Episodes during which gases, ash, and lava (molten rock) escape from vents in the earth's crust, accompanied by minor tremors.
Eruptions of Lassen Peak, California, 1914 to 1917 [ More info] Summary of the most recent eruption of Lassen Peak, Cascades (1914-1917)
Eruptions of Mount St. Helens: past, present, future [ More info] Online booklet on the 1980 eruption of Mount St. Helens, past history, and future hazards.
Kilauea - eruption update and image archive [ More info] Current Kilauea eruption activity, updated daily with recent photos, maps, and deformation information and links to video for broadband users, photo glossary, and image archive.
Potential hazards from future volcanic eruptions in the Long Valley -- Mono Lake Area, California [ More info] An introduction to the volcano hazards in the Long Valley area based on the past geologic history of the Long Valley Caldera and the Mono-Inyo Craters volcanic chain.
The ongoing Pu'u 'O'o eruption of Kilauea Volcano, Hawai'i -- 30 years of eruptive activity [ More info] Fact sheet chronicles and illustrates Kilauea Volcano's longest rift-zone eruption in more than 500 years.
The story of the Hawaiian Volcano Observatory -- A remarkable first 100 years of tracking eruptions and earthquakes [ More info] History of the Hawaiian Volcano Observatory (HVO), established in 1912, including an overview of Hawaiian volcanic processes and USGS monitoring techniques.
Volcano monitoring at Yellowstone National Park [ More info] Describes volcano monitoring at Yellowstone National Park including an update of recent volcanic activity, real-time data, and link to volcano monitoring techniques information.
Monitoring data of the Long Valley caldera and Mono-Inyo Craters volcanic chain, California [ More info] Describes the monitoring effort and provides real-time data of the current restless activity of the caldera, including earthquakes, ground deformation, and release of volcanic gas and plus link to volcano monitoring techniques.
Volcano video and television surveillance monitoring systems [ More info] Visual monitoring of volcanoes by closed-circuit television and video monitoring for a permanent video record of events using slow-scan television which permits continuous surveillance at a distance for remote volcanoes or in times of danger.
Airborne Volcanic Ash - A Global Threat to Aviation [ More info] Explains the problem, describes procedures used to cope with it, ways of monitoring and detecting hazardous conditions, and warning systems currently available to help mitigate the dangers.
Alphabetical Index of Topics
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