Počet záznamů: 1

Hydromagnetic dynamos in rotating spherical fluid shells in dependence on the Prandtl number and stratification

  1. 1.
    0363808 - GFU-E 2012 RIV GB eng J - Článek v odborném periodiku
    Šimkanin, Ján - Hejda, Pavel
    Hydromagnetic dynamos in rotating spherical fluid shells in dependence on the Prandtl number and stratification.
    Geophysical Journal International. Roč. 185, č. 2 (2011), s. 637-646 ISSN 0956-540X
    Grant CEP: GA AV ČR IAA300120704; GA MŠk LA09015
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: dynamo * theories and simulations * composition of the core * planetary interiors
    Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
    Impakt faktor: 2.420, rok: 2011

    his paper investigates the dependence of hydromagnetic dynamos on the thermal and viscous diffusion processes and stratification. We analyse cases when thermal and viscous diffusion processes equally affect the dynamo action and when thermal diffusion processes dominate over viscous ones. The spherical shell is considered to be stratified either uniformly or non-uniformly. In the case of non-uniform stratification, the upper thin subshell is stably stratified and the lower subshell is unstably stratified, while for uniform stratification the whole shell is unstably stratified. In all the investigated cases, the generated magnetic field is dipolar.
    Trvalý link: http://hdl.handle.net/11104/0199465