Počet záznamů: 1

Nonlinearity in a dynamo

  1. 1.
    0355538 - GFU-E 2011 RIV GB eng J - Článek v odborném periodiku
    Hejda, Pavel - Reshetnyak, M.
    Nonlinearity in a dynamo.
    Geophysical and Astrophysical Fluid Dynamics. Roč. 104, č. 5-6 (2010), s. 491-504 ISSN 0309-1929
    Grant CEP: GA AV ČR IAA300120704
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: Boussinesq convection * geostrophy * quenching * triads
    Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
    Impakt faktor: 0.831, rok: 2010

    Using a rotating flat layer heated from below as an example, we consider effects which lead to stabilizing an exponentially growing magnetic field in magnetostrophic convection in transition from the kinematic dynamo to the full non-linear dynamo. We present estimates of the energy redistribution over the spectrum and helicity quenching by the magnetic field. We also study the alignment of the velocity and magnetic fields. These regimes are similar to those in planetary dynamo simulations.
    Trvalý link: http://hdl.handle.net/11104/0194286