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Sequences of Large Sunspot Groups

Published online by Cambridge University Press:  14 August 2015

P. Kotrč
P. Kotrč*
Affiliation:
Astronomical Institute of the Czechoslovak Academy of Sciences, Ondřejov, Czechoslovakia

Abstract

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The concept of a sequence of large sunspot groups is defined. From distribution functions of large groups from the period of sequences and that outside sequences it has been found that there are relatively more groups with a smaller maximum area in the period of sequences than in the period outside sequences. With an increased frequency of the occurrence of large sunspot groups on the solar disc their size decreases.

Type
Part 1: Basic Observed Parameters of the Solar Cycle
Information
Symposium - International Astronomical Union , Volume 71: Basic Mechanisms of Solar Activity , 1976 , pp. 199 - 202
Copyright
Copyright © Reidel 1976 

References

Greenwich Photoheliographic Results 1903–1964.Google Scholar
Kopecký, M. and Kotrč, P.: 1974, Bull. Astron. Inst. Czech. 25, 171.Google Scholar
Kopecký, M. and Kotrč, P.: 1976, Paper presented at the 7th Regional Consultation on Solar Physics, Sept. 1973, Starý Smokovec, (To be printed in Publ. Astron. Obs. Skalnaté Pleso ).Google Scholar