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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 (14 items)
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Results 31 - 40 of 65 listed by similarity [list alphabetically]
Hawaiian Volcano Observatory spotlight images archive [More info]
Images of Hawaiian volcanoes and the islands they've built in the past few million years, images of recent eruptions, and Hawaiian landscapes.
Kilauea - perhaps the world's most active volcano [More info]
Current activity, hazards, and history of eruptions of Kilauea Volcano.
PDF Kilauea--an Explosive Volcano in Hawaii [More info]
Explains how explosive eruptions occur here, shows the history of its eruptions, and describes the effects and hazards that accompany them.
Mauna Loa current activity [More info]
Current activity of Mauna Loa Volcano with news, GPS data, electronic tiltmeter data, and current seismicity plus links to long term monitoring.
Mauna Loa, Earth's largest volcano [More info]
Current activity, hazards, and history of eruptions of Mauna Loa.
PDF Mount Rainier - Living Safely With a Volcano in Your Backyard [More info]
One of our Nation's most dangerous volcanoes, Mount Rainier has been the source of countless eruptions and volcanic mudflows, and many people live in the areas that will be affected by it.
Preparing for volcanic emergencies [More info]
Describes activities of USGS scientists to increase public awareness of volcano hazards with links to publication and videos for public information on understanding and preparing for volcanic hazards.
Selected volcano information [More info]
Selected books, maps, videos, and other materials produced by the USGS Volcano Hazards Program. Many products highlighted here are intended for general audiences.
PDF This dynamic planet: World map of volcanoes, earthquakes, impact craters, and plate tectonics [More info]
Online world map with booklet (PDF format) giving an account of plate tectonics, volcanology, earthquake activity, and impact craters.
Types and effects of volcano hazards [More info]
Describes the 6 main types of hazardous activities and processes associated with volcanoes, including tephra, lava flows, pyroclastic flows, lahars (volcanic mudflows), landslides, and volcanic gas.
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