Geodesy on the move : gravity, geoid, geodynamics and Antarctica : IAG Scientific Assembly, Rio de Janeiro, Brazil, September 3-9, 1997

Based on the IAG scientific assembly in Rio de Janeiro, Brazil, this volume combines papers in the fields of gravity and geoid, geodynamics, and geodesy in Antarctica. The volume contains papers on recent progress in absolute and relative gravimetry, on models of the global gravity field, theoretical developments in physical geodesy, and many examples of regional gravity field and geoid models. Geodynamics chapters include papers on earth rotation and geopotential variations, reference frames and global deformations, as well as a section on the combination of space and terrestrial methods for deformation observations. The current status of geodesy in Antarctica is illustrated by a number of papers describing large-scale and local observation campaigns, the establishment of fundamental geodetic reference stations, and the utilization of new techniques such as SAR interferometry. Front Matter....Pages I-XX The changing role of gravity reference networks....Pages 1-10 Improving Accuracy and Reliability of Airborne Gravimetry by Multiple Sensor Configurations....Pages 11-17 Combining Airborne and Ground Gravity Using Collocation....Pages 18-23 Comparisons between Absolute (AG) and Superconducting (SG) Gravimeters....Pages 24-29 An Airborne Geoid Mapping System for regional sea-surface topography: application to the Skagerrak and Azores areas....Pages 30-36 The German Gravity Base Net 1994 (DSGN 1994)....Pages 37-44 SAR Data Acquisitions at Syowa Station in Antarctica....Pages 45-50 The National Gravimetric Network of Uruguay....Pages 51-57 Past and Future Developments in Geopotential Modeling....Pages 58-78 The World of Gravity According to Rapp....Pages 79-91 Gravity Field Improvement Activities at NASA GSFC....Pages 92-98 The Development by the National Imagery and Mapping Agency of a Global Surface Gravity Anomaly Database for the EGM96 Geopotential Model and Future Applications....Pages 99-104 On The Possibility to Estimate Ocean Bottom Topography from Marine Gravity and Satellite Altimeter Data Using Collocation....Pages 105-112 Generating Orthometric Heights from the ERS-1 Altimeter Geodetic Mission Dataset: Results from an Expert Systems Approach....Pages 113-118 Use Of ERS-1 Land Altimetry to Validate the GLOBE Global Digital Elevation Model....Pages 119-124 Geodetic Application Of ERS-1 Altimeter Data Over Land....Pages 125-131 Global Marine Gravity and Mean Sea Surface from Multi Mission Satellite Altimetry....Pages 132-137 Sea Level Variations Measured by TOPEX/POSEIDON and by Tide Gauges: A Validation Study in the Southern Baltic Sea....Pages 138-143 Observed Inconsistencies between Satellite-Only and Surface Gravity-Only Geopotential Models....Pages 144-149 A Comparison of Satellite Altimetry Methods for the Recovery of Gravity Field Quantities....Pages 150-155 Gravity determination in ice covered regions by altimetry....Pages 156-162 Apriori Estimates of the Solution of the Geodetic Boundary Value Problem....Pages 163-169 Application of Multiresolution Filtering in Spectral Geoid Determination....Pages 170-175 Geoid Computation by Collocation in Scaling Spaces....Pages 176-181 An Efficient Technique for the Computation of the Gravimetric Quantities from Geopotential Earth Models....Pages 182-187 Modified Kernels in Spectral Geoid Determination: First Results from Western Australia....Pages 188-193 Geoids and Cap Sizes....Pages 194-200 The Effects of Varying Cap Sizes on Geoid Computations: Experiences with FFT and Ring Integration....Pages 201-206 A Comparison of Techniques for the Integration of Satellite Altimeter and Surface Gravity Data for Geoid Determination....Pages 207-212 Application of Spherical Wavelets for Regional Gravity Field Recovery — A Comparative Study....Pages 213-218 Comments on Two Dimensional Convolutions of the Geodetic Problems in Planar and Spherical Coordinates....Pages 219-224 Overdetermined Gravity Gradiometry Boundary Value Problem: Theory and Simulation....Pages 225-230 Investigations of the Earth’s Relativistic Gravity Field....Pages 231-236 Geoid and Mass Density — Why and How?....Pages 237-242 Operational Merging of Satellite, Airborne and Surface Gravity Data by Draping Techniques....Pages 243-248 The European Gravimetric Quasigeoid EGG97 - An IAG Supported Continental Enterprise -....Pages 249-254 A Preliminary Geoid Model for Argentina....Pages 255-261 The Gravimetric Geoid in Algeria: First Results....Pages 262-268 Geoid Studies in the North-East Atlantic (Azores-Portugal)....Pages 269-274 The Gravimetric Geoid for Libya....Pages 275-280 Comparison between Altimetric and Gravimetric Geoid in the South — West Mediterranean Basin....Pages 281-287 Data Processing for a Geoid Model in Argentina....Pages 288-293 Decimetric Geoid for Buenos Aires Province Based on Gps and Global Models....Pages 294-299 Towards a Regional Geoid Determination in Western Venezuela....Pages 300-305 Improved Gravimetric Geoid AGG97 of Austria....Pages 306-311 Metrology of the Earth’s Rotation Over 1988–1997....Pages 312-317 Earth Orientation Parameter Analysis from VLBI Data....Pages 318-324 Tempo: Determining, Combining, and Predicting Earth Orientation Parameters for Spacecraft Navigation....Pages 325-325 Possible Temporal Variations of the Free Core Nutation and Forced Nutations....Pages 326-331 Excitation of Nutation as Deduced from Results of the Recent Atmospheric Reanalysis Project....Pages 332-332 Regional Atmospheric Angular Momentum Contributions to Polar Motion Excitation....Pages 333-338 Time-Frequency Characteristics of the Pressure Term of the Eaam Excitation Functions in Some Geographic Regions....Pages 339-344 The Spacetime Gravitational Field of a Deformable Body....Pages 345-345 Temporal Variation of the Geopotential: Processes and Interactions among the Earth’s Subsystems....Pages 346-351 Monitoring Geoidal Potential on the Basis of Topex/Poseidon Altimeter Data and EGM96....Pages 352-358 Absolute positioning, tectonic plate motions and polar motion determination with the DORIS system....Pages 359-364 Geodetic Baseline Adjustment by VLBI Technique....Pages 365-370 Adjustment of a European Combined GPS-SLR-VLBI Fundamental Network....Pages 371-376 Combination of VLBI, SLR and GPS Determined Station Velocities for Actual Plate Kinematic and Crustal Deformation Models....Pages 377-382 Ge odesy D emonstration Ex periment (Gedex) For Space VLBI: State of the Art and Software Development....Pages 383-388 An Integrated Crustal Movement Monitoring Network in China....Pages 389-393 VLBI, SLR and GPS observations in the Key Stone Project....Pages 394-399 Cooperation of Sixteen CEI (Central European Initiative) Countries in Geodesy and Geodynamics....Pages 400-405 No Relative Movements between South American and Scotia Plates in Tierra Del Fuego....Pages 406-410 A Numerical Model for the Study of the Load Effect of the Water in the Area of the River Plate....Pages 411-416 Crustal Deformation along the Caribbean — South American Plate Boundary Derived From The Casa GPS Project....Pages 417-422 The Aqaba Earthquake of November 22, 1995 and Co-Seismic Deformation in Sinai Peninsula, Deduced from Repeated GPS Measurements....Pages 423-423 Fault Model of the 1995 North Sakhalin Earthquake Based on SAR Interferogram....Pages 424-424 Integration of GPS Algerian Sites in West Mediterranean Geodynamical Studies: Case of Tyrgeonet Project....Pages 425-430 Multi-Parametric Experiment for Observing Crustal Deformations in Southern Brazil....Pages 431-436 The determination of motion rates of blocks in the Qinghai-Tibet Plateau by GPS measurements....Pages 437-442 Detection of Crustal Deformations by SAR Interferometry in Combination with Dense GPS Array....Pages 443-443 Modelling Vertical Crustal Deformation in Time and Position Domains, Inferred from GPS Levelling....Pages 444-449 Comparison of Crustal Deformations Observed with GPS and Strainmeters/Tiltmeters....Pages 450-458 Present-Day Kinematics of Central Asia Derived by Joint Inversion of Geological and Geodetic Data....Pages 459-459 Application of the Anomaly of Astrometric Observations to Earthquake Prediction Study....Pages 460-464 Interdisciplinary Studies of Astronomical Factors and Earthquakes in China....Pages 465-471 The Ice-Age Geodynamics of Antarctica....Pages 472-472 Elevation changes in Antarctica 1992–1996: Implications for Ice Sheet Mass Balances....Pages 473-473 The SCAR GPS Campaigns: Accurate Geodetic Reference in Antarctica....Pages 474-479 Uruguayan Contribution to the Antarctic Geodesy....Pages 480-485 GPS for ice sheet movement monitoring and grounding line detection....Pages 486-491 Comparison of Altimetric and Ship borne Marine Gravity over Ice-free and Ice-covered polar Seas....Pages 492-497 Italian geodetic network as reference frame for geodynamic purposes (Terra Nova Bay — Victoria Land — ANTARCTICA)....Pages 498-503 Ice-Ocean-Solid Earth Interactions in Dronning Maud Land/Antarctica: A Geodetic Approach to Solve Open Questions....Pages 504-509 The Contribution of the Geodetic Observatory O’Higgins to the Realization of a Geodetic Reference Frame in Antarctica....Pages 510-516 Towards a new Free Air Anomaly Map of the Antarctic Peninsula....Pages 517-522 Regional Geoid Improvement Based on Surface Gravity Data....Pages 523-528 SAR Interferometry for Improved Terrain Corrections in Surface and Airborne Gravimetry....Pages 529-534 Crustal Uplift around Syowa Station, Antarctica....Pages 535-540 Geodetical and Geophysical Observations at Syowa Station, Antarctica....Pages 541-546 Back Matter....Pages 547-551