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The Main Component Analysis of the Longitudinal Distribution of Solar Activity

Published online by Cambridge University Press:  12 April 2016

Ladislav Hejna  and
Hubertus Wöhl
Ladislav Hejna
Affiliation:
Dept. of Computer Technique, Charles University, Prague, Czechoslovakia
Hubertus Wöhl
Affiliation:
Kiepenheuer-Institut für Sonnenphysik, Freiburg, FRG

Abstract

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In this contribution, preliminary results of the main component analysis of Bartels diagram of time series of daily values of sunspot group numbers for solar cycles 18, 19 and 20 are presented. The results obtained suggest that the most significant feature in the longitudinal distribution of sunspot activity is the existence of preferred solar hemispheres alternating with a mean period of 2.5 Bartels rotations.

Type
Part III Solar magnetism and large-scale flows
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 275 - 276
Copyright
Copyright © Springer-Verlag 1991

References

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