Results 31 to 40 of about 1,787 (204)

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, G.M. Vodinchar, A.B. Tristanov   +2 more
doaj   +1 more source

On the Precession Driven Geodynamo [PDF]

Izvestiya, Physics of the Solid Earth, 2006
Formation of flow structures in the Earth’s liquid core enclosed in a precessing and rotating shell (mantle) is examined within the hydrodynamic approach. The kinematics and energetics of the motions in the Earth’s core initiated by precession allow one to regard these motions as a possible geodynamo mechanism at an early evolutionary stage of the ...
openaire   +1 more source

Magnetic reversal in a geodynamo simulation

, 2022
Rendering of a numerical simulation of the geodynamo. The tubes materialize the magnetic field lines, the white transparent sphere is the Earth, while the inner sphere is the core-mantle boundary showing the intensity of the magnetic field there.The ...
Nathanael Schaeffer (474534), Alexandre Fournier (5914298)   +1 more
core   +2 more sources

Stochastic Models of Geodynamo Simulations [PDF]

, 2022
The Earth's magnetic field originates primarily in the interior of the planet, and represents one of the few signals through which processes of the deep Earth are expressed at the surface.
Davis, William
core   +1 more source

Geomagnetic Dipole Changes and Upwelling/Downwelling at the Top of the Earth's Core

Frontiers in Earth Science, 2018
The convective state of the top of Earth's outer core is still under debate. Conflicting evidence from seismology and geomagnetism provides arguments for and against a thick stably stratified layer below the core-mantle boundary.
Ludovic Huguet, Ludovic Huguet, Hagay Amit, Thierry Alboussière   +3 more
doaj   +1 more source

Asymmetric Dipole Trends in Geodynamo Models and the Paleomagnetic Field

Geochemistry, Geophysics, Geosystems, 2023
Temporal trends in the paleomagnetic dipole moment exhibit the property of positive skewness. On average, positive trends are larger and occur less frequently than negative trends over timescales of several tens of kyr.
B. A. Buffett
doaj   +1 more source

Prandtl-number dependence of convection-driven dynamos in rotating spherical fluid shells [PDF]

, 2005
The value of the Prandtl number P exerts a strong influence on convection-driven dynamos in rotating spherical shells filled with electrically conducting fluids.
Simitev, R., Busse, F.H.
core   +1 more source

The Cretaceous Normal Superchron: A Mini-Review of Its Discovery, Short Reversal Events, Paleointensity, Paleosecular Variations, Paleoenvironment, Volcanism, and Mechanism

Frontiers in Earth Science, 2022
The Cretaceous Normal Superchron (CNS) was first defined in the 1960s to explain the Cretaceous Quiet Zone in marine magnetic anomaly profiles, which includes no or fewer geomagnetic reversals.
Yutaka Yoshimura
doaj   +1 more source

Комплекс программ моделирования геодинамо на основе спектральных эредитарных моделей

Vestnik KRAUNC: Fiziko-Matematičeskie Nauki
Исследование задачи геодинамо часто проводят на основе спектральных моделей, когда поля задачи полностью или частично раскладываются по собственным полям (модам) подходящих спектральных задач.
Водинчар, Г.М., Казаков, Е.А., Фещенко, Л.К.   +2 more
doaj   +1 more source

Quantifying the Effects of Nickel on Earth’s Inner‐Core Nucleation

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The formation of Earth’s solid inner core marks a major transition in the thermal and chemical evolution of the deep Earth, yet its origin remains paradoxical, as initial nucleation appears to require unrealistically large undercooling in the outer core.
Jiahui Zhai, Liangrui Wei, Chen Gao, Yang Sun   +3 more
wiley   +1 more source