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Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 4 | Geoscience Letters

Fig. 4

From: The importance of ground magnetic data in specifying the state of magnetosphere–ionosphere coupling: a personal view

Fig. 4

Schematic illustration of the auroral electrojets, along with dominant direction of the electric fields. The Harang discontinuity separates the eastward electrojet to the west, and the westward electrojet to the east. This illustration indicates that there are two components within the westward electrojet: One is conductivity dominant in the midnight to early morning sector and the other is electric field dominant primarily in the late morning sector. Adapted from Kamide and Kokubun (1966)

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