Supergiant Complexes of Solar Activity and Convection Zone

Details Supergiant Complexes of Solar Activity and Convection Zone Supergiant Complexes of Solar Activity and Convection Zone

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011soph..270....1a&link_type=abstract

Solar Physics, Volume 270, Issue 1, pp.1-8

Physics

Active Regions, Convection Zone, Turbulence

Scientific paper

The global distribution of solar surface activity (active regions) is apparently connected with processes in the convection zone. The large-scale magnetic structures above the tachocline could in a pronounced way be observable in the surface magnetic field. To get the information regarding large-scale magnetic formations in the convection zone, a set of solar synoptic charts (Mount Wilson 1998 - 2004, Fe i, 525.02 nm) have been analyzed. It is shown that the longitudinal dimensions and dynamics of supergiant complexes of solar surface activity carry valuable information about the processes in the convection zone of the Sun. A clear effect of large-scale (global) turbulence is found. This is a `fingerprint' of deep convection, because there are no such large-scale turbulent eddies in the solar photosphere. The preferred scales of longitudinal variations in surface solar activity are revealed. These are: ˜ 24° (gigantic convection cells), 90°, 180° and 360°.

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