Pseudo Resonance Induced Quasi-Periodic Behavior in Stochastic Threshold Dynamics
First published: 2011
Brief summary
Explains the ~100,000-year ice age cycle via stochastic resonance amplifying a weak eccentricity-driven insolation signal, alongside 20 kyr precession and 41 kyr obliquity cycles.
Article
Pseudo Resonance Induced Quasi-Periodic behaviour in Stochastic Threshold Dynamics is a preprint published by arXiv in 2011. It explains the ~100,000-year ice age cycle via stochastic resonance amplifying a weak eccentricity-driven insolation signal, alongside 20 kyr precession and 41 kyr obliquity cycles.
The analysis focuses on ~100 kyr (eccentricity/ice ages), ~20 kyr (precession), 41 kyr (obliquity). It also considers mechanism-focused, references measured ice-core record. This gives the cycle claim a specific numerical and evidential setting rather than presenting periodicity only as a visual impression.
The article reports the following result: The climate has changed in ice age cycles with a characteristic time scale of approximately 100 kyr. Main variations are due to precession (~20 kyr), obliquity (41 kyr) and eccentricity (~100 kyr) of Earth's orbit. The interpretation is strongest when it survives proxy uncertainty, model choice, dating error and comparison with established solar, orbital and ocean-atmosphere forcing.
For cycles researchers, the article brings together stochastic resonance, ice age cycles, milankovitch forcing, quasi-periodicity. It is relevant to climate-cycle research because observed periodicities may arise from orbital forcing, solar variability, ocean-atmosphere dynamics or internal stochastic behaviour.
Because it is a preprint, the work should be read alongside later peer-reviewed publications and independent replications. It remains useful because the proposed cycle, dataset and analytical approach are stated clearly enough to be scrutinised.
Source details and credits
- Source / publisher: arXiv
- Source type: Preprint
- URL type: PDF
- Credits: arXiv
- URL: https://arxiv.org/pdf/1106.1285