Geomagnetism and Aeronomy

, Volume 55, Issue 7, pp 902–906 | Cite as

The Gnevyshev-Ohl rule and its violations

  • N. V. Zolotova
  • D. I. Ponyavin


The 22-year cycle in the solar activity known as the even-odd effect is compared with the odd-even order. We find that the grouping into the even-odd pairs is not preferable in comparison to that of odd-even ones. We argue that due to existed relations between any adjacent cycles, combination of solar cycles in pairs according to their numbers is not justified.


Solar Cycle Sunspot Number Sunspot Cycle Group Sunspot Number Cycle Intensity 
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© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  1. 1.Saint-Petersburg State UniversitySaint-PetersburgRussia

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