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Fig. 15 | Progress in Earth and Planetary Science

Fig. 15

From: The science case for the EISCAT_3D radar

Fig. 15

ASK auroral camera measurement at the edge of an auroral arc (5 km x 5 km f-o-v at 100 km) revealing a small-scale vortex. The white circle is the EISCAT UHF beam at 100 km altitude, while the red arrow shows the electric field direction (courtesy of Dr. H. Dahlgren)

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