Signs of Activity at Mount Redoubt, Alaska
AVO/USGS pictures of non-eruptive activity from January and February, 2009
Oblique aerial photo of a muddy meltwater stream and waterfall produced by melting of Redoubt's summit glacier by hot rock below. Photograph by Kristi Wallace, AVO/USGS, February 2, 2009.
Oblique photo of the north flank of Redoubt Volcano showing recent fumarole activity. The vigorous steam and gas plume is coming from a large fumarole that developed between January 28 and January 30, 2009. Photograph by Kristi Wallace, AVO/USGS, January 30, 2009.
Helicorder image from January 23 through February 2, 2009 for Redoubt station RSO EHZ. Image created by Heather Bleick, AVO/USGS, February 2, 2009. Enlarge image
Oblique photo of the north flank of Redoubt Volcano showing fumarolic activity, exposed rock, holes in the ice and ice collapse features, all of which are signs of hot rock below. Photograph by Kristi Wallace, AVO/USGS, January 30, 2009.
Oblique photo showing a close-up view of two fumarole vents from the photo above. Photograph by Kristi Wallace, AVO/USGS, January 31, 2009.
 Heat from activity below melts the snow and ice cover on Mount Redoubt to produce these flows of muddy water. Photograph by Cyrus Read, AVO/USGS, January 27,2009.
More Information on Redoubt
Redoubt's last volcanic eruption was in 1989 and 1990. See our "Redoubt Volcano - Eruption Pictures" for a visual summary of the eruption. We also have a general article on Redoubt Volcano that describes its location, plate tectonic environment, geology, eruptive history and other information.
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Mount Vesuvius: An interesting article on the volcano's eruption history, geologic hazards, plate tectonics and more. By Jessica Ball. |
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Mount Etna: Learn about Etna’s eruption history, plate tectonics and more in this article by Jessica Ball. |
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Igneous Rocks: formed from the solidification of molten rock material.
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Volcanoes: A page that links to all of our volcano articles and to the best volcano information that we could find.
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Volcanic Ash: Volcanic ash can devastate a community that is miles away from a volcano.
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