Determination of the Geoid: Present and Future

Front Matter....Pages i-xi
Welcome Address....Pages 1-3
Front Matter....Pages 5-5
OSU89A/B Potential Coefficient Models....Pages 7-9
The Aliasing Effect in Coefficients Estimation....Pages 10-15
GRIM-4 — A New Global Earth Gravity Model (Status Report)....Pages 16-17
Geoid Recovery at 0.5 Degree Resolution from Global Satellite Gradiometry Data Sets....Pages 18-29
Compact Approximation of the Geoid Height on the Base of Modified High Resolution Global Geopotential Models....Pages 30-39
An Improved Method to the Earth’s Potential Coefficients Estimation....Pages 40-48
Front Matter....Pages 49-49
Review of Geoid Prediction Methods in Mountainous Regions....Pages 51-62
Estimation of the Gravity Field and Sea Surface Heights from Heterogeneous Data in the Central Mediterranean....Pages 63-74
Altimetry Based Geoid Determination at the German Processing and Archiving Facility within the ERS-1 Project....Pages 75-85
The Determination of Oceanic Geoid Using Modified Hotine Integral....Pages 86-94
A Strategy for Gross-Error Detection in Satellite Altimeter Data Applied in the Baltic-Sea Area for Enhanced Geoid and Gravity Determination....Pages 95-107
Altimetry Rank Deficiency in Crossover Adjustment....Pages 108-118
Practical Considerations in the Use of FFT Methods for Computing Terrain Effects....Pages 119-128
Regularization by Digital Topography and by Estimating Crustal Parameters from Gravity Field Data: Example of Switzerland....Pages 129-138
Front Matter....Pages 139-139
Estimation of the Disturbing Potential Components and Comparison with GPS and Astrogeodetic Data....Pages 141-151
GPS Control of the 1989 Gravimetric Quasigeoid for the Federal Republic of Germany....Pages 152-159
Orthometric Heights Using GPS in Canada....Pages 160-172
Determination of the Regional Geoid from Simulated GPS Measurements by the Aristoteles Solid-Earth Satellite....Pages 173-182
Gravimetric and Astrogeodetic Measurements at GPS Locations in Karakorum....Pages 183-183
Front Matter....Pages 139-139
GPS and Spirit Leveling Measurements in NE Italy....Pages 184-184
Front Matter....Pages 185-185
Comparison of Geopotential Models in the Region of Hungary....Pages 187-188
Test Computations for a Local Quasigeoid in Hungary Using FFT....Pages 189-190
Derivation of the Most Reliable Geoid in the Area of Japan and Some Comments on the Variablility of Sea Surface Topography....Pages 191-200
ITALGEO ’90: Progress Report June ’90....Pages 201-213
New Gravimetric Geoid for Canada: The “UNB ’90” Solution....Pages 214-219
The Swiss Geoid Computation: A Status Report....Pages 220-229
Estimation Models of Geoid in Nigeria Using Doppler Satellite Observations....Pages 230-240
A New High-Resolution Geoid of the Nordic Area....Pages 241-250
Geoid Evaluation in Australia Status and Problems....Pages 251-260
Free-Air Gravity Anomalies in Kenya....Pages 261-268
Efforts towards a Preliminary Gravimetric Geoid Computations in Poland Area....Pages 269-275
The Gravimetric Geoid in Spain: First Results....Pages 276-285
Finland....Pages 286-286
Possible Improvements of the Existing European Geoid....Pages 287-295
Front Matter....Pages 297-297
Nonspherical boundary value problem by pseudodifferential operators....Pages 299-310
A Global Geoid Computation by a Solution of the Bipotential Equation....Pages 311-320
The Geoid and Its Computation from the Gravimetric Boundary Value Problem....Pages 321-332
Some Integral Formulas for a Non-Spherical Earth....Pages 333-338
Coerciveness and Geometry in the Linear Gravimetric Boundary Value Problem — Reduced Version....Pages 339-348
Front Matter....Pages 297-297
Holes in Boundary and Out-of-Boundary Data....Pages 349-356
The Boundary Equation Approach to the Geoid....Pages 357-364
The Geoid, Green’s Functions and the Gravimetric Boundary Value Problem for the Spheroid Earth....Pages 365-373
Correlation of Strain Representations of the Potential Anomalies with the Geoid....Pages 374-381
On the Joint Use of Seismic and Gradiometric Data in Identifying Density Anomalies....Pages 382-391
Front Matter....Pages 393-393
A New Direct Solution of the Transformation Problem of Cartesian into Ellipsoidal Coordinates....Pages 395-404
Stokes formula using Fast Fourier Techniques....Pages 405-408
Simulation of Regional Gravity Field Recovery from Satellite Gravity Gradiometer Data Using Collocation and FFT....Pages 409-409
The GEMT1 Variance-Covariance Matrix, its Characteristics and Applications in Geoid Computations....Pages 410-421
Some Accuracy Estimates of Local Geoids....Pages 422-431
Numerical Behaviour of Covariance Matrices and Their Influence on Iterative Solution Techniques....Pages 432-441
Fast Collocation....Pages 442-443
Front Matter....Pages 445-445
Preprocessing of Altimetric and Gravimetric Data in the Mediterranean Area....Pages 449-462
Data Collection, Data Validation and statistics of Geophysically Relevant Data....Pages 463-467
GEOMED Gravimetry Data Validation: Status Report....Pages 468-475
Analysis of Geosat Altimeter Data....Pages 476-483
Use of Point Masses on Optimized Positions for the Approximation of the Gravity Field....Pages 484-493
Back Matter....Pages 494-500