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SCIENTIFIC PROGRAMME

(final version: 17 September 2004)

Monday 20 September, 9h00-13h00

Opening of the Journées 2004: 9h00-9h15

Welcome from D. Egret, President of Paris Observatory

Introduction to the Journees 2004 by N. Capitaine (SOC) and J. Souchay (LOC)

Session I: Recent and future developments in the realization of the ICRS: 9h15-11h00

Chair: J. Vondrak

Ma C.: Steps towards the next radio realization of the ICRS

Petit G., McCarthy D.D.: Updating the IERS Conventions to improve reference frames

Bolotin S.: Extension of the celestial reference frame

Souchay J., Gaume R.: Activities of the ICRS Product Center of the IERS

Arias E.F., Bouquillon S.: Maintenance of the ICRS: stability of the axes by different sets of selected radio sources

Charlot P., Fey, A. L., Jacobs, C. S., Ma, C., Sovers, O. J., Baudry, A.: Densification of the International Celestial Reference Frame: Results of EVN + Observations

Yatskiv Y., Bolotin S., Kuryanova A.: "GAOUA" realizations of the Celestial reference frame

Break: 11h00-11h30

Discussion 1 on the tasks that were previously part of the ICRS Working Group of the IAU: 11h30-13h00

Chair: T. Fukushima

Monday 20 September, 14h15-18h30

Session II: Models for Earth�s rotation: from Poincar� to IAU 2000: 14h15-15h15

Chair: A. Brzezinski

Dehant V., de Viron O., Van Hoolst T.: Poincare fluid in the Earth core (invited)

Capitaine N.: Improvements in the precession/nutation models

Hilton J.: Report on the IAU WG Precession and the ecliptic (invited) + Discussion

Break: 15h15-15h45

Short oral presentations of posters: 15h45-16h45

Chair: N. Capitaine

"Kickoff" meeting for the Project "Descartes-Nutation": 16h45-17h15

Chair: V. Dehant

Poster session 1: 17h30-18h30

Welcome drink: 18h30-20h00

Tuesday 21 September, 9h00-13h00

Session II (continuation): 9h00-10h45

Chair: Ya. Yatskiv

Salstein D., Chao, B., Ponte, R., Chen, J., Zhou, Y.: Plans for high accuracy computations of earth rotation/polar motion excitations (invited)

Brzezinski A.: Non-tidal oceanic excitation of diurnal and semidiurnal polar motion estimated from a barotropic ocean model

Escapa A, Getino J, Ferrandiz J.M.: On the effect of the redistribution tidal potential on the rotation of the non-�rigid Earth: discrepancies and clarifications

Efroimsky. M.: A possible reason for the discrepancy between the Kinoshita-Souchay theory and the other theories of rigid-Earth rotation

Pashkevich V.V., Eroshkin G.I.: Spectral analysis of the numerical theory of the rigid Earth rotation

Huang C-L.: On the coupling between geomagnetic field and Earth nutation in numerical integration approach

Break: 10h45-11h15

Session II (continuation): 11h15-13h00

Chair: P. Defraigne

Chao B. F., Cox C. M.: Length-of-Day and Polar Motion Excitation "Observed" by Time-Variable Gravity

McCarthy D.D.: The Free Core Nutation

Zharov V.: Model of the Free Core Nutation for improvement of the Earth nutation theory

Ron C., Capitaine N., Vondr�k J.: A precession study based on the astrometric series and the combined astrometric catalogue EOC-2

Shuygina N.: UT1 variations obtained from the combination of LLR, SLR and VLBI data at the observation level

Varga P., Gambis D., Bizouard C., Bus Z.: What can we say on the relationship between the global sismicity and the rotation vector of the Earth

Mueller J.: Earth Rotation and Global Dynamic Processes - Joint Research Activities in Germany

Tuesday 21 September, 14h00 - 18h30

Poster session 2: 14h00-15h00

Session III: Nomenclature in fundamental astronomy: 15h15-16h30

Chair: D.D. McCarthy

Capitaine N.: Report of the NFA Working Group

de Viron O., Dehant V.: 3D representation of the Non-Rotating Origin

Hohenkerk C.: Implementation of the new nomenclature in the Astronomical Almanac

Wallace P.: Post-IAU-2000 nomenclature for the telescope pointing application

Soffel M., Klioner S.: The ICRS, BCRS and GCRS: astronomical reference-systems and frames in the framework of Relativity, problems of nomenclature

Break: 16h30-17h00

****Discussion 2on Nomenclature in Fundamental Astronomy** : 17h00-18h30

Chair: N. Capitaine

Buffet: 19h30-22h30

Wednesday 22 September, 9h00-13h00

Session IV: Astronomical reference systems: 9h00-10h45

Chair: M. Soffel

Soffel M., Klioner S.: Relativity in the problems of astronomical reference systems and Earth rotation: status and prospects (invited)

Mignard F.: Inertial frame with Gaia : selection of sources and limitations (invited)

Leponcin-Lafitte C., Teyssandier P.: Influence of the multipole moments of a giant planet on the propagation of light: application to Gaia

Vondr�k J., Ron C.: Combined astrometric catalogue EOC-2 - an improved reference frame for long-term Earth rotation studies

Chapront J., Francou G.: The lunar libration, Comparison between various models

Fukushima T.: Efficient Orbit Integration by Integrating Orbital Longitude

Break: 10h45-11h15

Session V: Future of UTC: Consequences in astronomy: 11h15-12h45

Chair: T. Fukushima

McCarthy D.D.: Future of UTC: Consequences in astronomy: Report on the UTC Working Group and the latest developments (invited)

Arias E.F., Guinot, B.: UTC: Historical background and perspectives

Gambis D., Bizouard, C., Francou, G., Carlucci T., Sa�l M.: Prediction of UT1 and length of day variations

Wooden W.H., Johnson, T. J., Kammeyer, P. C., Carter, M. S., Myers, A. E.: Determination and Prediction of UT1 at the IERS rapid service/prediction center

Discussion

Chair: D.D. McCarthy

Closing of the Journées 2004 and Announcement of the Journées 2005: 12h45-13h00

N. Capitaine, A. Brzezinski

List of Posters

Poster session 1

Barkin Y.: Poincare�s theory of periodic solutions and resonant rotation of the Moon, Mercury and Venus

Barkin Y., Ferrandiz J.M.: Some dynamical effects in unperturbed and perturbed Earth rotation caused by elastic properties of the mantle.

Bourda G.: Earth Rotation and Variations of the Gravity Field, in the framework of the "Descartes-Nutations" Project.

Dasaev R.: Dynamical analysis of rotational orbital motion of model of the viscous elastic Earth

Folgueira M., Capitaine, N., Souchay, J.: The equations of the Earth's rotation in the framework of the IAU 2000 Resolutions

Kiryan D.: Translational movement of the axis of rotation of the Earth

Koot L., de Viron O., Dehant V.: Atmospheric Angular Momentum Time Series: Characterization of Their Internal Noise and Construction of a Combined Series.

Korsun A.: The verification of the Poincare's theory by Fedorov's works on the Earth rotation(connected with 150 anniversary of Poincare's birth and 95 anniversary of Fedorov's birth)

Kudlay O.: . Nonlinear effects in excitation of polar motion and validity of perturbation theory approach

Kudryavtsev S.: KSM03 Harmonic Development of the Earth TGP in the Terrestrial Reference System

Kumakshev S.: The Model and the Prediction of Earth's Pole Motion

Lambert S.: Non-linear terms in the non-rigid Earth's nutations

Nastula J., Kolaczek B.: Studies of regional atmospheric pressure excitation function of polar motion

Perepelkin, V.: Translational rotational motion as a new method in the astrometrical problem of the Earth's motion around the center of mass

Rambaux N., Van Hoolst T., Dehant V.: Earth librations due to core-mantle couplings

Rogister Y., Rochester M.G.: Normal mode theory of a rotating Earth model using a Lagrangian perturbation of a spherical model of reference

Sidorenkov N.: The decade fluctuations of the Earth rotation velocity and the secular polar motion

Stavinschi M., Gambis D., Maris G., Mioc V., Oncica A.: Common periodicities in the Solar activity and the Earth rotation

Stavinschi M., Mioc V.: Astronomical researches in Poincare's and Romanian works

Zhang B., Li J.-L., Wang G.-L., Zhao M.: A discussion on the solution of high frequency variations of ERP

Poster session 2

Andrei A.H., Fienga A., Assafin M., Penna J.L., Schulteis M., Da Silva Neto D.N., Vieira R.,Martins M.: Veron & Veron Based Extragalactic Reference Frame

Badescu O., Popescu P., Popescu R.: A method for accuracy and efficiency's increase of geodetic-astronomical determination of the vertical's deviation

Bolotina O.: Implementation of new models for Earth rotation in data analysis at the Ukrainian Center of the Determination of the EOP

Bucciarelli B., Lattanzi M., Massone G., Poma A., Tang Z., Uras S.: Realisation of faint Reference catalogues around ICRF radio sources from photographic observations

Camargo J.: Precise near-infrared astrometry and photometry of Southern ICRF quasars

Coulot D.: Combination of space Geodesy techniques for monitoring the kinematics of the Earth.

Damljanovic G, Vondrak J.: Improved proper motions in declination of some Hipparcos stars derived from observations of latitude

Fey A.: Improving the ICRF in the Southern Hemisphere

Kosek W., Kalarus M., Johnson T.J., Wooden W. H., McCarthy D.D., Popinsk W.: A comparison of UT1-UTC forecasts by different prediction techniques

Kumkova I., Stepashkin M.: Estimation of relativistic contributions in the GCRS-ITRS transformation

Lopez Orti J.A.: A new method to dynamical analysis of orientation errors from non regular samples

Marco F.: Infinitesimal variations in the Reference and their implications on the Minor Planets elements and masses

Mart�nez Mar�a J.: Two Independent estimations for the epsilon_zeta value in the Hipparcos-FK5 catalogues

Nastula J., Gambis D.: Assessment of quality of polar motion series derived from space geodetic techniques

Pireaux S.: Relativistic modeling of the orbit of geodetic satellites equipped with accelerometers

Popescu R., Nedelcu A.: Astrometrical position of NEO inferred from CCD observations at Bucharest

Sokolova J.: Influence of the early VLBI observations on ICRF stability

Soma M.: TT-UT obtained from ancient solar eclipses observed at plural sites

Yu Y., Tang Z.-H., Li J.-L., Zhao M.: Application of block adjustment of overlapping CCD frames

Zhu Z., Zhang H. : Galactic warping motion from Hipparcos proper motions and radial velocity