Episodes during which gases, ash, and lava (molten rock) escape from vents in the earth's crust, accompanied by minor tremors.
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.
Geologic hazards at volcanoes [ More info] Poster diagram showing the various hazards that accompany volcanic activity as they relate to the structure of the volcano.
Geologic history of Long Valley Caldera and the Mono-Inyo Craters volcanic chain, California [ More info] Summarizes the geologic and volcanic activity of the Long Valley Caldera and Mono-Inyo Craters volcanic chain in east central California.
Hawaiian Volcano Observatory [ More info] Hawaiian Volcano Observatory's latest news with links to information on Kilauea, Mauna Loa, and other volcanoes, earthquakes, volcanic hazards, photo archive, and general information about the center.
Hawaiian Volcano Observatory (HVO) earthquakes: HVO seismic network [ More info] Description of the seismic monitoring of the active Hawaiian volcanoes with information on the network, instrumentation, and recording stations with links to related information.
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.
Integrated geologic, geochemical, and geophysical studies of Big Bend National Park, Texas [ More info] Coordinated studies of the effect of historical mining for mercury, origin and composition of metals in groundwaters and surface waters, history of volcanic and intrusive activity, and the complex geological history of this area.
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.
Kilauea - perhaps the world's most active volcano [ More info] Current activity, hazards, and history of eruptions of Kilauea Volcano.
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.
Alphabetical Index of Topics
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