Analysis and comparison of precise long-term nutation series, strictly determined with OCCAM 6.1 VLBI software
| hal.structure.identifier | Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB] | |
| hal.structure.identifier | Observatoire aquitain des sciences de l'univers [OASU] | |
| hal.structure.identifier | Institute of Geodesy and Geophysics [IGG] | |
| hal.structure.identifier | Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB] | |
| hal.structure.identifier | Université Sciences et Technologies - Bordeaux 1 [UB] | |
| dc.contributor.author | BOURDA, G. | |
| hal.structure.identifier | Institute of Geodesy and Geophysics [IGG] | |
| dc.contributor.author | BOEHM, J. | |
| hal.structure.identifier | Institute of Geodesy and Geophysics [IGG] | |
| dc.contributor.author | HEINKELMANN, R. | |
| hal.structure.identifier | Institute of Geodesy and Geophysics [IGG] | |
| dc.contributor.author | SCHUH, H. | |
| dc.contributor.editor | A. Brzezinski | |
| dc.contributor.editor | N. Capitaine and B. Kolaczek | |
| dc.contributor.editor | Paris: Observatoire de Paris | |
| dc.contributor.editor | Varsovie: Polish academy of science | |
| dc.date.issued | 2006 | |
| dc.date.conference | 2005-09 | |
| dc.description.abstractEn | The IAU/IUGG Working Group on "Nutation for a non-rigid Earth", led by Véronique Dehant, won the European Descartes Prize in 2003, for its work developing a new model for the precession and the nutations of the Earth. This model (MHB2000, Mathews et al. 2002) was adopted by the IAU (International Astronomical Union) during the General Assembly in Manchester, in 2000. It is based (i) on some improvements for the precession model (with respect to the previous one of Lieske et al. 1977) owing to the VLBI technique, and (ii) on a very accurate nutation model, close to the observations. With this prize, the Descartes nutation project could offer for international scientists some grants, to be used for further improvements of the precession-nutation Earth model. At the IGG (Institute of Geodesy and Geophysics), with the OCCAM 6.1 VLBI analysis software and the best data and models available, we re-analyzed the whole VLBI sessions available (from 1985 till 2005) solving for the Earth Orientation Parameters (EOP). In this paper we present the results obtained for the EOP and more particularly for the nutation series. We compare them with the other IVS analysis centers results, as well as with the IVS combined EOP series from the analysis coordinator. The series are in good agreement, except for the polar motion coordinates that show a shift with respect to the other ones and that we discuss here. Finally, we analyse the nutation series in the framework of the free core nutation (FCN) study and modelisation. | |
| dc.language.iso | en | |
| dc.source.title | Proceedings Journées 2005 systèmes de référence spatio-temporels - 2006jsrs.meet..189B | |
| dc.title.en | Analysis and comparison of precise long-term nutation series, strictly determined with OCCAM 6.1 VLBI software | |
| dc.type | Communication dans un congrès | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph] | |
| dc.subject.hal | Physique [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
| dc.subject.hal | Planète et Univers [physics]/Astrophysique [astro-ph]/Cosmologie et astrophysique extra-galactique [astro-ph.CO] | |
| dc.identifier.arxiv | 0803.1396 | |
| bordeaux.page | p. 189-190 | |
| bordeaux.conference.title | Earth dynamics and reference systems: five years after the adoption of the IAU 2000 resolutions | |
| bordeaux.country | PL | |
| bordeaux.title.proceeding | Proceedings Journées 2005 systèmes de référence spatio-temporels - 2006jsrs.meet..189B | |
| bordeaux.conference.city | Varsovie | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00261883 | |
| hal.version | 1 | |
| hal.invited | non | |
| hal.proceedings | oui | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00261883v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Proceedings%20Journ%C3%A9es%202005%20syst%C3%A8mes%20de%20r%C3%A9f%C3%A9rence%20spatio-temporels%20-%202006jsrs.meet..189B&rft.date=2006&rft.spage=p.%20189-190&rft.epage=p.%20189-190&rft.au=BOURDA,%20G.&BOEHM,%20J.&HEINKELMANN,%20R.&SCHUH,%20H.&rft.genre=unknown |
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