Subharmonic resonance of global climate to solar forcing

Bershadskii, A.

doi:10.48550/arxiv.1002.1024

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Subharmonic Resonance1

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2010

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References 18 publications

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“…Ref. [16]) let us imagine a forced excitable system with a large amount of loosely coupled degrees of freedom schematically represented by Duffing oscillators (which has become a classic model for analysis of nonlinear phenomena and can exhibit both deterministic and chaotic behavior [17]- [20] depending on the parameters range) with a wide range of the natural frequencies ω 0 : ẍ +…”

Section: Subharmonic Resonancementioning

confidence: 99%

Nonlinear and chaotic ice ages: data vs speculations

Bershadskii

2010

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It is shown that, the wavelet regression detrended fluctuations of the reconstructed temperature for the past 400,000 years (Antarctic ice cores data) are completely dominated by one-third subharmonic resonance, presumably related to Earth precession effect on the energy that the intertropical regions receive from the Sun. Effects of Galactic turbulence on the temperature fluctuations are also discussed. Direct evidence of chaotic response of the atmospheric CO2 dynamics to obliquity periodic forcing has been found in a reconstruction of atmospheric CO2 data (deep sea proxies), for the past 650,000 years.

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Section: Subharmonic Resonancementioning

confidence: 99%