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IMAGE 169991

Video showing six hours of seismic data leading up to the May 25, 2021 Great Sitkin eruption. The number of earthquakes steadily increases leading up to the eruption at 05:04 UTC (09:04 AKDT), when the earthquakes cease. The top panel shows the spectrogram, and below is the seismic data. The audio is the subaudible seismic signal mapped to the range of human hearing. Video created by David Fee and Liam Toney, UAFGI/AVO.

Date: May 25, 2021 5:00 AM UTC
Volcano(es):Great Sitkin
Photographer/Creator: Fee, David; Toney, Liam
URL:http://www.avo.alaska.edu/images/image.php?id=169991

Citation Information:
Image courtesy of the AVO/UAF-GI.
Please cite the photographer and the Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image.

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Page modified: December 23, 2019 16:01
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