Behaviour of the Geomagnetic Field during Reversals and Excursions

IF 0.4 4区 物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY Moscow University Physics Bulletin Pub Date : 2024-04-01 DOI:10.3103/S0027134924700152
M. Yu. Reshetnyak
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Abstract

As demonstrated by a three-dimensional geodynamo model, during reversals and excursions of the geomagnetic field, with small amplitudes of heat sources, there occurs attenuation not only of the dipolar magnetic field but also of the high harmonic field. In this scenario, the Earth’s magnetosphere can be significantly smaller than previously expected, and correspondingly, the amount of radiation that penetrates the Earth could be greater.

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地磁场在逆转和偏移时的行为
摘要 正如一个三维地球动力模型所证明的那样,在地磁场逆转和偏移期间,如果热源的振幅较小,不仅会出现偶极磁场衰减,而且还会出现高次谐波磁场衰减。在这种情况下,地球的磁层可能比以前预期的要小得多,相应地,穿透地球的辐射量也可能更大。
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来源期刊
Moscow University Physics Bulletin
Moscow University Physics Bulletin PHYSICS, MULTIDISCIPLINARY-
CiteScore
0.70
自引率
0.00%
发文量
129
审稿时长
6-12 weeks
期刊介绍: Moscow University Physics Bulletin publishes original papers (reviews, articles, and brief communications) in the following fields of experimental and theoretical physics: theoretical and mathematical physics; physics of nuclei and elementary particles; radiophysics, electronics, acoustics; optics and spectroscopy; laser physics; condensed matter physics; chemical physics, physical kinetics, and plasma physics; biophysics and medical physics; astronomy, astrophysics, and cosmology; physics of the Earth’s, atmosphere, and hydrosphere.
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