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Relative drift between black aurora and the ionospheric plasma

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Academic year: 2021

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Figure

Table 1 gives the geophysical context for each black au- au-rora event in the two campaigns
Fig. 2. Summary of the plasma drift measurements by EISCAT.
Fig. 4. Two images from event 03C, about 0.5 s apart, showing the black aurora in an on (upper image) and off (lower image) phase of the pulsating aurora (veiling).
Fig. 5. An image from event 03D, where elongated black patches were drifting rapidly and parallel to the plasma flow (indicated by the vector).
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