Gravity, Geoid and Marine Geodesy

Based on an international symposium held in Tokyo, the volume combines papers in the fields of gravity, geoid and marine geodesy. Special emphasis is placed on the use of gravity in modeling tectonic processes and the problems of geophysical inversion. In addition, absolute and relative gravity measurement in static and airborne mode, satellite altimetry, geopotential modeling, and global geodynamics are dealt with. The field of marine geodesy includes contributions on sea level change, seafloor deformation and mapping, sea surface positioning, electronic charting, and datum transformations.

Contenu

Recent progress in the study of crustal movement and geoid determination by the dense GPS network over the Japanese islands.- Seafloor geodesy applied to the study of oceanic spreading centers (abstract).- The current status of absolute gravimetry and some ideas and suggestions for future improvements.- Test results of FG5/112 absolute gravimeter at Wuhan station.- SSIA "Metrology" absolute gravimeters.- Long-term gravity variation observed by an absolute gravimeter with a rotating vacuum pipe.- Absolute determination of gravity in Australia for the purpose of establishment of precise reference frame for mean sea level change monitoring in southwestern Pacific.- Report on the 1995 Table-Mountain International Absolute-Gravity-Meter Intercomparison.- An absolute gravimeter and vibration disturbances: A frequency responses method.- A method for measurement of gravitational acceleration by using a Fabry-Perot interferometer.- Absolute gravity measurements using FG5 at Kyoto Fundamental Gravity Station: Kyoto C, Japan.- Effects of ground vibrations on absolute gravity measurement in Kyoto.- Relative gravimetry and the study of the Earth's structure and dynamics.- An integrated marine gravity survey system.- A rediscussion and interpretation of geodynamic data collected in the last decade in northern Chile in view of the recent seismic activity in Antofagasta.- Polar motion effect on gravity observed with a superconducting gravimeter at Syowa Station, Antarctica.- Gravity effects of sea level variation at the superconducting gravimeter sites, estimated from ERS-1 and TOPEX/POSEIDON altimeter data.- Gravity observation by means of a superconducting gravimeter at Matsushiro, Japan.- Effect of groundwater on gravity observation at Kyoto.- Arctic airborne gravity measurement program.- Airborne geoid measurements in the Arctic Ocean.- Accuracy improvement of airborne vector gravimetry with and without noise PSDs.- Comparison of different approaches to airborne gravimetry by strapdown INS/DGPS.- Development of an airborne geoid mapping system for coastal oceanography (AGMASCO).- The status of spaceborne gravity field mission concepts: a comparative simulation study.- Problems and prospects of the planned gravity missions GOCE and CHAMP.- Global gravity field determination from STEP mission gradiometry observations.- The separation of gravitation and inertia in the first-order gradient.- On random 3D second rank gravity tensors.- Calibration of the C021 superconducting gravimeter in Membach (Belgium) using 47 days of absolute gravity measurements.- Mathematical modelling of ballistic gravimeters.- Data processing for the Japan Gravity Standardization Net 1996.- New adjustment of China Gravity Basic Net.- The establishment of the Japan Gravity Standardization Net 1996.- Determination of precise geoidal height by GPS observations in and around Sakurajima volcano, Japan.- Mass anomalies of Earth, Venus, and Mars: Initial estimates.- Crustal movements observed by GPS fixed-point network in Kanto-Tokai District, Central Japan.- Influence of the shallow seas on the pressure terms of the EAAM function.- The regional atmospheric contributions to the polar motion and EAAM excitation function.- Theoretical modeling of local gravity changes and deformation caused by dilatancy with the magmatic intrusion.- Non-isostatic slab-support for island arcs and back-arc basins.- Interseismic gravity change at a subducting plate margin: A paradoxical observational result at Omaezaki, Tokai, Japan.- Predictions of deformation and gravity change caused by recent melting of Vatnajökull ice cap, Iceland.- Interpretation of gravity low in and around Beppu Bay, Kyushu, Japan.- Hidden fault scarp inferred from gravity analysis and disaster belt of the 1995 Hyogo-ken Nanbu earthquake.- One year of registration with the C021 cryogenic gravimeter at station Membach (Belgium).- Comprehensive ocean tide loading parameters of sites in East Asia with spherical harmonic method.- Gravity, geoid, isostasy and Moho depth in the Ross Sea, Antarctica.- Formulation of the mathematical frame of the joint gravimetric-seismic modelling problem based on analysis of regionally distributed borehole data.- Geoid, Cauchy's problem and displacement.- Relationship between terrain and gravity in central Japan.- The gravity inversion of an interface varying with time.- New altimetric results obtained for Baltic and Mediterranean Sea.- A comparison of marine gravity field modeling methods using non-isotropic a-priori information.- Maps of altimetric gravity based on ERS-1 geodetic phase data.- Tectonic implications of Geosat-GM geoid in the southern oceans, 30°S - 72°S.- Applicability of the 10 Hz sampling data of satellite altimetry.- Improved recovery of the global marine gravity field from the GEOSAT and the ERS-1 Geodetic Mission altimetry.- The arctic and antarctic oceans gravity field from ERS 1 altimetric data.- Improvements in high resolution gravity field modeling at GFZ.- The TEG-3 geopotential model.- The development of the NASA GSFC and NIMA joint geopotential model.- The development of a global gravity anomaly database used in the NIMA/GSFC geopotential model.- International tests of the new GSFC/DMA geopotential models.- Geoid determination in France.- Advanced techniques for mapping gravity and its changes from space.- Laser altimetry in the SELENE Project.- Observation system in Radio Interferometry for selenodesy (RISE).- A modified GRS-80 normal field including permanent tide and atmosphere.- Data coverage improvement for geoid computation in South America.- The European Gravimetric Quasigeoid EGG96.- Geoid of the Nordic and Baltic region from gravimetry and satellite altimetry.- Approximation of regional gravity fields from multi-scale data.- A wavelet-vaguelette analysis of geodetic integral formulae.- A preliminary evaluation of the terrain effects on gravimetric geoid determination in Australia.- The GSD95 geoid model for Canada.- The quest for a new Australian gravimetric geoid.- Improvement of JGEOID 93 by the geoidal heights derived from GPS/Leveling survey.- Using different digital terrain models for a precise Austrian geoid.- A new Belgian geoid determination: BG96.- The Indonesian geoid model 1996.- A new detailed geoid for Latvia.- Geoid height optimisation via sequential least squares method.- Combined adjustment of GPS observations and geoid heights in Japan.- Determination of the quasi-geoid in a mountainous area: example of the Eastern Pyrenees (France).- A strategy for GPS heighting: the Hungarian solution.- Mean sea-level and its seasonal change observed at Syowa Station, East Antarctica.- Decadal polar motion connected with atmospheric pressure and sea level patterns over the North Atlantic Ocean.- Global sea level analysis based on ERS-1 altimeter data.- Sea floor strain measurement using GPS and acoustics.- Seafloor acoustic ranging and the effect of temperature variation.- Application of the Global Positioning System to determine gravity deflections of the vertical at sea.- Application of RTK-GPS to immersion of caisson.- Progress and constraints of real-time carrier phase-based long-range GPS kinematic positioning.- Tests of decimeter-level, differential GPS navigation a long distance away from any reference station, with implications for very accurate positioning at…