Generally the phase, of the potential distribution outside the polar cap is different from that of the driving potential at the polar cap, and so are the phases of the region 1 and 2 field-aligned currents.

• 一般说来,极盖区外电场分布的位相与极盖区边界的驱动势不同,一、二区场向电流的位相与驱动势也有差异。 这些现象都是场向电流与电导率共同影响的结果。