在白昼一侧的增加更大，表明环电流具有不对称性的特征。
The particles are heated and accelerated in the plasma sheet, and then injected into the near earth space, and produce the ring current and auroral substorm.等离子体片中的粒子被加热和加速后，注入近地空间，产生环电流和极区亚暴。
The simulation shows that there are two maximum ENA flux regions, i. e. , the ring current inner boundary region and particle precipitation region at the northern and southern poles.研究表明，存在环电流区方向和南北极区环电流粒子沉降带两个中性原子强度极大区域；
