On the 36-year cycle in solar activity
M. G. Ogurtsov1,2
1Ioffe Institute, St. Petersburg, Russia
2Central Astronomical Observatory at Pulkovo, St. Petersburg, Russia.
Email: maxim.ogurtsov@mail.ioffe.ru
A series of data on the flux of cosmogenic 10Be in an ice core recovered from Fuji Dome Station (East Antarctica) covering the period 700-1876 was analyzed. Fourier analysis and wavelet analysis showed the presence of cyclicity in this series with a period of about 36 years. Since flux of 10B contains information about variations in cosmic radiation entering the Earth's atmosphere, mainly associated with changes in solar activity, the identified periodicity may be the result of the corresponding solar cycle. The possible climatic origin of the 36-year variation is also discussed. Keywords: solar activity, solar paleoastrophysics, climate.
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