On the seasonal distribution of sunspot frequency |
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Authors: | Reinhart Bartsch |
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Affiliation: | International Center for Interdisciplinary Cycle Research , Postfach 90 05 24, Frankfurt 90, D‐6000, Fed. Rep. of Germany |
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Abstract: | Abstract Using the Zürich sunspot data, the seasonal distribution of all sunspot‐groups and of all new‐formed groups from 1938 to the last solar minimum in 1976 was investigated. It is shown that there exist different distributions for the northern and southern solar hemisphere with maxima in the third and second quarter of the years, respectively, and seasonal differences in the north‐south asymmetry. These results confirm the presumption of an influence of interstellar matter on solar activity. |
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Keywords: | Sunspot frequency solar activity solar cycles solar asymmetries |
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