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Izvestiya, Physics of the Solid Earth

, Volume 53, Issue 5, pp 695–701 | Cite as

Intermittence and peculiarities of a statistic characteristic of the geomagnetic field in geodynamo models

  • A. V. KhokhlovEmail author
  • F. Lhuillier
  • V. P. Shcherbakov
Article
  • 41 Downloads

Abstract

The analysis of the statistical characteristics of the geomagnetic field generated in the numerical geodynamo models has shown that the distribution of the spherical harmonic coefficients in some cases is not Gaussian but, instead, has much in common with the Laplace distribution. The shape of the corresponding histograms depends on the time scale, which allows interpreting the obtained data in terms of a mixture of Gaussian distributions. The similar effects associated with the intermittence were observed in the experiments in a turbulent fluid flow. Hence, the behavior of secular variations in the magnetic field of the Earth should perhaps be described in terms of a mixture of several Gaussian stationary processes corresponding to switching between the different regimes of geodynamo generation.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • A. V. Khokhlov
    • 1
    • 2
    Email author
  • F. Lhuillier
    • 3
  • V. P. Shcherbakov
    • 2
    • 4
    • 5
  1. 1.Institute of Earthquake Prediction Theory and Mathematical GeophysicsRussian Academy of SciencesMoscowRussia
  2. 2.Schmidt Institute of Physics of the EarthRussian Academy of SciencesMoscowRussia
  3. 3.Ludwig-Maximilian University of MunichMunichGermany
  4. 4.Kazan (Volga Region) Federal UniversityKazanRussia
  5. 5.Borok Geophysical Observatory, Schmidt Institute of Physics of the EarthRussian Academy of SciencesBorokRussia

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