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Report on Amukta (United States) — September 1997

Bulletin of the Global Volcanism Network, vol. 22, no. 9 (September 1997)
Managing Editor: Richard Wunderman.

Amukta (United States) Ash puff on 2 March rises to just above the summit

Please cite this report as:

Global Volcanism Program, 1997. Report on Amukta (United States). In: Wunderman, R. (ed.), Bulletin of the Global Volcanism Network, 22:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199709-311190.

Volcano Profile |  Complete Bulletin


Amukta

United States

52.5°N, 171.252°W; summit elev. 1066 m

All times are local (unless otherwise noted)


On 2 March a pilot reported a small eruption at Amukta volcano in the central Aleutian Islands. Ash barely clearing the top of the volcano was reported.

Geologic Background. The symmetrical Amukta stratovolcano lies in the central Aleutians SW of Chagulak Island and is the westernmost of the Islands of the Four Mountains group. Amukta was constructed at the northern side of an arcuate caldera-like feature that is open to the sea along the southern coast of the 8-km-wide Amukta Island. The 1066-m-high stratovolcano overlies a broad shield volcano and is topped by a 400-m-wide crater. A cinder cone is located near the NE coast. Amukta has had several eruptions in historical time from both summit and flank vents.

Information Contacts: Alaska Volcano Observatory (AVO), a cooperative program of a) U.S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667, USA (URL: http://www.avo.alaska.edu/), b) Geophysical Institute, University of Alaska, PO Box 757320, Fairbanks, AK 99775-7320, USA, and c) Alaska Division of Geological & Geophysical Surveys, 794 University Ave., Suite 200, Fairbanks, AK 99709, USA.