Steaming Pavlof volcano and Pavlof Sister as viewed from the west shore of Unga Island, Alaska. View is to the west.
Where can I find information about volcanoes in Alaska?
Alaska contains over 130 volcanoes and volcanic fields which have been active within the last two million years. Of these volcanoes more than 50 have been active within historical time (since about 1760, for Alaska).
Visit the Alaska Volcano Observatory (AVO) for information on Alaska Volcanoes. The Alaska Volcano Observatory (AVO) covers volcanoes in Alaska from offices in Anchorage and Fairbanks, Alaska, and is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
Social media options include the USGS Volcanoes on Twitter
Related
How many volcanoes are in Alaska?
Alaska contains over 130 volcanoes and volcanic fields which 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 have been active within historical time (since about 1760, for Alaska). These volcanoes are catalogued on the Alaska Volcano Observatory Map & Alphabetical...
How often do Alaskan volcanoes erupt?
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 and Preserve is the most recent. Scientists are particularly concerned about the volcanoes whose eruptions can affect the Cook Inlet region, where 60 percent...
What was the largest volcanic eruption in the 20th century?
The world's largest eruption of the 20th century occurred in 1912 at Novarupta on the Alaska Peninsula in what is now Katmai National Park and Preserve. An estimated 15 cubic kilometers of magma was explosively erupted during 60 hours beginning on June 6th. This volume is equivalent to 230 years of eruption at Kilauea (Hawaii) or about 30 times the volume erupted by Mount St. Helens (Washington)...
Steaming Pavlof volcano and Pavlof Sister as viewed from the west s...
Steaming Pavlof volcano and Pavlof Sister as viewed from the west shore of Unga Island, Alaska. View is to the west.
PubTalk 6/2012 — Exploring The Valley of Ten Thousand Smokes
-- a Centennial perspective of the Novarupta-Katmai eruption, the largest of the 20th century
By Judy Fierstein, USGS
-- a Centennial perspective of the Novarupta-Katmai eruption, the largest of the 20th century
By Judy Fierstein, USGS
Volcano Web Shorts 4 - Instruments
USGS technologist Rick LaHusen describes how the development and deployment of instruments plays a crucial role in mitigating volcanic hazards.
USGS technologist Rick LaHusen describes how the development and deployment of instruments plays a crucial role in mitigating volcanic hazards.
PubTalk 12/2010 — Forecasting Volcanic Eruptions in Alaska
-- the contrasting stories of two recent spectacular eruptions
by Stephanie Prejean, USGS Alaska Volcano Observatory
-- the contrasting stories of two recent spectacular eruptions
by Stephanie Prejean, USGS Alaska Volcano Observatory
PubTalk 11/2009 — Geohazards in the Aleutian Islands
Great Earthquakes, Great Waves, and Great Volcanic Explosions!
by Steve Kirby, Geophsicist, and Dave Scholl, Scientist Emeritus
Great Earthquakes, Great Waves, and Great Volcanic Explosions!
by Steve Kirby, Geophsicist, and Dave Scholl, Scientist Emeritus
Shishaldin Volcano at Sunset
Shishaldin Volcano at sunset. Shishaldin is on Unimak Island, part of Izembek National Wildlife Refuge, Alaska.
Shishaldin Volcano at sunset. Shishaldin is on Unimak Island, part of Izembek National Wildlife Refuge, Alaska.
Alaska Volcano Observatory Monitoring Room
This photos was staged to simulate how scientists monitor data.
This photos was staged to simulate how scientists monitor data.
Redoubt volcano with minor ash eruption. Photograph taken during o...
Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.
Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06. This photo was taken during a FLIR/maintenance flight on January 24, 2006.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06. This photo was taken during a FLIR/maintenance flight on January 24, 2006.
Augustine Volcano
Augustine volcano viewed from the west.
Augustine volcano viewed from the west.
Mt. Spurr, Crater Peak
Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.
Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.
Valley of Ten Thousand Smokes, Alaska
View southeast from Overlook Cabin looking over the Valley of Ten Thousand Smokes. The pyroclastic and ash deposits that fill the valley remain nearly vegetation-free more than 100 years after the 1912 Novarupta-Katmai eruption.
View southeast from Overlook Cabin looking over the Valley of Ten Thousand Smokes. The pyroclastic and ash deposits that fill the valley remain nearly vegetation-free more than 100 years after the 1912 Novarupta-Katmai eruption.
Redoubt Volcano
Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater.
Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater.
Related
How many volcanoes are in Alaska?
Alaska contains over 130 volcanoes and volcanic fields which 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 have been active within historical time (since about 1760, for Alaska). These volcanoes are catalogued on the Alaska Volcano Observatory Map & Alphabetical...
How often do Alaskan volcanoes erupt?
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 and Preserve is the most recent. Scientists are particularly concerned about the volcanoes whose eruptions can affect the Cook Inlet region, where 60 percent...
What was the largest volcanic eruption in the 20th century?
The world's largest eruption of the 20th century occurred in 1912 at Novarupta on the Alaska Peninsula in what is now Katmai National Park and Preserve. An estimated 15 cubic kilometers of magma was explosively erupted during 60 hours beginning on June 6th. This volume is equivalent to 230 years of eruption at Kilauea (Hawaii) or about 30 times the volume erupted by Mount St. Helens (Washington)...
Steaming Pavlof volcano and Pavlof Sister as viewed from the west s...
Steaming Pavlof volcano and Pavlof Sister as viewed from the west shore of Unga Island, Alaska. View is to the west.
Steaming Pavlof volcano and Pavlof Sister as viewed from the west shore of Unga Island, Alaska. View is to the west.
PubTalk 6/2012 — Exploring The Valley of Ten Thousand Smokes
-- a Centennial perspective of the Novarupta-Katmai eruption, the largest of the 20th century
By Judy Fierstein, USGS
-- a Centennial perspective of the Novarupta-Katmai eruption, the largest of the 20th century
By Judy Fierstein, USGS
Volcano Web Shorts 4 - Instruments
USGS technologist Rick LaHusen describes how the development and deployment of instruments plays a crucial role in mitigating volcanic hazards.
USGS technologist Rick LaHusen describes how the development and deployment of instruments plays a crucial role in mitigating volcanic hazards.
PubTalk 12/2010 — Forecasting Volcanic Eruptions in Alaska
-- the contrasting stories of two recent spectacular eruptions
by Stephanie Prejean, USGS Alaska Volcano Observatory
-- the contrasting stories of two recent spectacular eruptions
by Stephanie Prejean, USGS Alaska Volcano Observatory
PubTalk 11/2009 — Geohazards in the Aleutian Islands
Great Earthquakes, Great Waves, and Great Volcanic Explosions!
by Steve Kirby, Geophsicist, and Dave Scholl, Scientist Emeritus
Great Earthquakes, Great Waves, and Great Volcanic Explosions!
by Steve Kirby, Geophsicist, and Dave Scholl, Scientist Emeritus
Shishaldin Volcano at Sunset
Shishaldin Volcano at sunset. Shishaldin is on Unimak Island, part of Izembek National Wildlife Refuge, Alaska.
Shishaldin Volcano at sunset. Shishaldin is on Unimak Island, part of Izembek National Wildlife Refuge, Alaska.
Alaska Volcano Observatory Monitoring Room
This photos was staged to simulate how scientists monitor data.
This photos was staged to simulate how scientists monitor data.
Redoubt volcano with minor ash eruption. Photograph taken during o...
Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.
Redoubt volcano with minor ash eruption. Photograph taken during observation and gas data collection flight by AVO staff March 30, 2009.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06. This photo was taken during a FLIR/maintenance flight on January 24, 2006.
A gas plume arising from Augustine Volcano during it's eruptive phase 2005-06. This photo was taken during a FLIR/maintenance flight on January 24, 2006.
Augustine Volcano
Augustine volcano viewed from the west.
Augustine volcano viewed from the west.
Mt. Spurr, Crater Peak
Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.
Roiling eruption column rising from Crater Peak vent of Mt. Spurr volcano. View from the south.
Valley of Ten Thousand Smokes, Alaska
View southeast from Overlook Cabin looking over the Valley of Ten Thousand Smokes. The pyroclastic and ash deposits that fill the valley remain nearly vegetation-free more than 100 years after the 1912 Novarupta-Katmai eruption.
View southeast from Overlook Cabin looking over the Valley of Ten Thousand Smokes. The pyroclastic and ash deposits that fill the valley remain nearly vegetation-free more than 100 years after the 1912 Novarupta-Katmai eruption.
Redoubt Volcano
Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater.
Ascending eruption cloud from Redoubt Volcano as viewed to the west from the Kenai Peninsula. The mushroom-shaped plume rose from avalanches of hot debris (pyroclastic flows) that cascaded down the north flank of the volcano. A smaller, white steam plume rises from the summit crater.
Updated Date: February 12, 2025