The Alaska Volcano Observatory (AVO) is a consortium of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the State of Alaska Division of Geological & Geophysical Surveys.

The volcanoes in Alaska make up more than three-quarters of U.S. volcanoes that have erupted in the past 200 years. Most of Alaska’s volcanoes are located along the 2,500 km (1,500 mi) Aleutian Arc, which extends westward from the mainland of Alaska towards Kamchatka, and forms the northern portion of the Pacific “ring of fire.”

Herrick, J.A., Neal, C.A., Cameron, C.E., Dixon, J.P., and McGimsey, R.G., 2014, 2012 Volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory: U.S. Geological Survey Scientific Investigations Report 2014-5160, 82p., http://dx.doi.org/10.3133/sir20145160.

detailed eruption and unrest histories of Alaska volcanoes from the present through the Pleistocene. more than 14,000 whole-rock geochemical analyses and 4,000 tephra glass analyses. more than 34,000 images, searchable by volcano, keyword, photographer, and more

2024年11月14日 · Clouds obscured the volcano in thermal infrared satellite and web camera images over the past day. A single explosive event occurred in May 2021 and was followed by the ongoing eruption of lava that began in July 2021.

From Miller and others (1998): "Kagamil volcano occupies most of the southern half of Kagamil Island, 55 km west of Umnak Island in the eastern Aleutian arc. The volcano consists of two cones and has an oval shape, 3.5 by 2 km in basal dimensions, with the long axis trending northwest-southeast.

AVO maintains networks of seismometers on select Alaska volcanoes to locate and detect the typically small earthquakes associated with volcanic processes. A typical seismic network consists of four or more seismometers installed close to the volcanic vent.

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137 and G23AC00070. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.

2024年10月16日 · Analysis of seismic data indicates a subtle increase in the rate and size of earthquakes over the past few weeks. Because this is a notable departure from the normal …

Kukak volcano contains a vigorous fumarole field at the southern base of the hydrothermally altered northern summit and is the only one of the Denison-Steller-Kukak chain of volcanoes to display geothermal activity.