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Search for solar periodicities in Miocene tree ring widths
Author(s) -
Kurths J.,
Spiering Ch.,
MüllerStoll W.,
Striegler U.
Publication year - 1993
Publication title -
terra nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.353
H-Index - 89
eISSN - 1365-3121
pISSN - 0954-4879
DOI - 10.1111/j.1365-3121.1993.tb00269.x
Subject(s) - period (music) , geology , prehistory , paleontology , physics , acoustics
We have analysed ring‐width records of two Miocene coniferous trees with an absolute age of 15–20 million years. Such data may reflect solar periodicities from the prehistoric past. Evidence for a main period of ∼ 12.5 years has been found. This is near the present basic solar activity period of ∼ 11 years. Other periodic components appear at 220, 150 and 53 years, respectively, which may also be related to solar variations.