Results 11 to 20 of about 1,386 (209)
Mathematics, 2023 Spectral models are often used in the study of geodynamo problems. Physical fields in these models are presented as stationary basic modes combinations with time-dependent amplitudes. To construct a model it is necessary to calculate the modes parameters,
Gleb Vodinchar, Liubov Feshchenko
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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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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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Regular reversals in the six-jet geodynamo model
E3S Web of Conferences, 2018 A low-mode geodynamo model is developed, controlled by 6-jet convection in the core of the Earth. The model contains only four modes, representing the fields of temperature, velocity, and two fields of magnetic induction. The magnetic modes was chosen by
Feshchenko Liubov
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Experimental dynamos: from models to applications to the geodynamo [PDF]
Comptes Rendus. PhysiqueLarmor proposed in 1919 an explanation for the origin of the Sun’s magnetic field. This phenomenon, known as the dynamo effect, is considered to be responsible for most of the magnetic fields of astrophysical objects, including that of the Earth. It took
Pétrélis, François
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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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Dynamic mode decomposition of the geomagnetic field over the last two decades
Earth and Planetary Physics, 2023 Earth's magnetic field, which is generated in the liquid outer core through the dynamo action, undergoes changes on timescales of a few years to several million years, yet the underlying mechanisms responsible for the field variations remain to be ...
JuYuan Xu, YuFeng Lin
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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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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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