A Study of Variation of the 11-yr Solar Cycle before the onset of the Spoerer Minimum based on Annually measured 14 C Content in tree Rings

Proxy-based observations of solar activity in the past have revealed long-term variations, such as the Gleissberg cycle (~88 yr), de Vries cycle (~200 yr), and the Hallstatt cycle (~2000 yr). Such long-term variations of solar activity sometimes cause the disappearance of sunspots for several decade...

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Veröffentlicht in:	Radiocarbon 2019-12, Vol.61 (6), p.1749-1754
Hauptverfasser:	Moriya, Toru, Miyahara, Hiroko, Ohyama, Motonari, Hakozaki, Masataka, Takeyama, Mirei, Sakurai, Hirohisa, Tokanai, Fuyuki
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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