Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions
The concepts and mission parameters of the CHAMP, GRACE and GOCE dedicated satellite gravity missions are summarised, followed by the improvements that they are likely to make upon previous methods of determining the Earth's long-wavelength gravity field. An example of an error in the EGM96 glo...
| Main Author: | |
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| Format: | Journal Article |
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CSIRO Publishing
2003
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| Online Access: | http://hdl.handle.net/20.500.11937/32147 |
| _version_ | 1848753580544098304 |
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| author | Featherstone, Will |
| author_facet | Featherstone, Will |
| author_sort | Featherstone, Will |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The concepts and mission parameters of the CHAMP, GRACE and GOCE dedicated satellite gravity missions are summarised, followed by the improvements that they are likely to make upon previous methods of determining the Earth's long-wavelength gravity field. An example of an error in the EGM96 global geopotential model, caused by the use of an incorrect digital elevation model over Australia, is used to exemplify the deficiencies in current global gravity models. Summarised results of a preliminary study to quantify long-wavelength errors in Australian gravity anomalies using data from the GRACE-derived EIGEN-2 global geopotential model indicate the presence of longwavelength (>1113 km) errors of over 10 mGal in Australian terrestrial gravity anomalies. Finally, the likely prospects for improved geophysical studies are speculated upon. |
| first_indexed | 2025-11-14T08:26:47Z |
| format | Journal Article |
| id | curtin-20.500.11937-32147 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:26:47Z |
| publishDate | 2003 |
| publisher | CSIRO Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-321472017-09-13T15:55:53Z Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions Featherstone, Will GOCE Australian gravity anomaly errors CHAMP GRACE global geopotential models dedicated satellite gravimetry The concepts and mission parameters of the CHAMP, GRACE and GOCE dedicated satellite gravity missions are summarised, followed by the improvements that they are likely to make upon previous methods of determining the Earth's long-wavelength gravity field. An example of an error in the EGM96 global geopotential model, caused by the use of an incorrect digital elevation model over Australia, is used to exemplify the deficiencies in current global gravity models. Summarised results of a preliminary study to quantify long-wavelength errors in Australian gravity anomalies using data from the GRACE-derived EIGEN-2 global geopotential model indicate the presence of longwavelength (>1113 km) errors of over 10 mGal in Australian terrestrial gravity anomalies. Finally, the likely prospects for improved geophysical studies are speculated upon. 2003 Journal Article http://hdl.handle.net/20.500.11937/32147 10.1071/EG03069 CSIRO Publishing restricted |
| spellingShingle | GOCE Australian gravity anomaly errors CHAMP GRACE global geopotential models dedicated satellite gravimetry Featherstone, Will Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title | Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title_full | Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title_fullStr | Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title_full_unstemmed | Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title_short | Improvement to long-wavelength Australian gravity anomalies expected from the CHAMP, GRACE and GOCE dedicated satellite gravimetry missions |
| title_sort | improvement to long-wavelength australian gravity anomalies expected from the champ, grace and goce dedicated satellite gravimetry missions |
| topic | GOCE Australian gravity anomaly errors CHAMP GRACE global geopotential models dedicated satellite gravimetry |
| url | http://hdl.handle.net/20.500.11937/32147 |