The large-scale build-up of solar magnetic cycles

Details The large-scale build-up of solar magnetic cycles The large-scale build-up of solar magnetic cycles

May 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994soph..151..371m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 151, no. 2, p. 371-384

Physics

7

Magnetic Fields, Multipolar Fields, Solar Cycles, Sunspots, Convection Cells, Magnetic Poles, Mixing Layers (Fluids), Solar Rotation, Spherical Harmonics

Scientific paper

The purpose of the present article is to analyze the solar cycles from the point of view of the large-scale surface magnetic field (LSMF) polarity distributions. Using synoptic charts of the LSMF for the 1870-1991 time interval at maxima and minima and the spherical harmonic analysis of the polarity distributions, a connection between magnetic cycles has been found. The 'weight' of the large-scale sectoral mode (m=1) in the common LSMF polarity distribution at minima of the sunspot cycle is the 'source' of sunspot activity at maxima after 16-18 years. The connections found suggest that surface LSMFs have a dual nature-the main source below the convective zone and a secondary source (sunspot production). The sunspot production has no visible influence on the LSMF cycles.

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