Results 21 to 30 of about 108,603 (294)

Joint inversion estimate of regional glacial isostatic adjustment in Antarctica considering a lateral varying Earth structure (ESA STSE Project REGINA) [PDF]

open access: yes, 2017
A major uncertainty in determining the mass balance of the Antarctic ice sheet from measurements of satellite gravimetry, and to a lesser extent satellite altimetry, is the poorly known correction for the ongoing deformation of the solid Earth caused by
Bamber, Jonathan L.   +11 more
core   +3 more sources

Effective Theory of Dark Energy at Redshift Survey Scales [PDF]

open access: yes, 2015
We explore the phenomenological consequences of general late-time modifications of gravity in the quasi-static approximation, in the case where cold dark matter is non-minimally coupled to the gravitational sector.
Gleyzes, Jérôme   +3 more
core   +3 more sources

Field source characteristic of gravity variation in Hexi region before Menyuan Ms6.4 earthquake based on the Euler deconvolution

open access: yesGeodesy and Geodynamics, 2016
This study adopted the Euler deconvolution method to conduct an inversion and interpretation of the depth and spatial distribution pattern of field source that lead to gravity variation. For this purpose, mobile gravity data from four periods in the Hexi
Fang Liu, Yingwei Wang, Weifeng Liang
doaj   +1 more source

Improved Gravity Inversion Method Based on Deep Learning with Physical Constraint and Its Application to the Airborne Gravity Data in East Antarctica

open access: yesRemote Sensing, 2023
This paper aims to solve the limitations of traditional gravity physical property inversion methods such as insufficient depth resolution and difficulties in parameter selection, by proposing an improved 3D gravity inversion method based on deep learning.
Guochao Wu   +6 more
doaj   +1 more source

Temperature inversion in granular fluids under gravity

open access: yes, 2002
We study, via hydrodynamic equations, the granular temperature profile of a granular fluid under gravity and subjected to energy injection from a base. It is found that there exists a turn-up in the granular temperature and that, far from the base, it ...
Ramirez, Rosa, Soto, Rodrigo
core   +3 more sources

Advances in techniques and applications of joint estimation by receiver function and gravity data

open access: yes地球与行星物理论评, 2022
The joint inversion of receiver function and gravity data estimates the crustal thickness and VP/VS ratio. Since Lowry and Pérez-Gussinyé proposed it in 2011, this joint inversion method has been improved and refined by domestic and international ...
Hanhan Tang, Lianghui Guo
doaj   +1 more source

Joint inversion of muon tomography and gravimetry - a resolving kernel approach [PDF]

open access: yes, 2014
Both muon tomography and gravimetry are geophysical methods that provide information on the density structure of the Earth's subsurface. Muon tomography measures the natural flux of cosmic muons and its attenuation produced by the screening effect of the
Gibert, Dominique   +2 more
core   +7 more sources

Deep Learning-Based Gravity Inversion Integrating Physical Equations and Multiple Constraints

open access: yesApplied Sciences
Three-dimensional gravity inversion technology involves inferring the underground density structure based on observed gravity anomaly data. In addition to gravity inversion based on physics-driven methods, deep learning, as a purely data-driven technique,
Wenxuan Shi   +6 more
doaj   +1 more source

Application of the $\chi^2$ principle and unbiased predictive risk estimator for determining the regularization parameter in 3D focusing gravity inversion

open access: yes, 2014
The $\chi^2$ principle and the unbiased predictive risk estimator are used to determine optimal regularization parameters in the context of 3D focusing gravity inversion with the minimum support stabilizer. At each iteration of the focusing inversion the
Ardestani, Vahid E.   +2 more
core   +1 more source

Inversion of stellar fundamental parameters from Espadons and Narval high-resolution spectra

open access: yes, 2014
The general context of this study is the inversion of stellar fundamental parameters from high-resolution Echelle spectra. We aim indeed at developing a fast and reliable tool for the post-processing of spectra produced by Espadons and Narval ...
Böhm, T.   +3 more
core   +3 more sources

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