Gravity, Geoid and Earth Observation: IAG Commission 2: Gravity Field, Chania, Crete, Greece, 23-27 June 2008

Front Matter....Pages i-xxxiv
Front Matter....Pages 1-1
Preliminary Results of a GPS/INS Airborne Gravimetry Experiment Over the German Alps....Pages 3-9
Co-seismic Gravity Changes Computed for a Spherical Earth Model Applicable to GRACE Data....Pages 11-17
On Ambiguities in Definitions and Applications of Bouguer Gravity Anomaly....Pages 19-24
Harmonic Continuation and Gravimetric Inversion of Gravity in Areas of Negative Geodetic Heights....Pages 25-30
Results of the European Comparison of Absolute Gravimeters in Walferdange (Luxembourg) of November 2007....Pages 31-35
Aerogravity Survey of the German Bight (North Sea)....Pages 37-46
Results of the Seventh International Comparison of Absolute Gravimeters ICAG-2005 at the Bureau International des Poids et Mesures, Sèvres....Pages 47-53
Post-Newtonian Covariant Formulation for Gravity Determination by Differential Chronometry....Pages 55-58
Robust and Efficient Weighted Least Squares Adjustment of Relative Gravity Data....Pages 59-65
Comparison Between GPS Sea Surface Heights, MSS Models and Satellite Altimetry Data in the Aegean Sea. Implications for Local Geoid Improvement....Pages 67-73
First Experience with the Transportable MPG-2 Absolute Gravimeter....Pages 75-81
Absolute Gravimetry at BIPM, Sèvres (France), at the Time of Dr. Akihiko Sakuma....Pages 83-91
Correcting Strapdown GPS/INS Gravimetry Estimates with GPS Attitude Data....Pages 93-100
Gravity Measurements in Panama with the IMGC-02 Transportable Absolute Gravimeter....Pages 101-105
Comparison of Height Anomalies Determined from SLR, Absolute Gravimetry and GPS with High Frequency Borehole Data at Herstmonceux....Pages 107-113
Vibration Rejection on Atomic Gravimeter Signal Using a Seismometer....Pages 115-121
Gravity vs Pseudo-Gravity: A Comparison Based on Magnetic and Gravity Gradient Measurements....Pages 123-127
Front Matter....Pages 129-129
Designing Earth Gravity Field Missions for the Future: A Case Study....Pages 131-138
Regional Gravity Field Recovery from GRACE Using Position Optimized Radial Base Functions....Pages 139-146
External Calibration of SGG Observations on Accelerometer Level....Pages 147-154
Front Matter....Pages 129-129
Covariance Propagation of Latitude-Dependent Orbit Errors Within the Energy Integral Approach....Pages 155-161
Future Mission Design Options for Spatio-Temporal Geopotential Recovery....Pages 163-170
A Simulation Study Discussing the GRACE Baseline Accuracy....Pages 171-176
GRACE Gravity Field Determination Using the Celestial Mechanics Approach – First Results....Pages 177-184
Fast Variance Component Estimation in GOCE Data Processing....Pages 185-193
Analysis of the Covariance Structure of the GOCE Space-Wise Solution with Possible Applications....Pages 195-202
Front Matter....Pages 203-203
Soil Surface Moisture From EnviSat RA-2: From Modelling Towards Implementation....Pages 205-212
An Enhanced Ocean and Coastal Zone Retracking Technique for Gravity Field Computation....Pages 213-220
Measurement of Inland Surface Water from Multi-mission Satellite Radar Altimetry: Sustained Global Monitoring for Climate Change....Pages 221-229
ACE2: The New Global Digital Elevation Model....Pages 231-237
Ocean Dynamic Topography from GPS – Galathea-3 First Results....Pages 239-245
Filtering of Altimetric Sea Surface Heights with a Global Approach....Pages 247-252
Coastal Sea Surface Heights from Improved Altimeter Data in the Mediterranean Sea....Pages 253-261
On Estimating the Dynamic Ocean Topography – A Profile Approach....Pages 263-269
Front Matter....Pages 271-271
Evaluation of the Topographic Effect using the Various Gravity Reduction Methods for Precise Geoid Model in Korea....Pages 273-281
Analysis of Recent Global Geopotential Models Over the Croatian Territory....Pages 283-288
On the Merging of Heterogeneous Height Data from SRTM, ICESat and Survey Control Monuments for Establishing Vertical Control in Greece: An Initial Assessment and Validation....Pages 289-294
Implementing a Dynamic Geoid as a Vertical Datum for Orthometric Heights in Canada....Pages 295-302
Evaluation of the Quasigeoid Models EGG97 and EGG07 with GPS/levelling Data for the Territory of Bulgaria....Pages 303-307
Combination Schemes for Local Orthometric Height Determination from GPS Measurements and Gravity Data....Pages 309-314
Front Matter....Pages 271-271
EUVN_DA: Realization of the European Continental GPS/leveling Network....Pages 315-320
Analysis of the Geopotential Anomalous Component at Brazilian Vertical Datum Region Based on the Imarui Lagoon System....Pages 321-327
Preliminary Results of Spatial Modelling of GPS/Levelling Heights: A Local Quasi-Geoid/Geoid for the Lisbon Area....Pages 329-332
Physical Heights Determination Using Modified Second Boundary Value Problem....Pages 333-338
Front Matter....Pages 339-339
Impact of the New GRACE-Derived Global Geopotential Model and SRTM Data on the Geoid Heights in Algeria....Pages 341-347
On Modelling the Regional Distortions of the European Gravimetric Geoid EGG97 in Romania....Pages 349-354
Effect of the Long-Wavelength Topographical Correction on the Low-Degree Earth’s Gravity Field....Pages 355-360
A Comparison of Various Integration Methods for Solving Newton’s Integral in Detailed Forward Modelling....Pages 361-368
Further Improvements in the Determination of the Marine Geoid in Argentina by Employing Recent GGMs and Sea Surface Topography Models....Pages 369-375
Comparison of Various Topographic-Isostatic Effects in Terms of Smoothing Gradiometric Observations....Pages 377-381
Evaluation of Recent Global Geopotential Models in Argentina....Pages 383-388
On the Determination of the Terrain Correction Using the Spherical Approach....Pages 389-395
Smoothing Effect of the Topographical Correction on Various Types of the Gravity Anomalies....Pages 397-405
Determination of a Gravimetric Geoid Model of Greece Using the Method of KTH....Pages 407-413
Method to Compute the Vertical Deflection Components....Pages 415-420
On Finite Element and Finite Volume Methods and Their Application in Regional Gravity Field Modeling....Pages 421-426
Quasi-Geoid of New Caledonia: Computation, Results and Analysis....Pages 427-435
Assessment of a Numerical Method for Computing the Spherical Harmonic Coefficients of the Gravitational Potential of a Constant Density Polyhedron....Pages 437-443
Improving Gravity Field Modelling in the German-Danish Border Region by Combining Airborne, Satellite and Terrestrial Gravity Data....Pages 445-450
An Inverse Gravimetric Problem with GOCE Data....Pages 451-456
Front Matter....Pages 457-457
Assessment of the EGM2008 Gravity Field in Algeria Using Gravity and GPS/Levelling Data....Pages 459-466
On High-Resolution Global Gravity Field Modelling by Direct BEM Using DNSC08....Pages 467-472
Is Australian Data Really Validating EGM2008, or Is EGM2008 Just in/Validating Australian Data?....Pages 473-479
Evaluation of EGM08 Using GPS and Leveling Heights in Greece....Pages 481-488
Validation of the New Earth Gravitational Model EGM08 Over the Baltic Countries....Pages 489-496
Evaluation of EGM2008 by Comparison with Global and Local Gravity Solutions from CHAMP....Pages 497-504
Testing EGM2008 on Leveling Data from Scandinavia, Adjacent Baltic Areas, and Greenland....Pages 505-509
Least Squares, Galerkin and BVPs Applied to the Determination of Global Gravity Field Models....Pages 511-517
Front Matter....Pages 519-519
Terrestrial Water Storage from GRACE and Satellite Altimetry in the Okavango Delta (Botswana)....Pages 521-526
Greenland Ice Sheet Mass Loss from GRACE Monthly Models....Pages 527-532
Water Level Temporal Variation Analysis at Solimões and Amazonas Rivers....Pages 533-538
Spatiotemporal Analysis of the GRACE-Derived Mass Variations in North America by Means of Multi-Channel Singular Spectrum Analysis....Pages 539-546
Analysing Five Years of GRACE Equivalent Water Height Variations Using the Principal Component Analysis....Pages 547-555
Observed Gravity Change at Syowa Station Induced by Antarctic Ice Sheet Mass Change....Pages 557-562
Evaluation of GRACE and ICESat Mass Change Estimates Over Antarctica....Pages 563-569
Baltic Sea Mass Variations from GRACE: Comparison with In Situ and Modelled Sea Level Heights....Pages 571-577
Water Storage in Africa from the Optimised GRACE Monthly Models: Iterative Approach....Pages 579-586
Estimating Sub-Monthly Global Mass Transport Signals Using GRACE, GPS and OBP Data Sets....Pages 587-593
Regular Gravity Field Variations and Mass Transport in the Earth System from DEOS Models Based on GRACE Satellite Data....Pages 595-602
Estimating GRACE Monthly Water Storage Change Consistent with Hydrology by Assimilating Hydrological Information....Pages 603-610
Front Matter....Pages 519-519
Secular Geoid Rate from GRACE for Vertical Datum Modernization....Pages 611-617
Ten-Day Gravity Field Solutions Inferred from GRACE Data....Pages 619-623
Front Matter....Pages 625-625
GGP (Global Geodynamics Project): An International Network of Superconducting Gravimeters to Study Time-Variable Gravity....Pages 627-635
Surface Mass Loading Estimates from GRACE and GPS....Pages 637-642
A Unified Approach to Modeling the Effects of Earthquakes on the Three Pillars of Geodesy....Pages 643-649
Modeling and Observation of Loading Contribution to Time-Variable GPS Sites Positions....Pages 651-659
Investigating the Effects of Earthquakes Using HEPOS....Pages 661-668
Assessment of Degree-2 Zonal Gravitational Changes from GRACE, Earth Rotation, Climate Models, and Satellite Laser Ranging....Pages 669-676
Front Matter....Pages 677-677
PALSAR InSAR Observation and Modeling of Crustal Deformation Due to the 2007 Chuetsu-Oki Earthquake in Niigata, Japan....Pages 679-687
On the Accuracy of LiDAR Derived Digital Surface Models....Pages 689-695
Multiscale Segmentation of Polarimetric SAR Data Using Pauli Analysis Images....Pages 697-701