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Volcanic activity
Episodes during which gases, ash, and lava (molten rock) escape from vents in the earth's crust, accompanied by minor tremors.
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Volcano monitoring (10 items)
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Results 1 - 10 of 48 listed by similarity [list alphabetically]
Volcano Hazards Program [New Window]
Homepage for USGS Volcano Hazards Program with feature stories, and links to worldwide volcano updates, volcanic hazards, reducing volcanic risk, USGS international programs, and resources such as educator's page, videos, and online reports.
Most recent updates for U.S. volcanoes [New Window]
Short descriptions of recent volcanic activity in the US.
Natural Hazards - Volcanoes [New Window]
News and related information focusing on the hazards associated with volcanoes in the United States.
1915: Lassen's most recent eruption [New Window]
Summary of the most recent eruption of Lassen Peak, Cascades (1914-1917)
Danger to aircraft from volcanic eruption clouds [New Window]
Explanation of problems encountered by aircraft due to volcanic emissions.
Earth tides and volcano monitoring [New Window]
Article in the May 28, 1998 issue of Volcano Watch describing of correlation of earth tides to volcanic eruptions and value in monitoring underground magma movement with deformation measurement instruments including tiltmeters and strainmeters.
Eruption warning and real-time notifications [New Window]
Describes strategy of volcano warnings and the real-time detection of a sudden eruption or lahar and immediate notification of the activity to the public and local, state, and federal emergency-management officials.
Eruptions from the Inyo chain about 600 years ago: sequence of events and effects in the Long Valley Area [New Window]
Describes the volcanic activity that occurred along the southern part of the Mono-Inyo Craters volcanic chain in California about 600 years ago.
Eruptions of Mount St. Helens: past, present, future [New Window]
Online booklet on the 1980 eruption of Mount St. Helens, past history, and future hazards.
Kilauea - eruption update and image archive [New Window]
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.
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