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 language | English |
|---|---|
| Pages (from-to) | 671-680 |
| Number of pages | 10 |
| Journal | Terrestrial, Atmospheric and Oceanic Sciences |
| Volume | 18 |
| Issue number | 4 |
| DOIs | |
| State | Published - Oct 2007 |
Keywords
- Geomagnetic reversal
- Glaciation
- Rikitake dynamo
- Stochastic resonance