Use of Topography in the context of the GOCE satellite mission: some examples
The uppermost masses of the lithosphere - notably the land topography, bathymetry and ice - make a significant contribution to the gravity signal captured by ESA's GOCE gravity mission [1,2]. This circumstance is used 1) to evaluate ESA GOCE gravity field models of all generations, 2) to evalua...
| Main Authors: | , , , |
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| Format: | Conference Paper |
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European Space Agency
2015
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| Online Access: | http://ddfe.curtin.edu.au/gravitymodels/ERTM2160/pdf/Rexer2015_ESA_proceedings_av.pdf http://hdl.handle.net/20.500.11937/34104 |
| _version_ | 1848754131689275392 |
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| author | Rexer, M. Hirt, Christian Claessens, Sten Braitenberg, C. Braitenberg, C. |
| author_facet | Rexer, M. Hirt, Christian Claessens, Sten Braitenberg, C. Braitenberg, C. |
| author_sort | Rexer, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The uppermost masses of the lithosphere - notably the land topography, bathymetry and ice - make a significant contribution to the gravity signal captured by ESA's GOCE gravity mission [1,2]. This circumstance is used 1) to evaluate ESA GOCE gravity field models of all generations, 2) to evaluate various topographic data sets and 3) to compute a global Bouguer gravity anomaly map. All of the above is facilitated through forward modelling of the ellipsoidal topographic potential (ETP) applying the Harmonic Combination Method [3]. Curtin University's new rock-equivalent topography (RET) model, taken from the Earth2014 suite of topographic data [4], serves as topographic input model for the gravity forward modelling. ESA GOCE models show steady improvement over time and prove to be sensitive for topographic gravity signals at scales of ~100 km and finer. Using the release-5 GOCE models as a reference, Curtin University's RET models are found to improve over time too. Finally, we demonstrate that the spectral representation of the ETP allows straightforward computation of global Bouguer anomaly maps. |
| first_indexed | 2025-11-14T08:35:32Z |
| format | Conference Paper |
| id | curtin-20.500.11937-34104 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:35:32Z |
| publishDate | 2015 |
| publisher | European Space Agency |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-341042017-01-30T13:41:15Z Use of Topography in the context of the GOCE satellite mission: some examples Rexer, M. Hirt, Christian Claessens, Sten Braitenberg, C. Braitenberg, C. The uppermost masses of the lithosphere - notably the land topography, bathymetry and ice - make a significant contribution to the gravity signal captured by ESA's GOCE gravity mission [1,2]. This circumstance is used 1) to evaluate ESA GOCE gravity field models of all generations, 2) to evaluate various topographic data sets and 3) to compute a global Bouguer gravity anomaly map. All of the above is facilitated through forward modelling of the ellipsoidal topographic potential (ETP) applying the Harmonic Combination Method [3]. Curtin University's new rock-equivalent topography (RET) model, taken from the Earth2014 suite of topographic data [4], serves as topographic input model for the gravity forward modelling. ESA GOCE models show steady improvement over time and prove to be sensitive for topographic gravity signals at scales of ~100 km and finer. Using the release-5 GOCE models as a reference, Curtin University's RET models are found to improve over time too. Finally, we demonstrate that the spectral representation of the ETP allows straightforward computation of global Bouguer anomaly maps. 2015 Conference Paper http://hdl.handle.net/20.500.11937/34104 http://ddfe.curtin.edu.au/gravitymodels/ERTM2160/pdf/Rexer2015_ESA_proceedings_av.pdf European Space Agency restricted |
| spellingShingle | Rexer, M. Hirt, Christian Claessens, Sten Braitenberg, C. Braitenberg, C. Use of Topography in the context of the GOCE satellite mission: some examples |
| title | Use of Topography in the context of the GOCE satellite mission: some examples |
| title_full | Use of Topography in the context of the GOCE satellite mission: some examples |
| title_fullStr | Use of Topography in the context of the GOCE satellite mission: some examples |
| title_full_unstemmed | Use of Topography in the context of the GOCE satellite mission: some examples |
| title_short | Use of Topography in the context of the GOCE satellite mission: some examples |
| title_sort | use of topography in the context of the goce satellite mission: some examples |
| url | http://ddfe.curtin.edu.au/gravitymodels/ERTM2160/pdf/Rexer2015_ESA_proceedings_av.pdf http://hdl.handle.net/20.500.11937/34104 |