From Newsgroup: sci.anthropology.paleo
https://esd.copernicus.org/articles/16/1569/2025/
Abstract
The dominant period of the Late Pleistocene
glacialrCointerglacial cycles is roughly 100rCekyr,
rather than other major astronomical periods
such as 19, 23, 41, and 400rCekyr. Various models
explain this fact through distinct dynamical
mechanisms, including synchronization of
self-sustained oscillations and resonance in
mono- or multi-stable systems. However, the
diversity of proposed models and dynamical
mechanisms may obscure the essential factor
behind the emergence of the re+100rCekyr
periodicity. We propose the hypothesis that the
ice-sheet climate system responds to astronomical
forcing at the re+100rCekyr periodicity because the
intrinsic timescale of the system is closer to
100rCekyr than to other major astronomical periods.
We support this idea with analyses and
sensitivity studies of several simple ice age
models with contrasting mechanisms.
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