Satellite gravity gradient grids for geophysics

We compute gravity gradients in grids at 225 km and 255 km altitude above the reference ellipsoid corresponding to the GOCE nominal and lower orbit phases respectively, and find that the grids may contain additional high-frequency content compared with GOCE-based global models. We discuss the gradie...

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Bibliographic Details
Published in:Scientific Reports
Main Authors: Bouman, J., Ebbing, J., Fuchs, M., Sebera, J. (Josef), Lieb, V., Szwillus, W., Haagmans, R., Novák, P.
Format: Article in Journal/Newspaper
Language:English
Published: 2016
Subjects:
atlantic region
GOCE
model
North East Atlantic
Online Access:https://doi.org/10.1038/srep21050
http://hdl.handle.net/11104/0261249
Description
Summary:We compute gravity gradients in grids at 225 km and 255 km altitude above the reference ellipsoid corresponding to the GOCE nominal and lower orbit phases respectively, and find that the grids may contain additional high-frequency content compared with GOCE-based global models. We discuss the gradient sensitivity for crustal depth slices using a 3D lithospheric model of the North-East Atlantic region, which shows that the depth sensitivity differs from gradient to gradient. In addition, the relative signal power for the individual gradient component changes comparing the 225 km and 255 km grids, implying that using all components at different heights reduces parameter uncertainties in geophysical modelling.

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