In this paper we use output from hydrological, oceanographic, and atmospheric models to estimate the variability in the gravity field (i.e., in the geoid) due to those sources. We develop a method for constructing surface mass estimates from the GRACE gravity coefficients. We show the results...
External calibration/validation of ESA's GOCE mission and contribution to DOT and SLA determination using a stochastic approach - The GOCESeaComb Project The monitoring the Earth's gravity field both over marine and continental regions has been the focus of extensive geodetic research during the ...
Study of space-time variations of local gravity field for the MIGA antenna and for future low frequency GW detectors Geophysical Research AbstractsJunca, JosephLefèvre, GrégoireBertoldi, AndreaGaffet, StéphaneCanuel, BenjaminBouyer, Philippe
variability. In response to the seasonal groundwater fluctuations, confined aquifers show large deformation (leading to up to 60 mm annual uplift or subsidence at the ground surface10,14,15,16,17) due to the high compressibility of clays, whereas the deformation of unconfined aquifers is ...
The latter is related to ocean heat change and the current Earth's energy imbalance. Since 2002, the Gravity Recovery and Climate Experiment (GRACE) mission has provided monthly snapshots of the Earth's time-variable gravity field, from which one can derive ocean mass variability. However, ...
GFZ Potsdam and GRGS Toulouse have a long-time close cooperation in the field of global gravity field determination. This presentation deals with GFZ's and GRGS' latest satellite-only model EIGEN-6S4 (EIGEN = European Improved Gravity model of the Earth by New techniques). This new model is...
Global gravity fieldTime variationsWe present results of several years of research and data processing aimed at modelling the Mars gravity field and its longest wavelength time variations. The new solution includes tracking data from Mars Global Surveyor (MGS) from 1998 to 2006 (end of mission) ...
The methods of field theory are applied to gravity in a flat space-time. Following considerations of the assumed action principle, tensorial rank of the gravitational potential, and the nonlinear nature of a gravitational field theory in flat space-time, field equations, equations of motion and th...
The tropospheric delay, especially its wet component, has strong spatial and temporal variability, so we smooth the results to obtain the trend line. The differences of ZTD show obvious periodicity, and are inversely proportional to the differences of the solid-earth tide. The amplitude of ZTD ...
2) time change of gravity field 重力场时间变化 1. The latest international development of geodynamics in recent years is introduced in this article,including crustal movement,rotation of the earth, time change of gravity field, and sea level chan. 本文介绍了近年来国际地球动力学最新发展概况 ,...