*************************************************************************** IERS Message No. 11 June 29, 2001 *************************************************************************** Journees 2001 Systemes de Reference Spatio-Temporels "Influence of geophysics, time and space reference frames on Earth rotation studies" Brussels, Belgium, 24-26 September 2001 Invitation The Journes 2001 Systemes de Reference (JSR) with the sub-title "Influence of geophysics, time and space reference frames on Earth rotation studies" will be organised in Brussels, Belgium, 24-26 September 2001, jointly by the Royal Observatory of Belgium, the Institut d'Astronomie et de Geophysique G. Lemaitre from the Catholic University of Louvain (UCL) and the Observatoire de Paris. The problems to be discussed in 2001 are related to various geophysical effects on Earth rotation such as geophysical fluids, tides, oceanic and atmospheric perturbations, as well as to the effects of time and space reference frames, such as time transfer, realisation of time scales and terrestrial and celestial frames. This also includes the problem of sensitivity of the different techniques of observation of Earth rotation. Earth rotation studies are also extended to other planets. The programme of the Journees 2001 will include the five following sessions, half-a-day each; for each session one or two members of the LOC are in charge of the local organisation; their names are given at the end of the proposed sessions: Session I : Influence of geophysical and other effects on Earth's orientation; sensitivity of the observing systems (O. de Viron, P. Defraigne). Session II : Ephemeris and dynamical reference systems (F. Roosbeek). Session III : Time and time transfer (P. Defraigne, C. Bruyninx). Session IV : Local, regional and global terrestrial frames, station positions and their interpretation; influence of the geophysical fluids, tidal, ocean and atmospheric effects (C. Bruyninx, R. Warnant). Session V : Geodesy and rotation of the other planets (T. Van Hoolst, V. Dehant). At this occasion the G. Lemaitre Prize, of the University of Louvain la Neuve, will be awarded to a geophysicist; a special session will be organised in Louvain on September 25, around 5 p.m. (lecture by the winner and JSR evening dinner). After the end of the Journees, i.e. either Wednesday (September 26) afternoon or Thursday morning, a Directing Board Meeting of the International Earth Rotation Service (IERS) will be held. Scientific Committee Brzezinski, Aleksander, Poland alek@cbk.waw.pl Capitaine, Nicole, France capitain@danof.obspm.fr Dehant, Veronique (Chair), Belgium veronique.dehant@ksb-orb.oma.be Soffel, Michael, Germany soffel@rcs1.urz.tu-dresden.de Vondrak, Jan, Czech Rep. vondrak@ig.cas.cz Yatskiv, Yaroslav, Ukrainia yatskiv@mao.kiev.ua All correspondences should be addressed to - Fax: 32-2-374.98.22 at the attention of P. Paquet - e-mail: Paul.Paquet@oma.be - regular mail: P. Paquet, Observatoire Royal de Belgique, avenue Circulaire 3, 1180 Bruxelles, Belgium More information, including - members of the Local Organising Committee - pre-registration form - list of hotels - transport - nomination for the Georges Lemaitre International Prize is available at http://www.astro.oma.be/JSR2001/ *************************************************************************** IERS Messages are edited and ditributed by the IERS Central Bureau. To subscribe or unsubscribe, please write to <central_bureau@iers.org>. Archives: http://www.iers.org/iers/publications/messages/ ***************************************************************************