True color composite satellite image of Katmai National Park
region of Alaska. Composite produced with a Red-Green-Blue
channel combination of Band 3 - Band 2 - Band 1 respectively.
This combination produces an image that produces colors
similar to human eye sight. The eruption of Novarupta and
Mt. Katmai on June 6, 1912 was the largest volcanic eruption
anywhere in the world for the entire 20th Century. The 60 hour
eruption began at Novarupta, then Mt. Katmai collapsed to
form a 2 mile wide caldera. The last part of the eruption was
the formation of a lava dome at Novarupta. Most of the pyroclastic
deposits from the eruption were deposited in what is
now known as the Valley of Ten Thousand Smokes. The valley received this name because the deposits remained
so hot for several years after the eruption that steam was released continuously from fumaroles that it looked like
the ground was always smoking. Other volcanoes in the park that can be seen in this image are Mt. Martin and Mt.
Mageik (in the lower left corner), Mt. Griggs (north of Novarupta and east of the Valley of Ten Thousand Smokes),
and Mt. Trident (southeast of Novarupta). Mt. Trident produced a series of eruptions from 1953 to 1974 that resulted
in lava flows that extend mostly to the south of the summit. Produced by Steve J. Smith, Volcanology/Remote
Sensing Graduate Student from the Geophysical Institute University of Alaska Fairbanks, the College of Science,
Engineering, and Mathematics, and the Alaska Volcano Observatory. Image was run through a linear enhancement.
Image courtesy of the author and AVO / University of Alaska Fairbanks, Geophysical Institute.
Please cite the image author and Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image.
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