Aurorae During a Substorm
Date: 12 April 2007
Depicts: Appearance of aurora during a substorm
Copyright: Jan Curtis
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These are photos of the aurora before and during a substorm. The left image is the typical appearance of the aurora before a substorm. During a substorm, the single auroral ribbon may split into several ribbons (middle image) or even break into clusters that race north and south (right image).
Last Update: 1 September 2019