[IGSMAIL-5985]: AGU2009 G15 session on Terrestrial Reference Systems: Theory, Realizations and Applications

[Zuheir Altamimi <Zuheir.Altamimi @ ensg.ign.fr>]

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IGS Electronic Mail      19 Aug 01:20:12 PDT 2009      Message Number 5985
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Author: Zuheir Altamimi

Dear Colleagues,

We want to draw your attention to contribute to the G15 session
at the 2009 AGU Fall Meeting.

Best regards
Zuheir Altamimi
Claude Boucher
Richard Gross

G15: 	Terrestrial Reference Systems: Theory, Realizations and Applications

Terrestrial Reference System (TRS) issues are basic domains of geodesy 
and its links to astronomy and geodynamics. It plays a key role in the 
modeling and estimation of the motion of the Earth in space, as well as 
the inner deformations of the various components of the Earth system at 
the various spatial and temporal scales. Recent achievements in 
theoretical as well as conventional aspects need to be well explained, 
promoted but also critically investigated for possible future 
improvements. Joint work between IAU and IUGG, as well as the new 
release of IERS Conventions are good illustrations for this point. 
Numerous new research areas are offered in this domain. Some topics are 
advertised for this session, including relativistic modeling of TRS, 
which refer to the motion of a rotating, massive and deformable Earth; 
the transformation formulas between TRS and celestial systems; precise 
definition of the center of mass or spatial rotation; links with time 
scales (TCG, TT); models for the realizations of TRS, including 
hierarchical combinations of space geodetic techniques, multi-technique 
analysis or determination of global dynamical Earth models as well as 
the definition of the International Terrestrial Reference System (ITRS). 
The progress achieved in the primary realization of the ITRS, namely the 
ITRF is another aspect considered for this session. In the elaboration 
of their solutions submitted to the ITRF2008, the technique centers have 
made significant improvements and are hence encouraged to contribute to 
this session. Contributions are also solicited from groups who directly 
use the ITRF in their applications, such as Precise Orbit Determination, 
satellite altimetry, mean sea level variations and other Earth science 
activities. User views or requirements regarding TRS/TRF qualities and 
the role of TRS in GEO and GGOS are of great interest to this session.

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Zuheir Altamimi                           Email : altamimi @ ensg.ign.fr
Institut Geographique National            Phone : 33 1 64 15 32 55
ENSG/LAREG                                FAX   : 33 1 64 15 32 53
6-8 Avenue Blaise Pascal
77455 Champs-sur-Marne, FRANCE
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