Abstract

Modern geodynamo models allow the generation of a magnetic field without reversals and with frequent reversals. The transition from one regime to another is associated with a relatively small change in the intensity of the generation sources. From this, it is usually concluded that the geodynamo system is located near such a transition, which, generally speaking, requires a more detailed justification. Such a transition leads to other changes in the behavior of the geomagnetic field, which are analyzed in this paper based on modern geodynamo models, in particular, the degree to which the dipole of the magnetic field is violated, the change in its strength, and the ratio of the decay time and growth of the dipole during the reversal.

中文翻译：

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地磁场的逆转：地球核心对流强度的约束

摘要

现代的地球动力学模型允许产生磁场而不会发生逆转，并且会频繁发生逆转。从一种状态到另一种状态的转变与发电源强度的相对较小变化有关。由此得出的结论通常是，土力发电系统位于这种过渡附近，通常来说，这需要更详细的论据。这种转变会导致地磁场行为的其他变化，本文将基于现代地发电机模型进行分析，尤其是磁场偶极子受到破坏的程度，强度的变化以及反转期间衰减时间与偶极子增长的比率。