Proceedings of the 56th Colloquium of the International Astronomical Union held in Warsaw, Poland, September 8-12, 1980

Inhalt

Reference Coordinate Systems for Earth Dynamics: A Preview (Review).- Establishment of Terrestrial Reference Frames by New Observational Techniques (Review).- Ideal Reference Frames, Concepts and Interrelationships (Review).- Relativistic Effects in Reference Frames (Review).- Kinematic and Dynamic Reference Frames (Review).- Reference Coordinate System Requirements for Space Physics and Astronomy (Review).- Celestial Reference Frames (Review).- Some Geodetic Aspects of the Plate Tectonics Hypothesis (Review).- The Theoretical Description of the Nutation of the Earth (Invited).- The Definition of the Terrestrial Coordinate Frame by Long Baseline Interferometry (Invited).- A New Parameterization of Polar Motion.- Comments on the Terrestrial Pole of Reference, the Origin of the Longitudes, and on the Definition of UTl (Invited).- The Effects of the Reference Frames and of their Realization on the Earth Rotation Parameters Computed from Different Observational Techniques (Invited).- On the Adoption of a Terrestrial Reference Frame (Invited).- On the Establishment of Terrestrial Coordinate System by Classical Techniques (Invited).- On Reference Coordinate Systems Used in Polar Motion Determinations (Invited).- The Short Period Latitude Variations Derived from Recalculated Past ILS Observations.- Determination of "Decade" Fluctuations in the Earth's Rotation, 1620-1978.- On the Annual Earth's Rotation.- Positioning with the Global Positioning System (Invited).- Relationship between Terrestrial and Satellite Doppler Systems (Invited).- Some Considerations in the Use of Very-Long-Baseline-Interferometry to Establish Reference Coordinate Systems for Geodynamics (Invited).- Use of Gravity Measurements in Defining and Realizing Reference Systems for Geodynamics (Invited).- Local Geometric and Gravimetric Datum and Its Relation to the Global Terrestrial Reference System.- Errors in Pole Coordinate Obtained by the Doppler Satellite Positionings (Invited).- Motions of Artificial Satellites and Coordinate Systems (Invited).- Origin and Scale of Coordinate Systems in Satellite Geodesy (Invited).- Critical Remarks on the Possibility of Determining Variations of the Geocenter Position Using Geostationary Satellite Observations.- The Reference Frames and a Transformation of the Spherical Functions.- Concepts of Reference Frames for a Deformable Earth.- Combined Space Geodetic and Geophysical Measurements for Studies of Crustal Movement in Scandinavia.- Dynamics of an Artificial Satellite in an Earth-Fixed Reference Frame: Effects of Polar Motions.- A Note on the Origin, Objectives and Programme of Project Merit.- The Application of Faint Minor Planet Dynamics to the Problems of Improving the Fundamental Reference System (Invited).- Relativistic Reduction of Astronomical Measurements and Reference Frames (Invited).- Planetary Ephemerides (Invited).- New Celestial Reference System (Invited).- Apport des Observations d'Occultations Stellaires en vue du Rattachement du Systeme Dynamique au Systeme Geometrique (Invited).- Dynamical Constants and Reference Parameters for Mars.- Orientation of FK4 System from Meridian Observations of Planets.- Definition and Practical Realization of the Reference Frame in the FK5 - The Role of Planetary Dynamics and Stellar Kinematics in the Definition (Invited).- The Stellar Reference Frame from Space Observations (Invited).- Dynamical Equinox and Analytical Theory of the Sun.- Development of a Radio-Astrometric Catalog by Means of Very Long Baseline Interferometry Observations.- Systematic Differences between Radio Astrometric Surveys.- Contribution des Astrolabes au Raccordement des Systemes de Reference "Optique" et "Radio".- An Attempt to Compare the Radio Astronomical System of Coordinates of Quasars with FK4.- Comments on Conventional Terrestrial and Quasi-Inertial Reference Systems.- Resolution.