Results 51 to 60 of about 1,787 (204)
Preface to the Special Issue of Initial Scientific Results of MSS-1
Earth and Planetary PhysicsThe scientific research of geomagnetism has been largely driven by new geomagnetic data that are available to scientists. Macau Science Satellite-1 (MSS-1) was successfully launched on 21st May 2023 into a near-circular orbit of altitude of about 450 km ...
Keke Zhang, PengFei Liu, YongXin Pan
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Magnetohydrodynamics, 2012 We consider how information on geostrophic flows in the planetary cores, taken from 3D simulations in the sphere, can be used in 2D Parker's geodynamo model with the simple forms of the $α$-quenching. Using cluster computer systems dependence of dynamo equations solution on the magnitudes of $α$- and $ω$-effects is studied.
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Convection–driven geodynamo models [PDF]
Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2000 Summary: There has been significant progress in the development of numerical geodynamo models over the last five years. Advances in computer technology have made it possible to perform three-dimensional simulations, with thermal or compositional convection as the driving mechanism.
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Paleosecular Variation Constraints on Geomagnetic Field Morphology at ca. 1100 Ma
Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract Paleosecular variation provides a statistical test of long‐term geomagnetic field morphology, but its behavior across Precambrian polarity regimes remains poorly constrained. We compile a virtual geomagnetic pole dispersion data set spanning 1130–1070 Ma and apply nonlinear Model G fitting to evaluate field structure across the interval ...
Hanqing Zhao +7 more
wiley +1 more source
Kinematic-gravity model of geodynamo
Геофизический журнал, 2013 Based on the results of solving the inverse problem of magnetometry and analysis of some known models of the Earth magnetic field generation a model is proposed in which the current producing magnetic field is the vortex motion of positively charged ...
V.A. Kochnev
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Viscous and Magnetic Boundary Layers at the Top of the Core in Geodynamo Models
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 7, July 2026.Abstract We investigate the boundary layer at the top of the Earth's core, which acts as a filter between the interior of the core and its surface, where models built from geomagnetic data are derived. We rely on no‐slip convective geodynamo numerical simulations calculated for a low viscosity fluid, with Ekman numbers E=10−6 $E=1{0}^{-6}$ and E=10−7 ...
D. Jault +4 more
wiley +1 more source
Modelling the palaeo-evolution of the geodynamo [PDF]
, 2009 International audienceAlthough it is known that the geodynamo has been operating for at least 3.2 Ga, it remains difficult to infer the intensity, dipolarity and stability (occurrence of reversals) of the Precam-brian magnetic field of the Earth.
Poitou, Charles +5 more
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A Hierarchical Bayesian Model for the Global Holocene Geomagnetic Field
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.Abstract We present a hierarchical Bayesian model of the global geomagnetic field for the last 8,000 years. The model is built solely with thermoremanent records, which include archeomagnetic and volcanic data. Building upon previous work, this model includes fewer approximations and treats model hyperparameters as probabilistic variables.
M. A. Schanner, S. Panovska, M. Korte
wiley +1 more source
The non-negligible effect of viscosity diffusion on the geodynamo process
, 2021 The data are used in the article "The non-negligible effect of viscosity diffusion on the geodynamo process"
DongChao
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Stochastic model of 6-jet kinematic dynamo [PDF]
E3S Web of Conferences, 2019 The low-moded stochastic model of kinematic geodynamo is studied. The model is based on the indirect data about the large-scale structure of convection.
Vodinchar Gleb, Feshchenko Liubov
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