The basic structure and dynamics of the primary electric current systems in the Earth's magnetosphere is presented and discussed. In geophysics, the word current is used to describe the flow of mass from one location to another, and its analogue of electric current is a flow of charge from one place to another. An electric current is associated with a magnetic field, and they combine with the Earth's internally-generated dipolar magnetic field to form the topology of the magnetosphere. The concept of an electric current is reviewed and compared with other approaches to investigating the physics of the magnetosphere. The implications of understanding magnetospheric current systems is discussed, including paths forward for new investigations with the robust set of observations being produced by the numerous scientific and commercial satellites orbiting Earth.

中文翻译：

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地球磁层中的当前系统

介绍和讨论了地球磁层中初级电流系统的基本结构和动力学。在地球物理学中，“电流”一词用于描述质量从一个位置到另一个位置的流动，它与电流的类似物是电荷从一个地方流向另一个地方。电流与磁场有关，它们与地球内部产生的偶极磁场结合，形成磁层的拓扑结构。回顾了电流的概念，并将其与其他研究磁层物理的方法进行了比较。讨论了理解磁层电流系统的含义，