HR: 1340h
AN: G43A-0799    [Abstracts]
TI: Martian gravity field long wavelength seasonal variations model from Mars Global Surveyor radio science measurements
AU: Duron, J
EM: j.duron@oma.be
AF: Royal Observatory of BELGIUM, 3, avenue circulaire, Brussels, 1180 Belgium
AU: * Marty, J
EM: jean-charles.marty@cnes.fr
AF: CNES/OMP, 14, avenue Edouard Belin, Toulouse, 31 France
AU: Balmino, G
EM: georges.balmino@cnes.fr
AF: CNES/OMP, 14, avenue Edouard Belin, Toulouse, 31 France
AU: Vales, N
EM: nicole.vales@cnes.fr
AF: CNES/OMP, 14, avenue Edouard Belin, Toulouse, 31 France
AB: By using one-way and two-way Doppler X-band tracking data of Mars Global Surveyor (MGS) from March 1998 to December 2003, the determination of the time-varying zonal gravity coefficients J2 and J3 and of the second degree Love number (k2) has been undertake. The amplitudes of the temporal variations of J2, J3 and the k2 value may be compared to those of modelled signals derived from Mars GCMs (global circulation models) and to previously obtained solutions.
DE: 5410 Composition
DE: 5714 Gravitational fields (1227)
DE: 6019 Gravitational fields
DE: 1227 Planetary geodesy and gravity (5420, 5714, 6019)
DE: 1241 Satellite orbits
SC: Geodesy [G]
MN: 2004 AGU Fall Meeting