![]() ![]() The flight crew noted a sulfur odor upon descent into nearby Adak Island. Courtesy Miller and others (2003, Sheet 1).Īccording to McGimsey and Neal (1997), a commercial airline crew noted a small, bluish brown cloud possibly containing some ash on 11 June 1996, "rising a few hundred feet above the summit of the volcano." Strong winds carried the cloud down the SE flank of the volcano, depositing ash that discolored the snow. Notice that concentric to Kanaga to the SE is the arcuate Kanaton Ridge, inferred to be the remnant of Mount Kanaton, an ancestral volcano destroyed by structural collapse see generalized geologic cross section in the lower right-hand side of the figure. Preliminary geologic map showing Kanaga volcano. The last section looks at Kanaga seismicity in terms of located earthquakes and M C, Magnitude of Completeness, a means of looking at seismic data quality, homogeneity, and consistency, and the smallest events reliably recorded in the cataloged data (Wiemer and Wyss, 2000).įigures 1 and 2 comprise three maps showing, respectively, the location of Kanaga Island in the Aleutian Islands, a physical map of Kanaga Island showing the location of Kanaga volcano, and a geological map of the volcano.įigure 2. ![]() Data for 2012 is in a separate subsection. What follows is condensed from reports, primarily by researchers at AVO, describing the time span from 1996 to 2012. This information suggested either renewed low level eruptions or vigorous steaming from lava cooling in the summit crater. In addition to a brief explosion in February 2012, more information from the Alaska Volcano Observatory (AVO) has come to our attention, some discussing events more than a decade ago. In our last report on Kanaga, issued in 1995 ( BGVN 20:08), we discussed an eruption during January through mid-October 1994.
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