Ukinrek Maars (Alaska, USA)

Aerial view, looking north, over the Ukinrek Maars on the south shore of Becharof Lake on the Alaska Peninsula. The maar craters formed during a 10-day eruption in March and April of 1977.

Volcano: Ukinrek Maars (see Ukinrek Maars at the Smithsonian Institution website in a new tab)
Type: Soil Diffuse Emission
Description: The Ukinrek Maars are two phreatomagmatic vents that formed on the north side of the Aleutian Range on a low area bordering the Bering Sea.Water began pooling in the craters soon after the eruption. CO2- rich gas bubbled up through hot (81 °C) saline water at the bottom of the western maar in late-August 1977, and in July 1979 both craters contained lakes with trains of gas bubbles visible from shore.


Point of contact for this site:
William C. Evans, wcevans@usgs.gov (US Geological Survey)

Number of measurements: 1
Measurement date (d/m/y) Added by Added on
Ukinrek Maars_2106200421/6/2004 Emanuela Bagnato Sept. 26, 2016


Bibliographic references for this site

William E.C. , Deborah Bergfeld, Robert G. McGimsey, Andrew G. Hunt, 2009,Diffuse gas emissions at the Ukinrek Maars, Alaska: Implications for magmatic degassing and volcanic monitoring, Applied Geochemistry , vol.24, pp. 527–535, DOI: 10.1016/j.apgeochem.2008.12.007


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