Results 1 to 10 of about 115,147 (194)

Characteristics of Marine Gravity Anomaly Reference Maps and Accuracy Analysis of Gravity Matching-Aided Navigation. [PDF]

Sensors (Basel), 2017
The variation of a marine gravity anomaly reference map is one of the important factors that affect the location accuracy of INS/Gravity integrated navigation systems in underwater navigation. In this study, based on marine gravity anomaly reference maps,
Wang H, Wu L, Chai H, Xiao Y, Hsu H, Wang Y.   +5 more
europepmc   +2 more sources

SDUST2023GRA_MSS: the new global marine gravity anomaly model determined from mean sea surface model. [PDF]

Sci Data
The global marine gravity anomalies are primarily recovered from geoid gradients in the along-track directions obtained through satellite altimetry. However, the accuracy of the gravity model is significantly constrained by the sparse geoid gradients in ...
Guo J, Wei X, Li Z, Jia Y, Chang X, Liu X.   +5 more
europepmc   +2 more sources

Refining satellite Altimetry-Derived gravity anomaly model with shipborne gravity using multilayer perceptron neural networks. [PDF]

Sci Rep
This study refines the gravity anomaly model derived from altimetry data by employing a multilayer perceptron (MLP) neural network to integrate multi-source geophysical data (longitude, latitude, gravity anomaly, geoid height, bathymetry, and sediment ...
Xiao C, Guo J, Zhu C, Li H, Liu S, Liu X.   +5 more
europepmc   +2 more sources

Gravity data reduction, Bouguer anomaly, and gravity disturbance

Геофизический журнал, 2023
Each point on the earth has a gravity and gravity potential value. Surfaces formed by connecting points with equal gravity potential values are called equipotential surfaces or level surfaces.
Yi. Nazan
doaj   +2 more sources

Comparative Study on Predicting Topography from Gravity Anomaly and Gravity Gradient Anomaly

Remote Sensing, 2023
Owing to the dependence of algorithms on the measurement of ship soundings and geophysical parameters, the accuracy and coverage of topography still need to be improved. Previous studies have mostly predicted topography using gravity or gravity gradient,
Huan Xu, Yuwei Tian, Jinhai Yu, Ole Baltazar Anderson, Qiuyu Wang, Zhongmiao Sun   +5 more
doaj   +3 more sources

Gravity variations determined from GRACE and GRACE-FO monthly solutions for analyzing water mass changes in the Aral Sea [PDF]

E3S Web of Conferences, 2023
The GRACE large-scale sequent GRACE-FO gravity satellite mission is providing monthly gravity field solutions for almost 20 years enabling a unique opportunity to monitor large-scale mass variation processes.
Foldvary Lorant, Statov Victor, Mamutov Nizamatdin, Khikmatullaev Sanjar, Ergashev Muxammadyusuf   +4 more
doaj   +1 more source

Refining Altimeter-Derived Gravity Anomaly Model from Shipborne Gravity by Multi-Layer Perceptron Neural Network: A Case in the South China Sea

Remote Sensing, 2021
Shipborne gravity can be used to refine altimeter-derived gravity whose accuracy is low in shallow waters and areas with complex submarine topography. As altimeter-derived gravity only within a small radius around the shipborne data can be corrected by ...
Chengcheng Zhu, Jinyun Guo, Jiajia Yuan, Xin Jin, Jinyao Gao, Chengming Li   +5 more
doaj   +1 more source

Relationship between gravity change and Yangbi MS6.4 earthquake

Geodesy and Geodynamics, 2023
Based on the relative and absolute gravity measurements in the southern South-North Seismic Belt since 2015, we analyzed the dynamic change of the regional gravity field and its relationship with the Yangbi MS6.4 earthquake that occurred on May 21, 2021.
Xiong Yang, Yiqing Zhu, Yunfeng Zhao, Shouchun Wei   +3 more
doaj   +1 more source

Along-Track Geopotential Difference and Deflection of the Vertical from GRACE Range Rate: Use of GEOGRACE

Terrestrial, Atmospheric and Oceanic Sciences, 2016
We present a theory and numerical algorithm to directly determine the time-varying along-track geopotential difference and deflection of the vertical at the Gravity Recovery and Climate Experiment (GRACE) satellite altitude.
GRACE, Geopotential difference, K-band ranging, Mass anomaly, Regional gravity solution   +4 more
doaj   +1 more source

A Gravity Dual of the Chiral Anomaly [PDF]

, 2002
We study effects associated with the chiral anomaly for a cascading $SU(N+M)\times SU(N)$ gauge theory using gauge/gravity duality. In the gravity dual the anomaly is a classical feature of the supergravity solution, and the breaking of the U(1) R ...
A. Ceresole, A. Ceresole, A. Loewy, E. Witten, Edward Witten, H.J. Kim, I.R. Klebanov, I.R. Klebanov, I.R. Klebanov, I.R. Klebanov, Igor R. Klebanov, J. Maldacena, J. Maldacena, J. Polchinski, Jaume Gomis, M. Bertolini, M. Bertolini, M. Bianchi, M. Henningson, O. Aharony, Peter Ouyang, R. Minasian, S.S. Gubser, S.S. Gubser   +23 more
core   +2 more sources