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    Use of Topography in the context of the GOCE satellite mission: some examples

    Access Status
    Fulltext not available
    Authors
    Rexer, M.
    Hirt, Christian
    Claessens, Sten
    Braitenberg, C.
    Braitenberg, C.
    Date
    2015
    Type
    Conference Paper
    
    Metadata
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    Citation
    Rexer, M. and Hirt, C. and Claessens, S. and Braitenberg, C. 2015. Use of Topography in the context of the GOCE satellite mission: some examples, 5th International GOCE User Workshop, Nov 25-28 2014. Paris: European Space Agency.
    Source Title
    Proceedings of 5th International GOCE User Workshop
    Source Conference
    5th International GOCE User Workshop
    Additional URLs
    http://ddfe.curtin.edu.au/gravitymodels/ERTM2160/pdf/Rexer2015_ESA_proceedings_av.pdf
    School
    Department of Spatial Sciences
    URI
    http://hdl.handle.net/20.500.11937/34104
    Collection
    • Curtin Research Publications
    Abstract

    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.

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