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<p>Increase in intensity of the heat sources in the Earth’s core reduces intensity of the dipole magnetic field. The spatial spectrum of the magnetic field becomes multipole. The intensity of magnetic dipole variations grows and its deviations from the rotation axis increase. The duration of magnetozones of constant polarity is power-law dependent on the amplitude of the magnetic dipole. The exponent of the power function can vary by a factor of two depending on dipole amplitude. Magnetic field superchrons correspond to high magnetic dipole intensity.</p>

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Magnetic Field Variations in Geodynamo Models

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • M. Yu. Reshetnyak

摘要

Increase in intensity of the heat sources in the Earth’s core reduces intensity of the dipole magnetic field. The spatial spectrum of the magnetic field becomes multipole. The intensity of magnetic dipole variations grows and its deviations from the rotation axis increase. The duration of magnetozones of constant polarity is power-law dependent on the amplitude of the magnetic dipole. The exponent of the power function can vary by a factor of two depending on dipole amplitude. Magnetic field superchrons correspond to high magnetic dipole intensity.