Field-aligned currents (FAC) - last update: 24 November 1998, 1555 UT (RR)
Field-aligned currents (FAC, also called the Birkeland currents) are essential to the linkage between the solar wind - magnetosphere system and the ionosphere. The main large scale FAC systems are the Region 1 and 2 currents.

Region 1 currents

Region 2 currents

Mantle/NBZ currents

Special FAC types


See also: