GOCE Gravity Gradients in Local Frames

Details GOCE Gravity Gradients in Local Frames GOCE Gravity Gradients in Local Frames

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.g31a0793f&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #G31A-0793

Other

[1240] Geodesy And Gravity / Satellite Geodesy: Results, [1243] Geodesy And Gravity / Space Geodetic Surveys

Scientific paper

The Gravity field and steady-state Ocean Circulation Explorer (GOCE) is one of the flagships in ESA's Living Planet Programme. With the help of the on-board, very precise gravitational gradiometer the Earth's gravity field is to be determined with unprecedented accuracy. The gradiometer measures gravity field differences that are contained in six gravity gradient tensor components. Because of the instrument characteristics four out of six tensor elements are very accurate, whereas the other two are less accurate. Consequently, the rotation of the gravity gradient tensor from the instrument frame to a local Earth related frame is not straightforward. A possible solution is to replace the less accurate components with model gradients. We will discuss the trade-off between measured and model gravity gradients and assess the information content of the rotated gradients in different local frames, specifically the local north-oriented frame and the local orbital frame.

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