Kinetic energy cascades in quasi-geostrophic convection in a spherical shell

0379737 - GFÚ 2013 RIV GB eng J - Journal Article
Reshetnyak, M. - Hejda, Pavel
Kinetic energy cascades in quasi-geostrophic convection in a spherical shell.
Physica Scripta. Roč. 86, č. 1 (2012), 018408/1-018408/5. ISSN 0031-8949. E-ISSN 1402-4896
Institutional research plan: CEZ:AV0Z30120515
Keywords : magnetohydrodynamic turbulence * magnetic fields * dynamos
Subject RIV: DE - Earth Magnetism, Geodesy, Geography
Impact factor: 1.032, year: 2012

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.
Permanent Link: http://hdl.handle.net/11104/0210622