relation between rigorous orthometric and Molodensky’s normal heights, the mean gravity is decomp...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Springer - Verlag
2005
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| Online Access: | http://hdl.handle.net/20.500.11937/9386 |
| _version_ | 1848745934552301568 |
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| author | Tenzer, R. Vanicek, P. Santos, M. Featherstone, Will Kuhn, Michael |
| author_facet | Tenzer, R. Vanicek, P. Santos, M. Featherstone, Will Kuhn, Michael |
| author_sort | Tenzer, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The main problem of the rigorous definition of the orthometric height is the evaluation of the mean value of the Earth’s gravity acceleration along the plumbline within the topography. To find the exact relation between rigorous orthometric and Molodensky’s normal heights, the mean gravity is decomposed into: the mean normal gravity, the mean values of gravity generated by topographical and atmospheric masses, and the mean gravity disturbance generated by the masses contained within geoid. The mean normal gravity is evaluated according to Somigliana–Pizzetti’s theory of the normal gravity field generated by the ellipsoid of revolution. Using the Bruns formula, the mean values of gravity along the plumbline generated by topographical and atmospheric masses can be computed as the integral mean between the Earth’s surface and geoid. Since the disturbing gravity potential generated by masses inside the geoid is harmonic above the geoid, the mean value of the gravity disturbance generated by the geoid is defined by applying the Poisson integral equation to the integral mean. Numerical results for a test area in the Canadian Rocky Mountains show that the difference between the rigorously defined orthometric height and the Molodensky normal height reaches 0.5 m. |
| first_indexed | 2025-11-14T06:25:15Z |
| format | Journal Article |
| id | curtin-20.500.11937-9386 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:25:15Z |
| publishDate | 2005 |
| publisher | Springer - Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-93862019-02-19T05:35:29Z The rigorous determination of orthometric heights Tenzer, R. Vanicek, P. Santos, M. Featherstone, Will Kuhn, Michael Mean gravity Plumbline Normal height Orthometric height The main problem of the rigorous definition of the orthometric height is the evaluation of the mean value of the Earth’s gravity acceleration along the plumbline within the topography. To find the exact relation between rigorous orthometric and Molodensky’s normal heights, the mean gravity is decomposed into: the mean normal gravity, the mean values of gravity generated by topographical and atmospheric masses, and the mean gravity disturbance generated by the masses contained within geoid. The mean normal gravity is evaluated according to Somigliana–Pizzetti’s theory of the normal gravity field generated by the ellipsoid of revolution. Using the Bruns formula, the mean values of gravity along the plumbline generated by topographical and atmospheric masses can be computed as the integral mean between the Earth’s surface and geoid. Since the disturbing gravity potential generated by masses inside the geoid is harmonic above the geoid, the mean value of the gravity disturbance generated by the geoid is defined by applying the Poisson integral equation to the integral mean. Numerical results for a test area in the Canadian Rocky Mountains show that the difference between the rigorously defined orthometric height and the Molodensky normal height reaches 0.5 m. 2005 Journal Article http://hdl.handle.net/20.500.11937/9386 10.1007/s00190-005-0445-2 Springer - Verlag fulltext |
| spellingShingle | Mean gravity Plumbline Normal height Orthometric height Tenzer, R. Vanicek, P. Santos, M. Featherstone, Will Kuhn, Michael The rigorous determination of orthometric heights |
| title | The rigorous determination of orthometric heights |
| title_full | The rigorous determination of orthometric heights |
| title_fullStr | The rigorous determination of orthometric heights |
| title_full_unstemmed | The rigorous determination of orthometric heights |
| title_short | The rigorous determination of orthometric heights |
| title_sort | rigorous determination of orthometric heights |
| topic | Mean gravity Plumbline Normal height Orthometric height |
| url | http://hdl.handle.net/20.500.11937/9386 |