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Hydromagnetic dynamos in rotating non-uniformly stratified spherical fluid shells in dependence on the Rayleigh number
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SYSNO ASEP 0363811 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Hydromagnetic dynamos in rotating non-uniformly stratified spherical fluid shells in dependence on the Rayleigh number Author(s) Šimkanin, Ján (GFU-E) ORCID, RID
Hejda, Pavel (GFU-E) ORCID, RID
Saxonbergová, Dana (UFA-U) RID, ORCIDSource Title Physics of the Earth and Planetary Interiors. - : Elsevier - ISSN 0031-9201
Roč. 185, č. 3-4 (2011), s. 100-106Number of pages 7 s. Language eng - English Country NL - Netherlands Keywords hydromagnetic dynamo ; non-uniform stratification ; penetrative convection ; Rayleigh number Subject RIV DE - Earth Magnetism, Geodesy, Geography R&D Projects IAA300120704 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z30120515 - GFU-E (2005-2011) AV0Z30420517 - UFA-U, BC-A (2005-2011) UT WOS 000289926000005 DOI 10.1016/j.pepi.2011.02.002 Annotation We present an investigation of dynamo in non-uniformly stratified spherical shells dependent on the Rayleigh number and thickness of a stable stratified sub-shell with emphasis on the case characterized by the identical thicknesses of both sub-shells. Our previous study of rotating convection showed that this case of stratification is a typical extreme case. However, the dynamo action in the shell characterized by the identical thicknesses of both sub-shells is not the typical extreme case. The generated magnetic field is close to the cases of uniform stratification and non-uniform one if the thickness of a stable stratified sub-shell is smaller than the thickness of an unstable stratified sub-shell. Workplace Geophysical Institute Contact Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Year of Publishing 2012
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