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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 4 | Geoscience Letters

Fig. 4

From: Transmission of the electric fields to the low latitude ionosphere in the magnetosphere-ionosphere current circuit

Fig. 4

(top, thick solid curves) Vertical drift of the F-region ionosphere observed with the HF Doppler sounder over the equator (KODAIKANAL), which is well correlated with the DP2 magnetic fluctuations at the (middle) dayside equator (ALCANTARA) and (bottom) afternoon high latitude (NURMIJARVI). The electric field deduced from the drift velocity is significantly enhanced in the evening with the same direction as in the day. (from Fig. 2 of Abdu et al. 1988)

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