Abstract—Perhaps for the first time, we obtained the distributed volume electric currents determined by the observed geomagnetic dipole. To do that, using the Maxwell’s equations and well-established geodynamo estimates, we have shown that the mean current density in the Earth’s liquid core is several orders of magnitude higher than in the solid core. Correspondingly, current density in our model vanishes in the solid core whereas in the liquid core, from maximally realistic simplifications, it is proportional to the distance to the dipole axis and directed around this axis. Using standard expansions, integrations, and the generally accepted IGRF model, we obtained total currents, the associated power of ohmic dissipation, volume current densities, and the directions of the current axis oriented as a dipole pole from 1900 to 2020.

摘要——也许我们第一次得到了由观测到的地磁偶极子确定的分布体积电流。为此，我们使用麦克斯韦方程组和完善的地球发电机估计，表明地球液态核心的平均电流密度比固态核心高几个数量级。相应地，我们模型中的电流密度在固体核心中消失，而在液体核心中，从最现实的简化来看，它与到偶极轴的距离成正比，并围绕该轴定向。使用标准扩展、积分和普遍接受的 IGRF 模型，我们获得了 1900 年至 2020 年的总电流、相关的欧姆耗散功率、体积电流密度以及定向为偶极子的电流轴的方向。