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How to combine GOCE and ground data?

Isabelle Panet(1), Michel Diament(2), Matthias Holschneider(3) and Olivier Jamet(4)

(1) IGN/IPGP, 4, Place Jussieu, 75252 Paris, France
(2) IPGP, 4, Place Jussieu, 75252 Paris, France
(3) Universität Potsdam, Postfach 60 15 53, D-14415 Potsdam, Germany
(4) IGN, 6 et 8, avenue Blaise-Pascal, Cité Descartes, F-77455 MARNE-LA-VALLÉE Cedex 2, France

Abstract

With the advent of satellite gravity, new datasets of unprecedented precision become available and require the development of efficient methods of representation and analysis in spherical geometry. Wavelets are especially interesting because they allow to merge low resolution, satellite data with local, high resolution data within combined representations, and because they offer possibilities of analysis in a wide range of spatial scales. We discuss here a new way to compute a discrete wavelet representation of the gravity field through a regularized least-squares inversion of gravity data and we apply this method to some examples.

 

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry