"Stitched shot of incredible Alaskan scenery in Chugach State Park (view on large)" is Copyrighted by Flickr user: Alaskan Dude (Frank Kovalchek) under the Creative Commons Attribution license.
USGS Alaska Volcano Observatory
Founded in 1988, the Alaska Volcano Observatory monitors, assesses and dispenses information about the Alaskan volcanoes.
Eruption Records
People have been recording Alaskan volcanic activity since approximately 1760. As of 2009, the largest volcanic eruption in Alaska's historical time period was Novarupta/Katmai in 1912.
AVO Stations
In 2008, the Alaskan Volcano Observatory was capable of monitoring more than 30 volcanoes with 200 seismic stations.
Location
The Aleutian Arc contains the majority of the Alaskan volcanoes. Approximately 80 volcanoes are located in the 1,550-mile-long Aleutian Arc.
Eruption Frequency
Since 1760, there have been approximately 27 volcanoes in Alaska with 230 confirmed eruptions. However, there are more than 400 unconfirmed possible eruptions from 50 additional volcanoes.
