Record details

Title
    Kinetic energy cascades in quasi-geostrophic convection in a spherical shell
Author
    Hejda, Pavel
    Reshetnyak, M.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Physica Scripta
Vol./nr.
    Roč. 86, č. 1
Year
    2012
Notes
    Rozsah: 5 s. : P
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    dynamos
    magnetic fields
    magnetohydrodynamic turbulence
Keyword
    Cascades
    Convection
    Energy
    Kinetic
    Quasi-geostrophic
    Shell
    Spherical
Abstract (in english)
   We consider triadic nonlinear interaction in the Navier-Stokes equation for quasi-geostrophic convection in a spherical shell. This approach helps us understand the origin of kinetic energy transport in the system and the particular scheme of mode interaction, as well as the locality of energy transfer. The peculiarity of convection in the sphere, concerned with the excitation of Rossby waves, is considered. The obtained results are compared with the results of our previous study on Cartesian geometry.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013