Earth rotation and coordinate reference frames : [proceedings of a symposium held within the General Meeting of the IAG in Edinburgh, Scotland, August 10-11, 1989

Over the past ten years, since the MERIT project began in 1980, great changes have taken place and significant advances made in the area of Earth Rotation and Coordinate Reference Frames. Symposium 105, held at the 125th Anniversary Meeting of the International Association of Geodesy, August 1989, was devoted to this subject. Major improvements in techniques, such as VLBI and laser ranging, have been accompanied by corresponding improvements in data-processing procedures and theories of relevant phenomena. The papers included in this volume provide both a comprehensive record of past discoveries and a sound basis for further advances. Section headings are as follows: - Earth Rotation: Determination and Prediction - Earth Rotation: Interpretation - Reference Frames Front Matter....Pages i-x Accuracy of the Determination or Prediction of Earth Orientation Parameters....Pages 1-9 Earth Orientation Determinations : Some Tests of Consistency....Pages 10-14 The ZIPE Solution for the Earth’s Rotation Parameters and Some Accuracy Estimations....Pages 15-23 Satellite Laser Ranging and Orbit Determination at Nottingham University....Pages 24-34 Universal Time Prediction using Both Geodetic and Atmospheric Angular Momentum Data....Pages 35-39 Prediction of Polar Motion by Least-Squares Collocation....Pages 40-49 Polar Motion Prediction by the Least-Squares Collocation Method....Pages 50-57 Atmospheric Excitation of the Earth’s Rotation....Pages 58-66 The Earth-Atmosphere Momentum Budget: Remaining Discrepancies at High and Low Frequencies....Pages 67-73 Air and Water Contributions to Polar Motion Excitation....Pages 74-81 On Polar Motion Equations Applied for Analysis of the Short Term Atmospheric Excitation....Pages 82-89 A 30–60 Day Oscillation in Length-of-Day and Atmospheric Angular Momentum: Extratropical Origin?....Pages 90-97 Origin of the 30–60 Day Oscillation in the LOD and Atmospheric Angular Momentum: New Findings from the UCLA General Circulation Model....Pages 98-105 A 120-Day Oscillation in Solar Activity and Geophysical Phenomena....Pages 106-106 Numerical Analysis of Earth Rotation and Atmospheric Angular Momentum Parameters....Pages 107-114 Definition of a Terrestrial Reference Frame using IRIS VLBI Observations; Approaching Millimeter Accuracy....Pages 115-122 Contribution of SLR to Earth Rotation and Terrestrial Reference Frames....Pages 123-130 Global Station Coordinates and Earth Rotation Parameters from LAGEOS Laser Ranging....Pages 131-136 The IERS Terrestrial Reference Frame....Pages 137-137 The Optimum Conventional Terrestrial System Determined by VLBI and SLR Stations....Pages 138-145 The Secular Drift of the Rotation Pole....Pages 146-153 The Use of the Celestial Pole Coordinates in the Transformation Between the Celestial and Terrestrial Reference Frames....Pages 154-157 Space-VLBI: A New Technique for Unification of Reference Frames....Pages 158-165 Back Matter....Pages 166-166 A symposium held at the 125th Anniversary Meeting of the International Association of Geodesy was concerned with Earth rotation and co-ordinate reference frames. A selection of papers from the symposium included in this volume provide a record of past discoveries and a basis for further advances.