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.”

For a vast trove of information about Alaska volcanoes, check out the Alaska Volcano Observatory. This easy-to-navigate website has current status of erupting volcanoes plus an atlas with maps, photographs, webcams , eruption history, scientific research and more.

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.

Alaska contains over 130 volcanoes and volcanic fields that have been active within the last two million years. Of these volcanoes, about 90 have been active within the last 10,000 years (and might be expected to erupt again), and more than 50 …

2018年2月3日 · Alaskan volcanoes have produced one or two eruptions per year since 1900. At least 20 catastrophic caldera-forming eruptions have occurred in the past 10,000 years; the awesome eruption of 1912 at Novarupta in what is now Katmai National Park …

1 天前 · A recent alert put out by the Alaska Volcano Observatory indicates that Mount Spurr — an 11,070 foot (3,370 meter) volcanic peak located 75 miles west of Anchorage — is showing signs of ...

Most of Alaska’s volcanoes are along the Aleutian Arc, extending westward from central Alaska along the Alaska Peninsula and the Aleutian Islands toward eastern Russia. This is also the northern portion of the Ring of Fire, where the Pacific plate meets other plates.

AVO was formed in 1988, and uses federal, state, and university resources to monitor and study Alaska's volcanology, hazardous volcanoes, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property.

The purpose of this webmap is to document the location and most recent eruptive events of the historically active volcanoes throughout Alaska.

2016年3月1日 · To mitigate volcanic hazards, AVO monitors and studies Alaska's hazardous volcanoes to forecast and record eruptive activity. AVO also monitors volcanic activity in the Commonwealth of the Northern Mariana Islands.