Abstract
Two regions of field-aligned currents of magnetospheric origin have recently been found1–3 along the auroral oval and region 1 currents flow at a slightly higher latitude than those in region 2. Figure 1 shows the distribution and flow directions of such field-aligned currents determined from Triad data4. We discuss here the effects that these currents seem to have on the distribution of electric fields in the ionosphere, in addition to the Sq electric field of ionospheric origin.
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References
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MAEKAWA, K., MAEDA, H. Electric fields in the ionosphere produced by polar field-aligned currents. Nature 273, 649–650 (1978). https://doi.org/10.1038/273649a0
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DOI: https://doi.org/10.1038/273649a0
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