Sometimes the aurora is "a bit more dynamic than usual" as during the afternoon on December 3rd 2005, when we could observe flickering aurora on and off for a long period, in the video above we show 70 s of flickering aurora observed with the Odin imager, that was pointing towards magnetic zenith with a field-of-view of 10-by-16 degrees. The swirling and rotating structures you can see have intensity-variations of approximately 10 per cent and at frequencies between 5 and 12 Hz. Investigating such dynamic aurora is one of the main objectives with the EISCAT 3D project - but making IS-radar measurements with time-resolution good enough to follow these variations will still be challenging. Our best chance to get forward will be to combine observations with the EISCAT 3D radar and optical instrumentation.

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