New results concerning the global solar cycle

Details New results concerning the global solar cycle New results concerning the global solar cycle

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989soph..123..367m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 123, no. 2, 1989, p. 367-380.

Physics

75

Solar Activity, Solar Cycles, Solar Magnetic Field, Solar Prominences, H Alpha Line, Magnetic Field Configurations, Polarity, Shear Stress, Sunspot Cycle, Synoptic Measurement

Scientific paper

The poleward migration-trajectory diagram of filament bands is derived for the years 1915-1982 from the H-alpha synoptic charts. The global solar activity commences soon after the polar-field reversal in the form of two components in each hemisphere. The first component is identified with the polar faculae that appear at latitudes 40-70 deg and migrate polewards. The second and the more powerful component representing the sunspots shows up at 40 deg latitudes 5-6 years later and drifts equatorward, giving rise to a butterfly diagram. Thus the global solar activity is described by the faculae and the sunspots that occur at different latitude belts and displaced in time by 5-6 years.

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