A study of stochastic resonance in the periodically forced Rikitake dynamo

Chien Chih Chen, Chih Yuan Tseng

Research output: Contribution to journalArticlepeer-review

Abstract

The geodynamo has widely been thought to be an intuitive and self-sustained model of the Earth's magnetic field. In this paper, we elucidate how a periodic signal could be embedded in the geomagnetic filed via the mechanism of stochastic resonance in a forced Rikitake dynamo. Based on the stochastic resonance observed in the periodically forced Rikitake dynamo, we thus suggest a common triggering for geomagnetic reversal and glacial events. Both kinds of catastrophes may result from the cyclic variation of the Earth's orbital eccentricity.

Original languageEnglish
Pages (from-to)671-680
Number of pages10
JournalTerrestrial, Atmospheric and Oceanic Sciences
Volume18
Issue number4
DOIs
StatePublished - Oct 2007

Keywords

  • Geomagnetic reversal
  • Glaciation
  • Rikitake dynamo
  • Stochastic resonance

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