HR: 08:30h
AN: G31A-03 INVITED     [Abstracts]
TI: Comments On The Ability Of Satellite-Geodetic Techniques To Measure Geocenter Motions.
AU: * Le Bail, K
EM: lebail@ensg.ign.fr
AF: Institut G‚ographique National/LAREG, 6-8 avenue Blaise Pascal, Champs sur Marne, MARNE LA VALLEE, 77455 France
AU: * Le Bail, K
EM: lebail@ensg.ign.fr
AF: Observatoire de la C“te d'Azur/GEMINI, Avenue Copernic, GRASSE, 06130 France
AU: Feissel-Vernier, M
EM: feissel@ensg.ign.fr
AF: Observatoire de Paris, 77 avenue Denfert Rochereau, PARIS, 77014 France
AU: Feissel-Vernier, M
EM: feissel@ensg.ign.fr
AF: Institut G‚ographique National/LAREG, 6-8 avenue Blaise Pascal, Champs sur Marne, MARNE LA VALLEE, 77455 France
AU: Berio, P
EM: Philippe.Berio@obs-azur.fr
AF: Observatoire de la C“te d'Azur/GEMINI, Avenue Copernic, GRASSE, 06130 France
AU: Coulot, D
EM: david.coulot@ensg.ign.fr;David.Coulot@obs-azur.fr
AF: Institut G‚ographique National/LAREG, 6-8 avenue Blaise Pascal, Champs sur Marne, MARNE LA VALLEE, 77455 France
AU: Coulot, D
EM: david.coulot@ensg.ign.fr;David.Coulot@obs-azur.fr
AF: Observatoire de la C“te d'Azur/GEMINI, Avenue Copernic, GRASSE, 06130 France
AU: Ramillien, G
EM: Guillaume.Ramillien@notos.cst.cnes.fr
AF: LEGOS/CNES, 18 avenue Edouard Belin, TOULOUSE CEDEX 9, 31401 France
AU: Valette, J
EM: Jean-Jacques.Valette@cls.fr
AF: Collecte Localisation Satellites (CLS), 8-10 rue HermŠs, Parc Technologique du Canal, RAMONVILLE, 31526 France
AB: The accuracy of the Earth's geocenter motion estimates is one of the challenges of the global analysis of geodetic satellite measurements. The geocenter motions are ascribed to time varying mass distribution in the atmosphere, the oceans and ground waters. The motion of the Earth's center of mass (geocenter) with respect to a terrestrial reference frame attached to the crust is usually described by time series of the coordinates of the origin of the individual data sets derived from SLR, DORIS or GPS. The intercomparison of space geodetic time series and their comparison with geophysical predictions at the seasonal, interannual and long term frequencies are used to evaluate the space geodetic reference frame results in terms of accuracy and stability. The ability to detect motions induced by the global geophysical fluids is evaluated.
DE: 1229 Reference systems
DE: 1709 Geodesy (1299)
SC: Geodesy [G]
MN: Fall Meeting 2005