We wish to thank Marianne Greff-Lefftz, Hilaire Legros, Jacques Hinderer (EOPGS, Strasbourg), Dominique Jault, Jean-Louis Le Mouïl and Gautier Hulot (IPG, Paris) for their expressed interest in this work and their help for the understanding of the geophysical aspects of this study. The help provided by Frédéric Joutel concerning some computational aspects of this work was also very appreciated. This work was supported by the CEE contract ERBCHRXCT940460, and by the PNP of CNRS. Part of the computations were made at CNUSC.
© European Southern Observatory (ESO) 1997
Online publication: July 3, 1998