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Investigation into variations of climate, the evolution of
the biosphere, the structures and composition of the lithosphere raise
problems of seeking the source of cyclical processes. The Earth is an
open resonance system in which forced, intrinsic and auto-oscillatory
processes synchronize and have a complex genesis. Isolation of the
constituent processes and determination of the cause-effect relations
are extremely difficult. Future climates depend not only on increases in
greenhouse gas concentrations (internal components) and earth orbital
changes (external ones), but also depend heavily on changes in global
ocean circulation and sea surface temperature (both components). The
current moment of time is tied to geological multi-million year cycles,
climatic thousand-year and intrasecular rhythms. The principal
geological periods from 19 to 37Ma correspond to the events during which
the solar system crossed the spiral galactic streams of matter. The
boundary of the Quaternary (1.5Ma BP) was forming during the last
intersection of the arm of Orion-Cygnus with the solar system
(2.7-0.7Ma). There is a stable cooling trend and Matuyama reversed epoch
at that time. Oscillations with periods (TJ = 0.075* 2J/16y) under 2 Ma
have been formed inside the solar system. The structure of rhythms with
16 periods into an octave has determined cosmic, solar, and terrestrial
processes. The laws of conservation of momenta create spectra: AJ =
SI* TJ 1/2 , where AJ - amplitudes,
SI - constants for series of cycles. These
regularities, which are very convenient to classify cycles and land
forms, permit estimation of time of formation of geomorphic objects. The
reconstructions for the last glacial period, approximation and
extrapolation of the last homogeneous part of the row allow enhancement
of the interpretation of the isotope series.
References:
Berry, B. L. 1992. Basic
systems of geospheric - biospheric cycles and the prediction of natural
conditions. Biophysics, Vol.37, N3, 414-428, (in Russian), Pergamon
Press Ltd. Printed in Great Britain, 1993, 328-341 (in English).
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