Schwabe Solar Cycle in Tree-Ring Sequences from the Last 4000 Years (Southern Poland)

• Autorzy: Krawczyk A. , Krąpiec M.
• Języki publikacji: EN

Abstrakty

EN

This paper presents results of investigations on possibilities of finding periodicity related to solar activity changes in annual growth sequences of trees. The research materials were six chronologies based on subfossil oak trunks (so-called black oaks) coming from alluvial deposits of the Vistula river in the vicinities of Cracow. The analyzed chronologies cover the period of the last 4000 years. Treatment of these data with the methods of spectral analysis of time series permitted to conclude that they all contained distinct cyclic components, of which periods could correspond to the periods of cyclic changes of solar activity. The results obtained confirm the earlier presented thesis that in the analyzed period of time the length of the basic, so-called 11-year (Schwabe) solar cycle declined to below 10 years.

Słowa kluczowe

EN

dendrochronology; solar cycles; time series

• Wydawca: Centrum Upowszechniania Nauki PAN
• Czasopismo: Bulletin of the Polish Academy of Sciences. Earth Sciences
• Rocznik: 2003
• Tom: Vol. 51, nr 2
• Strony: 91--98
• Opis fizyczny: Bibliogr. 23 poz.

Twórcy

autor

Krawczyk A.

autor

Krąpiec M.

• Department of General and Mathematical Geology, Faculty of Geology, Geophysics and Environmental Protection, University of Science and Technology, Kraków, Poland