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本文是根据地球基本磁場起源的“发电机”理论而提出的地磁場倒转的电磁模型,认为地磁場的倒转是地核内部“环型”場反向的结果,若地球转速的“突然”扰动够大,则地幔与地核之间的电磁作用可以引起地球内部“环型”場的反向,从而实现地磁場的倒转,计算表明,这一扰动的性质是地球蒋动周期的减小,其数量级为10~2毫秒。文章的末尾计论了反向地磁場的维持问题,得出倒转磁場维持的时间间隔约为10~3年—10~6年。
This paper is based on the theory of “generator” of the origin of the earth’s basic magnetic field and proposes the electromagnetic model of inversion of the geomagnetic field. It is considered that the inversion of the geomagnetic field is the result of the inversion of the “ring type” field inside the earth core. If the “sudden” The electromagnetic effect between the mantle and the earth core can cause the inversion of the “ring type” field inside the earth and thus the reversal of the geomagnetic field. The calculation shows that the nature of this disturbance is the reduction of the period of the Earth’s turbulence, The order of magnitude is 10 to 2 milliseconds. At the end of the article, we discuss the problem of maintaining the reverse magnetic field, and find that the time interval for the reversal of the magnetic field is about 10 to 3 years-10 to 6 years.