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Scientific Investigations Report 2014–5159

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys. The Alaska Volcano Observatory is funded by the U.S. Geological Survey Volcano Hazards Program and the State of Alaska

2011 Volcanic Activity in Alaska: Summary of Events and Responses of the Alaska Volcano Observatory

By Robert G. McGimsey, J. Zebulon Maharrey, and Christina A. Neal

Thumbnail of and link to report PDF (23.9 MB)Abstract

The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, and volcanic unrest at or near three separate volcanic centers in Alaska during 2011. The year was highlighted by the unrest and eruption of Cleveland Volcano in the central Aleutian Islands. AVO annual summaries no longer report on activity at Russian volcanoes.

First posted August 29, 2014

For additional information, contact:
Director, Volcano Science Center
U.S. Geological Survey
4230 University Drive
Anchorage, Alaska 99508

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Suggested citation:

McGimsey, R.G., Maharrey, J.Z., and Neal, C.A., 2014, 2011 Volcanic activity in Alaska—Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2014–5159, 50 p.,

ISSN 2328-0328 (online)




Volcanic Activity in Alaska, Northeast to Southwest Along Aleutian Arc



Sources of Photographs in this Report and Other Images of Alaska

References Cited

Glossary of Selected Terms and Acronyms

Appendix 1. Volcano Alert Levels and Aviation Color Codes Used by United States Volcano Observatories

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