Hemispherical dynamos generated by convection in rotating spherical shells

Details Hemispherical dynamos generated by convection in rotating spherical shells Hemispherical dynamos generated by convection in rotating spherical shells

Sep 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000phrve..62.4457g&link_type=abstract

Physical Review E (Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics), Volume 62, Issue 3, September 20

Physics

19

Origins And Models Of The Magnetic Field, Dynamo Theories, Interplanetary Magnetic Fields

Scientific paper

At Taylor numbers of the order 108 and Prandtl numbers of the order 1, dynamos generated by convection are found for which the magnetic field is essentially confined to either the northern or the southern hemisphere of a rotating spherical shell. The time dependence is typically chaotic, but latitudinal waves can be discerned that cause the magnetic field to change its polarity in a cyclical fashion. A possible relationship to a solar phenomenon is pointed out.

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