Estimates of the statistical characteristics of solar flares of cosmic radiation in the 20th and 21st cycles of solar activity

Frolov, S.G.

Kosmicheskaia Biologiia i Aviakosmicheskaia Meditsina 17(3): 18-23

1983


ISSN/ISBN: 0321-5040
PMID: 6308338
Accession: 005386063

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Abstract
This paper presents the principal characteristics of solar cosmic radiation events in the 20th and 21st cycles of solar activity. A uniform row of data concerning solar cosmic radiation has been obtained. An analysis of large-scale variations of the proton intensity time profile has demonstrated that the variations are associated with the structure of the interplanetary magnetic field which depends on interplanetary shock waves. The relative "proton" geoeffectiveness of the Sun southern hemisphere is significantly lower than of the northern hemisphere in both the 20th and the 21st cycles. Empirical distributions of standard characteristics of the SCR proton intensity profile and regression relations have been derived. They can be used to predict radiation parameters of SCR events.