Results 11 to 20 of about 1,040,988 (296)

GOCE gravity models and gravity gradient assessment [PDF]

open access: yes, 2011
The GOCE (Gravity field and steady-state Ocean Circulation Explorer) mission launched on 17 March 2009 provides for the first time Satellite Gravity Gradiometer (SGG) data. It is designed to recover the Earth gravity anomaly field with an accuracy of better than 1 to 2 mGal with a spatial resolution of 100 km or less.
Wang, Lin
openaire   +4 more sources

Gravity gradient noise from asteroids [PDF]

open access: yesPhysical Review D, 2021
The gravitational coupling of nearby massive bodies to test masses in a gravitational wave (GW) detector cannot be shielded, and gives rise to 'gravity gradient noise' (GGN) in the detector. In this paper we show that for any GW detector using local test masses in the Inner Solar System, the GGN from the motion of the field of $\sim 10^5$ Inner Solar ...
Michael A. Fedderke   +2 more
openaire   +2 more sources

Improving the Detection Accuracy of Underwater Obstacles Based on a Novel Combined Method of Support Vector Regression and Gravity Gradient

open access: yesRemote Sensing, 2023
Underwater gravity gradient detection techniques are conducive to ensuring the safety of submersible sailing. In order to improve the accuracy of underwater obstacle detection based on gravity gradient detection technology, this paper studies the gravity
Tengda Fu   +5 more
doaj   +1 more source

Calibration for GOCE Gradiometer Data Based on the Prior Gravity Models [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2019
The determination of the calibration parameters of the gravity gradiometer play an important role in the GOCE gravity gradient data processing. In this paper, the temporal signals and outliers in the GOCE gravity gradient observations are analyzed. Based
Qingliang QU,Xiaotao CHANG,Shengwen YU,Guangbin ZHU
doaj   +1 more source

Seafloor Topography Estimation from Gravity Anomaly and Vertical Gravity Gradient Using Nonlinear Iterative Least Square Method

open access: yesRemote Sensing, 2020
Currently, seafloor topography inversion based on satellite altimetry gravity data provides the principal means to predict the global seafloor topography. Researchers often use sea surface geoid height or gravity anomaly to predict sea depth in the space
Diao Fan   +4 more
doaj   +1 more source

Bathymetric Prediction from Multi-source Satellite Altimetry Gravity Data [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2019
According to the “theoretical admittance " and the "observation admittance" of the actual data, the theoretical value of effective elastic thickness in the study area was 10km.
Diao FAN,Shanshan LI,Shuyu MENG,Chi ZHANG,Jinkai FENG,Yan HUANG,Jiawei DU,Zhibin XING
doaj   +1 more source

The new development direction of seismic gravity observation technology: Integrated measuring of absolute gravity and vertical gravity gradient

open access: yes地震科学进展, 2023
The integrated and array observation of the high-precision absolute gravity and gravity gradient can effectively improve the identification accuracy of gravity field sources at different depths.
Qiong Wu, Jiansheng Xu
doaj   +1 more source

Research and Construction of a Global Hexagonal Marine Gravity Gradient Reference Map for Navigation

open access: yesGeofluids, 2023
A high-precision marine gravity gradient reference map is key to enabling underwater gravity gradient matching navigation. At present, the construction of the reference maps is based on quadrilateral geographic grids. However, quadrilateral grids lead to
Huang Yan   +7 more
doaj   +1 more source

Ocean dynamic equations with the real gravity

open access: yesScientific Reports, 2021
Two different treatments in ocean dynamics are found between the gravity and pressure gradient force. Vertical component is 5–6 orders of magnitude larger than horizontal components for the pressure gradient force in large-scale motion, and for the ...
Peter C. Chu
doaj   +1 more source

On the Consistency between a Classical Definition of the Geoid-to-Quasigeoid Separation and Helmert Orthometric Heights

open access: yesSensors, 2023
It is acknowledged that a classical definition of the geoid-to-quasigeoid separation as a function of the simple planar Bouguer gravity anomaly is compatible with Helmert’s definition of orthometric heights.
Robert Tenzer, Albertini Nsiah Ababio
doaj   +1 more source

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