1998 Volcanic Activity in Alaska and Kamchatka: Summary of Events and Response of the Alaska Volcano Observatory [open pdf - 1MB]
"The Alaska Volcano Observatory (AVO) monitors the more than 40 historically active volcanoes of the Aleutian Arc. Of these, 20 are monitored with short-period seismic instrument networks as of the end of 1998 (fig. 1 a,b). The AVO core monitoring program also includes daily analysis of satellite imagery, overflights, compilation of pilot reports and observations from local residents and ship crews. In 1998, AVO responded to eruptive activity or suspected volcanic activity at or near 7 volcanic centers (fig. 1 a,b; tables 1, 2); Shrub mud volcano, Augustine, Becharof Lake near Ukinrek Maars, Chiginagak, Shishaldin, Akutan, and Korovin. In addition to responding to eruptive activity at Alaska volcanoes, AVO assisted in the dissemination of information for the Kamchatkan Volcanic Eruption Response Team (KVERT) about the 1998 activity of 4 Russian volcanoes--Sheveluch, Klyuchevskoy, Bezymianny, and Karymsky (fig. 10; table 3). Due to prevailing wind directions, Kamchatkan volcanoes pose a serious threat to aircraft in the North Pacific (fig. 11). This report summarizes volcanic activity and AVO responses during 1998, as well as information on the reported activity at Russian volcanoes."
Open-File Report 03-423
Alaska Volcano Observatory: http://www.avo.alaska.edu/