Results 11 to 20 of about 4,233 (235)
A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition
Geophysical Research LettersThe long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior.
Fuyun Shen +6 more
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Journal of Geography (Chigaku Zasshi), 2005 Recent progress of numerical simulations on the dynamo process in the core and the mantle convection provides a clue to understanding the origin of global variations of the Earth system during the last 150 Ma, in which long-term variations of geomagnetic reversal frequency and mantle activity are closely related in time.
Yozo HAMANO +2 more
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BASIC SYSTEMS FOR THE GEOMAGNETIC FIELD [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2010 The system of own solenoidal fields of operator Laplace which can be used for decomposition of a geomagnetic field in a kernel of the Earth is described.
Vodinchar G.M., Kruteva L.K.
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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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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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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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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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The effect of model errors in ensemble sequential assimilation of geomagnetic field
Earth and Planetary Physics, 2023 Earth’s magnetic field is generated in the fluid outer core through the dynamo process. Over the last decade, data assimilation has been used to retrieve the core dynamics and predict the evolution of the geomagnetic field.
JinFeng Li, YuFeng Lin, KeKe Zhang
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NUMERICAL SIMULATION IN LOW MODED GEODYNAMOMODEL APPLYING THE PACKAGES OF HIGH PRECISION CALCULATION [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2011 The means of high precision calculation are considered, their comparative analysis isfulfilled, application of the most efficient of them for the geodynamo task is regardered.
A.S. Chemarev +2 more
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