Abstract Analysis of the general statistical features of the sunspot cycles in the period 1700–1996 AD, including the Gnevyshev–Ohl rule, Waldmeier rule and an amplitude–period effect, was performed for both Wolf numbers and group sunspot numbers. It was shown that for both solar indices all the statistical effects are weaker over the time interval 1700–1855 AD than over the time interval 1856–1996 AD. Possible causes of this difference are discussed.


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    Title :

    Temporal evolution of statistical features of the sunspot cycles


    Contributors:

    Published in:

    Advances in Space Research ; 50 , 6 ; 669-675


    Publication date :

    2011-03-29


    Size :

    7 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English








    Estimating Sunspot Number

    R. M. Wilson / E. J. Reichmann / D. L. Teuber | NTIS | 1984