Fig. 11.


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Southern hemisphere aurora observed in ultra-violet by Dynamics Explorer 1 during the great magnetic storm in March 1989. The image was taken at 01:51 UT on 14 March. Note the rift in the aurora south of Antarctica (outlined in green) in the bottom half of the figure. [Adapted from Allen et al. 1989, with permission of John Wiley & Sons, Inc.]

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