Results 111 to 120 of about 4,233 (235)

A Study of Stochastic Resonance in the Periodically Forced Rikitake Dynamo

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2007
The geodynamo has widely been thought to be an intuitive and selfsustained model of the Earth¡¦s magnetic field. In this paper, we elucidate how a periodic signal could be embedded in the geomagnetic filed via the mechanism of stochastic resonance in a ...
Chien-Chih Chen Chih-Yuan Tseng
doaj   +1 more source

Transport properties of iron at the Earth's core conditions: the effect of spin disorder

open access: yes, 2017
The electronic and thermal transport properties of the Earth's core are crucial for many geophysical models such as the geodynamo model of the Earth's magnetic field and of its reversals.
Drchal, V.   +4 more
core   +1 more source

An alternate representation of the geomagnetic core field obtained using machine learning

open access: yesEarth, Planets and Space
Machine learning (ML) as a tool is rapidly emerging in various branches of contemporary geophysical research. To date, however, rarely has it been applied specifically for the study of Earth’s internal magnetic field and the geodynamo. Prevailing methods
Lukács Kuslits   +8 more
doaj   +1 more source

High-Order Compact Implicit Difference Methods For Parabolic Equations in Geodynamo Simulation

open access: yesAdvances in Mathematical Physics, 2009
A series of compact implicit schemes of fourth and sixth orders are developed for solving differential equations involved in geodynamics simulations. Three illustrative examples are described to demonstrate that high-order convergence rates are achieved ...
Don Liu, Weijia Kuang, Andrew Tangborn
doaj   +1 more source

High thermal conductivity of the Earth's core and geodynamo

open access: yesVestnik MGTU
The geomagnetic field is generated by dynamo processes in the Earth's core. This process is supported by the cooling of the planet and the growth of the solid core. It is known that the magnetic field existed long before the appearance of the solid core,
Reshetnyak M. Yu.
doaj   +1 more source

Geodynamos of Super-Earths

open access: yes
Constraining the heat flow out of a planetary core over geological time remains a significant challenge, as the extreme pressures and temperatures involved push the limits of experimental capabilities. However, this heat flow is crucial for understanding planetary processes that are often linked to habitability in planetary sciences. A geodynamo driven
Louis Müller   +2 more
openaire   +2 more sources

Experimental dynamos: from models to applications to the geodynamo

open access: yesComptes Rendus. Physique
Larmor 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
doaj   +1 more source

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