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AGU: Journal of Geophysical Research, Solid Earth

 

Index Terms

  • Geodesy and Gravity: Geopotential theory and determination
  • Geodesy and Gravity: Satellite orbits
  • Geodesy and Gravity: Standards and absolute measurements
  • Geodesy and Gravity: Terrestrial reference systems
  • Global Change: Water cycles
Abstract
Cited By (22)
 

Abstract

Seasonal and interannual geocenter motion from SLR and DORIS measurements: Comparison with surface loading data

Jean-François Crétaux

LEGOS-GRGS/CNES, Toulouse, France

Laurent Soudarin

CLS, Ramonville-Saint-Agne, France

Fraser J. M. Davidson

LEGOS-GRGS/CNES, Toulouse, France

Marie-Claude Gennero

LEGOS-GRGS/CNES, Toulouse, France

Muriel Bergé-Nguyen

LEGOS-GRGS/CNES, Toulouse, France

Anny Cazenave

LEGOS-GRGS/CNES, Toulouse, France

We present observed seasonal and interannual geocenter motion over 1993–1999 based on laser data on the LAGEOS-1, LAGEOS-2, and Topex/Poseidon (T/P) satellites as well as Doppler orbitography and radiopositioning integrated by satellite (DORIS) data from T/P. The amplitude and the phase of the space geodesy-derived seasonal cycles for each coordinate are further compared to the estimates based on surface mass redistribution on the Earth surface derived from various climatic data sources: surface pressure, soil moisture, snow depth, and ocean mass variations. Geodesy and climatic data present good agreement in terms of seasonal, still not for interannual, geocenter motion.

Published 27 December 2002.

Citation: Crétaux, J.-F., L. Soudarin, F. J. M. Davidson, M.-C. Gennero, M. Bergé-Nguyen, and A. Cazenave (2002), Seasonal and interannual geocenter motion from SLR and DORIS measurements: Comparison with surface loading data, J. Geophys. Res., 107(B12), 2374, doi:10.1029/2002JB001820.

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