AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data
The AUSGeoid98 gravimetric geoid model of Australia has been computed using data from the EGM96 global geopotential model, the 1996 release of the Australian gravity database, a nationwide digital elevation model, and satellite altimeter-derived marine gravity anomalies. The geoid heights are on a 2...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
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Springer Verlag
2001
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| Online Access: | http://hdl.handle.net/20.500.11937/41995 |
| _version_ | 1848756296635908096 |
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| author | Featherstone, Will Kirby, Jon Kearsley, A. Gilliland, J. Johnston, G. Steed, J. Forsberg, R. Sideris, M. |
| author_facet | Featherstone, Will Kirby, Jon Kearsley, A. Gilliland, J. Johnston, G. Steed, J. Forsberg, R. Sideris, M. |
| author_sort | Featherstone, Will |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The AUSGeoid98 gravimetric geoid model of Australia has been computed using data from the EGM96 global geopotential model, the 1996 release of the Australian gravity database, a nationwide digital elevation model, and satellite altimeter-derived marine gravity anomalies. The geoid heights are on a 2 by 2 arc-minute grid with respect to the GRS80 ellipsoid, and residual geoid heights were computed using the 1-D fast Fourier transform technique. This has been adapted to include a deterministically modified kernel over a spherical cap of limited spatial extent in the generalised Stokes scheme. Comparisons of AUSGeoid98 with GPS and Australian Height Datum (AHD) heights across the continent give an RMS agreement of -0.364 m, although this apparently large value is attributed partly to distortions in the AHD. |
| first_indexed | 2025-11-14T09:09:57Z |
| format | Journal Article |
| id | curtin-20.500.11937-41995 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:09:57Z |
| publishDate | 2001 |
| publisher | Springer Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-419952017-09-13T14:22:51Z AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data Featherstone, Will Kirby, Jon Kearsley, A. Gilliland, J. Johnston, G. Steed, J. Forsberg, R. Sideris, M. Practical Geoid Computation - Gravity Data Processing - Modified Kernels - Australia - The AUSGeoid98 gravimetric geoid model of Australia has been computed using data from the EGM96 global geopotential model, the 1996 release of the Australian gravity database, a nationwide digital elevation model, and satellite altimeter-derived marine gravity anomalies. The geoid heights are on a 2 by 2 arc-minute grid with respect to the GRS80 ellipsoid, and residual geoid heights were computed using the 1-D fast Fourier transform technique. This has been adapted to include a deterministically modified kernel over a spherical cap of limited spatial extent in the generalised Stokes scheme. Comparisons of AUSGeoid98 with GPS and Australian Height Datum (AHD) heights across the continent give an RMS agreement of -0.364 m, although this apparently large value is attributed partly to distortions in the AHD. 2001 Journal Article http://hdl.handle.net/20.500.11937/41995 10.1007/s001900100177 Springer Verlag restricted |
| spellingShingle | Practical Geoid Computation - Gravity Data Processing - Modified Kernels - Australia - Featherstone, Will Kirby, Jon Kearsley, A. Gilliland, J. Johnston, G. Steed, J. Forsberg, R. Sideris, M. AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title | AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title_full | AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title_fullStr | AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title_full_unstemmed | AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title_short | AUSGeoid98 geoid model of Australia: data treatment, computations and comparisons with GPS-levelling data |
| title_sort | ausgeoid98 geoid model of australia: data treatment, computations and comparisons with gps-levelling data |
| topic | Practical Geoid Computation - Gravity Data Processing - Modified Kernels - Australia - |
| url | http://hdl.handle.net/20.500.11937/41995 |