Mesoscale Auroral Curls in Iceland
Taken by Jeff Dai on January 16, 2024 @
Kerid Crater, Iceland
Click photo for larger image
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Camera Used: SONY ILCE-7RM5
Exposure Time: 25/10
Aperture: f/1.8
ISO: 6400
Date Taken: 2024:01:17 18:42:16
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Details:
A rare image of the aurora. The view highlight the wave in the middle of the frame. It’s still a hot topic for the experts. The specialist told me that the formation of these curl-like structures may be connected with flow shear driven by ultra-low frequency waves. These curls are fine structures in the poleward boundary of multiple arcs formed by longitudinal-arranged field-aligned current pairs. It look like to the Auroral Undulations Triggered by Kelvin-Helmholtz Waves.
The view was captured when the aurora appears in the zenith which exists just several minutes. I also captured a timelapse video at that moment. Photo taken at Kerid Crater, Iceland on Jan 16th. 2024.
Video:https://youtu.be/jTOjWzXR4-M
Photographer's website:
https://twanight.org/dai
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