A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination
Two methods are tested whereby satellite altimeter measurements of the geoid height are combined with surface measurements of the free-air gravity anomaly. The study area comprises the oceans around the Australian continent. The first method involves draping a grid of the free-air anomaly from satel...
| Main Authors: | , |
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| Format: | Conference Paper |
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Springer-Verlag
1998
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| Online Access: | http://hdl.handle.net/20.500.11937/4834 |
| _version_ | 1848744627752927232 |
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| author | Kirby, Jon Forsberg, R. |
| author_facet | Kirby, Jon Forsberg, R. |
| author_sort | Kirby, Jon |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Two methods are tested whereby satellite altimeter measurements of the geoid height are combined with surface measurements of the free-air gravity anomaly. The study area comprises the oceans around the Australian continent. The first method involves draping a grid of the free-air anomaly from satellite data onto a grid of the ship and land data. The second method utilises grids of the altimeter-derived geoid height, combining these with the surface data in an iterative superposition. Preliminary results show that the draping method yields a fit of 5.4 mGal between the satellite and marine data, while the iterative procedure returns 8.1 mGal. Further work can be done, however, to improve these results. The impact of the combined marine gravity data sets is illustrated by comparing the effects on an Australia-wide spherical-FFT geoid solution. |
| first_indexed | 2025-11-14T06:04:29Z |
| format | Conference Paper |
| id | curtin-20.500.11937-4834 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:04:29Z |
| publishDate | 1998 |
| publisher | Springer-Verlag |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-48342017-01-30T10:41:53Z A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination Kirby, Jon Forsberg, R. Two methods are tested whereby satellite altimeter measurements of the geoid height are combined with surface measurements of the free-air gravity anomaly. The study area comprises the oceans around the Australian continent. The first method involves draping a grid of the free-air anomaly from satellite data onto a grid of the ship and land data. The second method utilises grids of the altimeter-derived geoid height, combining these with the surface data in an iterative superposition. Preliminary results show that the draping method yields a fit of 5.4 mGal between the satellite and marine data, while the iterative procedure returns 8.1 mGal. Further work can be done, however, to improve these results. The impact of the combined marine gravity data sets is illustrated by comparing the effects on an Australia-wide spherical-FFT geoid solution. 1998 Conference Paper http://hdl.handle.net/20.500.11937/4834 Springer-Verlag fulltext |
| spellingShingle | Kirby, Jon Forsberg, R. A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title | A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title_full | A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title_fullStr | A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title_full_unstemmed | A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title_short | A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination |
| title_sort | comparison of techniques for the integration of satellite altimeter and surface gravity data for geoid determination |
| url | http://hdl.handle.net/20.500.11937/4834 |