Remarks on
astrochronology and time series analysis of
*University
of the
**
Abstract: A 4190-yr varve record from lake Saki (Crimea)
was recently re-analyzed using five different spectral methods, applied both
overall and to separate segments of the record (Xanthakis et al., 1995a). Here
we consider its palaeoclimatic implications, spanning much of the Holocene
Subboreal and Subatlantic biozones, and compare the spectra with those of
planetary-solar orbital and radiation periodicities. Linkage is found with both
the data on harmonics of the Earth-Moon Milankovitch parameters, and with
harmonics and resonances of (a) the major planets, (b) the proxy solar activity
record disclosed by 14C flux in the Stuiver and Braziunas
dendroscronological record, and (c) the long-term observations of geomagnetics
and auroras. The most significant (>95%) of the Xanthakis et al data are in
the ranges 20-25, 44-46, 57-67, 120-130 and 200-250 yr (Liritzis and Fairbridge,
1998). All of these clusters are strongly represented in the spectra of both
palaeoclimatic and astronomic frequency series.