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The use of gravimetric data from GRACE mission in the understanding of polar motion variations

The use of gravimetric data from GRACE mission in the understanding of polar motion variations

Authors :
D. Gambis
Jolanta Nastula
Christian Bizouard
L. Seoane
Observatoire de Paris - Site de Paris (OP)
Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Source :
Geophysical Journal International, Geophysical Journal International, Oxford University Press (OUP), 2009, 178 (2), pp.614-622. ⟨10.1111/j.1365-246X.2009.04181.x⟩
Publication Year :
2009
Publisher :
Oxford University Press (OUP), 2009.

Abstract

SUMMARY Tesseral coefficients C21 and S21 derived from Gravity Recovery and Climate Experiment (GRACE) observations allow to compute the mass term of the polar-motion excitation function. This independent estimation can improve the geophysical models and, in addition, determine the unmodelled phenomena. In this paper, we intend to validate the polar motion excitation derived from GRACE’s last release (GRACE Release 4) computed by different institutes: GeoForschungsZentrum (GFZ), Postdam, Germany; Center for Space Research (CSR), Austin, USA; Jet Propulsion Laboratory (JPL), Pasadena, USA, and the Groupe de Recherche en G´

Details

ISSN :
1365246X and 0956540X
Volume :
178
Database :
OpenAIRE
Journal :
Geophysical Journal International
Accession number :
edsair.doi.dedup.....de1c5447fbe38b7719716f8667a94128
Full Text :
https://doi.org/10.1111/j.1365-246x.2009.04181.x