Abstract Data on strong solar proton events, including: (a) instrumental record of ground level enhancements (1954–1996), (b) proxy record derived from nitrate series (1700–1944) and (c) proxy record derived from 10Be series (1755–1927) were analyzed. It was shown that strong solar proton events are more frequent during even-numbered solar cycles than during odd-numbered ones with a probability of more than 0.93. The results provide new evidence for the fundamental character of the Gnevyshev–Ohl rule. Possible causes of the revealed even–odd effect are discussed.
Gnevyshev–Ohl rule for strong solar proton events
Advances in Space Research ; 57 , 5 ; 1280-1283
2015-10-11
4 pages
Article (Journal)
Electronic Resource
English
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