AbstractThe long-term variations in solar activity are studied using the dataset comprised of sunspot number and radioisotope timeseries. We use a novel index to identify possible past Grand Minima (GM). The Maunder, Oort, Wolf and Spörer Minima fall in phase with the minimum of index. We also show GM develop in clusters, with a separation of about 400–600years between individual GM. Extending these found similarities to modern solar activity, it is predicted that next grand solar minimum may occur in about .
On the timing of the next great solar activity minimum
Advances in Space Research ; 60 , 5 ; 1108-1114
2017-05-09
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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