Polarity reversals in dependence on the Prandtl number and density stratification

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F15%3A00440702" target="_blank" >RIV/67985530:_____/15:00440702 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s11200-014-0724-6" target="_blank" >http://dx.doi.org/10.1007/s11200-014-0724-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11200-014-0724-6" target="_blank" >10.1007/s11200-014-0724-6</a>

Result language

angličtina

Original language name

Polarity reversals in dependence on the Prandtl number and density stratification

Original language description

Dependence of polarity reversals on the Prandtl number and density stratification using the MAG dynamo code was investigated. The magnetic field is dipole-dominated in the stable polarity state and during the reversals it is multipolar. Quadrupole and octupole components of magnetic fields are stronger at the Prandtl number equal to 0.2 than at the Prandtl number equal to 1. Polarity reversals occur at higher values of the Rayleigh number, while at its lower values the magnetic field does not undergo reversals. The situation is the same with the magnetic Prandtl number: polarity reversals occur at higher values of the magnetic Prandtl number, while at its lower values the magnetic field does not undergo reversals (neither if the magnetic field becomesweak in the polar regions nor if it is strong). During the 1000 simulated time units two reversals occur in the case of uniform stratification and at both investigated values of the Prandtl number, while in the case of non-uniform stratif

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DE - Earth magnetism, geodesy, geography

OECD FORD branch

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Project

<a href="/en/project/LG13042" target="_blank" >LG13042: Support of activities in management structures of International Association of Geomagnetism and Aeronomy (IAGA)</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Studia geophysica et geodaetica

ISSN

0039-3169

e-ISSN

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Volume of the periodical

59

Issue of the periodical within the volume

1

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

22

Pages from-to

137-158

UT code for WoS article

000349607000008

EID of the result in the Scopus database

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