Communication Dans Un Congrès Année : 2009

High frequency nutation from GRGS multitechnique combination

Résumé

The team “Groupe de Recherche en G ́eod ́esie Spatiale” (GRGS) has determined an experimental 12-hourly time series of the celestial pole offsets, based upon the simultaneous processing of VLBI and GPS observations over the year 2007 thanks to the package “GINS-DYNAMO” developed by CNES and GRGS. It allows us to obtain the high frequency part of the nutation, between 2 and 10 days, poorly determined by the routine VLBI processing. Absent in routine VLBI series, peaks of a few tens of microarcseconds appear around 7 days. This is possibly the effect of the normal mode Ψ 11 of the atmosphere (period of 1.2 day in the terrestrial frame).

Fichier non déposé

Dates et versions

hal-03734268 , version 1 (21-07-2022)

Identifiants

  • HAL Id : hal-03734268 , version 1

Citer

Christian Bizouard, Jean-Yves Richard, S. Bolotin, O. Bolotina. High frequency nutation from GRGS multitechnique combination. The 6th Orlov Conference, Jun 2009, Kiev, Ukraine. pp.128-133. ⟨hal-03734268⟩
29 Consultations
0 Téléchargements

Partager

  • More