Hemispherical dynamos generated by convection in rotating spherical shells

Authors
Grote, E Busse, FH
Citation
E. Grote et Fh. Busse, Hemispherical dynamos generated by convection in rotating spherical shells, PHYS REV E, 62(3), 2000, pp. 4457-4460
Citations number
6
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW E
ISSN journal
1063651X → ACNP
Volume
62
Issue
3
Year of publication
2000
Part
B
Pages
4457 - 4460
Database
ISI
SICI code
1063-651X(200009)62:3<4457:HDGBCI>2.0.ZU;2-6
Abstract
At Taylor numbers of the order 10(8) and Prandtl numbers of the order 1, dy namos generated by convection are found for which the magnetic field is ess entially confined to either the northern or the southern hemisphere of a ro tating spherical shell. The time dependence is typically chaotic, but latit udinal waves can be discerned that cause the magnetic field to change its p olarity in a cyclical fashion. A possible relationship to a solar phenomeno n is pointed out.