Solar cycles in the ancient past.

Details Solar cycles in the ancient past. Solar cycles in the ancient past.

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990bsold...2...79c&link_type=abstract

Byulletin Solnechnye Dannye Akademie Nauk USSR, No. 2/90, p. 79 - 84

Mathematics

Logic

Solar Activity Cycles, Solar Activity Cycles: Variations

Scientific paper

The following possible time variations of solar cycle duration T on the basis of geological data (varves) were established: (1) the general diminution of T¯ from 23.4 to 11 years manifests a progressive evolutionary enhancement of the solar activity and moreover, (2) T¯ variation with a nearly 300-million year period, there were 12-year cycles in the Great Ice epochs of the Earth and 10-year cycles - in the interglacial epochs.

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