Results 11 to 20 of about 1,787 (204)
Geophysical Research Letters, 2019 In a metal, as in Earth's core, the thermal and electrical conductivities are assumed to be correlated. In a planetary dynamo this implies a contradiction: that both electrical conductivity, which makes it easier to induce current and magnetic field, and
Peter E. Driscoll, Zhixue Du
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The geodynamo for non-geophysicists [PDF]
European Journal of Physics, 2020 Abstract The geodynamo usually appears as a somewhat intimidating subject. Its understanding seems to require knowledge of the intricate theory of magnetohydrodynamics. The solution of the corresponding equations can only be achieved numerically. It seems to be a subject for the specialist.
Friedrich Herrmann, Tobias Vorbach
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Reversals in the six-jet Geodynamo model
E3S Web of Conferences, 2016 We describe a large-scale geodynamo model based on hypothesis about 6-cells convection in the Earth’s core. This hypothesis suggests indirect data of inhomogeneities in the density of the Earth?s core.
Vodinchar Gleb, Feshchenko Lyubov
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Magnetic Stability Analysis for the Geodynamo [PDF]
, 2004 Kinematic dynamo modelling addresses the growth of magnetic fields under the action of fluid flow, effected in the geophysical case by the action of the convecting electrically conducting outer core and magnetic diffusion. In this study, we prescribe the
Livermore, Philip
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Estimates of Quantities in a Hall Effect Geodynamo Theory [PDF]
Advances in Electrical and Electronic Engineering, 2008 Currents, resistances, dynamo constant, Hall voltage coefficient and inductances are estimated for the author’s geodynamo theory incorporating the Hall Effect.
Annraoi M de Paor
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ИНВЕРСИИ В ШЕСТИСТРУЙНОЙ МОДЕЛИ ГЕОДИНАМО [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2016 We describe a large-scale geodynamo model based on hypothesis about 6-jet convection in the Earth’s core. This hypothesis suggests indirect data of inhomogeneities in the density of the Earth’s core.
Vodinchar G. M. , Feshchenko L. K.
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Indicators of mantle control on the geodynamo from observations and simulations
Frontiers in Earth Science, 2022 There has been longstanding controversy about whether the influence of lateral variations in core-mantle boundary heat flow can be detected in paleomagnetic records of geomagnetic field behavior. Their signature is commonly sought in globally distributed
Monika Korte +3 more
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Fractal Properties of the Magnetic Polarity Scale in the Stochastic Hereditary αω-Dynamo Model
Fractal and Fractional, 2022 We study some fractal properties of the hereditary αω-dynamo model in the two-mode approximation. The phase variables of the model describe the temporal dynamics of the toroidal and poloidal components of the magnetic field.
Gleb Vodinchar , Lyubov Feshchenko
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Visualization of Geodynamo Simulations [PDF]
Proceedings of the XSEDE16 Conference on Diversity, Big Data, and Science at Scale, 2016 Earth's magnetic field undergoes striking variations in direction and strength on a vast spectrum of time scales. Complex motions of the liquid iron core maintain the magnetic field, but the inner workings of this so-called dynamo process are obscured from direct observation and pose significant challenges for theoretical and computational modeling ...
Amit Chourasia +6 more
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Contributions to Geophysics and Geodesy, 2017 Numerical simulations of the geodynamo are becoming more realistic because of advances in computer technology. Here, the geodynamo model is investigated numerically at the extremely low Ekman and magnetic Prandtl numbers using the PARODY dynamo code ...
Ján ŠIMKANIN, Juraj KYSELICA
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