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In fluid dynamics, a vortex is a region in a fluid in which the flow revolves around an axis line, and that's not what we are seeing in the photo, is it? I don't think it's a vortex because it's not revolving. Maybe it vaguely resembles some types of vortices but that's not enough to make it a vortex. It's an interesting photo in any case, thanks for posting it.
originally posted by: LSU2018
Did you see the view from Camera #2? That vortex keeps growing bigger and bigger.
The plume of smoke/ash is of course pretty normal for a volcano.
originally posted by: SwampFox999
a reply to: LSU2018
Wtf? Is that normal for a volcano??
The shock of the volcanic eruption generated mesospheric gravity waves (or “mesospheric airglow waves”) that were evident in the Day/Night Band, shown in the toggle below between the 11.45 µm and the night-time visible imagery.