HR: 15:25h
AN: G23A-08    [Abstracts]
TI: A New Glocal Mean Gravity Field Model From The Combination Of Satellite Mission And Altimetry/Gravimetry Surface Gravity Data
AU: * Rothacher, M
EM: rothacher@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Reigber, C
EM: reigber@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Schmidt, R
EM: rschmidt@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Foerste, C
EM: foer@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Koenig, R
EM: koenigr@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Flechtner, F
EM: flechtne@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Meyer, U
EM: meyeru@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Stubenvoll, R
EM: rst@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Barthelmes, F
EM: bar@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Neumayer, K H
EM: neumayer@gfz-potsdam.de
AF: GeoForschungsZentrum Potsdam Dept. Geodesy and Remote Sensing, Telegrafenberg, Potsdam, D-14473 Germany
AU: Biancale, R
EM: richard.biancale@cners.fr
AF: CNES/GRGS Groupe de Recherche de Geodesie Spatiale, 18, avenue Edouard Belin, Toulouse, F-31055 France
AU: Bruinsma, S
EM: sean.bruinsma@cnes.fr
AF: CNES/GRGS Groupe de Recherche de Geodesie Spatiale, 18, avenue Edouard Belin, Toulouse, F-31055 France
AU: Lemoine, J
EM: jean-michelle.lemoine@cnes.fr
AF: CNES/GRGS Groupe de Recherche de Geodesie Spatiale, 18, avenue Edouard Belin, Toulouse, F-31055 France
AB: High-resolution global mean gravity field models can be derived from the combination of satellite tracking and surface data. With the CHAMP and GRACE satellite missions, a new generation of such global gravity field models became available. Here the latest results of the processing of GRACE, CHAMP and SLR satellite tracking are presented and compared with outcomes of former analyses. The gravity field parameters obtained are the result of a substantial satellite data reprocessing, based on recently improved processing standards and models. On the other hand, surface gravity data derived from altimetry and gravimetry are globally available, providing a higher resolution than pure satellite data but lacking the high precision in the long-wavelength part. In an optimal approach the satellite-based data are combined with latest, partially newly processed surface gravity data sets to derive a global high-resolution gravity field model combining the high precision and homogeneity in the long- to medium-wavelength part from the satellite data with the short-wavelength resolution of the surface data. The obtained Earth gravity field model is an update of former EIGEN models of a resolution corresponding to a wavelength of 100 km and degree/order 360, respectively.
DE: 1200 GEODESY AND GRAVITY
DE: 1219 Gravity anomalies and Earth structure (0920, 7205, 7240)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
SC: Geodesy [G]
MN: Fall Meeting 2005