The Alaska Volcano Observatory is a cooperative program
established in 1988 to monitor Alaskan volcanoes, primarily those
in the Cook Inlet Region. The agencies involved are the U.S. Geological Survey (USGS),
the University of Alaska Fairbanks Geophysical Institute (UAF/GI)
and the Alaska Division of Geological and Geophysical Surveys
(ADGGS). The principal source of funding is the Volcano Hazards
Program of the USGS. Other funds are provided by the State of
Alaska.
This page was first posted in early December, 1994.
Modifications to the page are logged here. Most recent modifications (except for the posting of weekly updates) were March 10, 1995.
A map of the Aleutian volcanic arc.
Almost all of Alaska's active volcanoes are in the Aleutian arc.
This map shows the locations of the volcanoes.
Many of the most active are labeled by name and with the date of
their last major eruption. Major in this sense is not precisely defined,
but generally means a large explosive eruption or emplacement of lava as
domes or flows. Because of the imprecise way "major" is defined there
is some room for argument about the years associated with some of the
volcanoes.
A catalogue of Alaskan volcanoes.
STILL UNDER CONSTRUCTION
Mt. Spurr's 1992 Eruptions
Eos, Transactions, American Geophysical Union, Vol. 74, no. 19, May 11, 1993, pages 217 and 221-222.
Open File Report 93-707 Photographs of the 1992 Eruptions of Crater
Peak, Spurr Volcano, Alaska
A paragraph about the 1989-1990 Redoubt Volcano eruptions.
Considerably more information can be found in the August 1 issue
of the Journal of Volcanology and Geothermal Research (Vol 62, No. 1-2 -- 26 papers
and 528 pages covering all aspects of the eruption). In addition USGS Circular
1061 (Brantley, 1990) is a 33 page description of the eruption.
Summaries of Alaskan and Kamchatkan volcanism for the periods
May-June 1994.|
July-August 1994.|
(The Alaska Volcano Observatory releases weekly Updates and periodic
Information Releases concerning north Pacific volcanism. These are
summarized in our internal bimonthly reports and are reproduced
here.)
A description of the September 30, 1994 Klyuchevskoy eruption.
This eruption did not get much press in the United States, but produced
an ash plume to 60,000 feet above sea level which severely affected air
traffic in the heavily traveled North Pacific air routes.
Some images (mostly AVHRR satellite) of current activity.