Are drivers of northern lights in the ionosphere?
Abstract. It is reported that transverse electric fields penetrating the ionosphere either from distant space or from the upper atmosphere produce charge separations along the field lines by building up positive charges immediately above the ionosphere. Those parallel electric fields produced by the charge separation deserve auroral driver. This paper discusses why and how these internal drivers in the polar ionosphere are applied for the formation of spiral auroras in the dusk sector.
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