Volcanology
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Antarctica's Mount Erebus Volcano
Antarctica is most well-known for its glaciers and penguins, but this snow-covered continent is very much alive with geothermal and volcanic activity.
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Volcano Fields of the United States
Where the crust is stretched thin by tectonic activity, magma is able to rise through the surface. In the Western interior of the U.S., this has led to volcanoes.
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Subduction Zone Volcanoes of the United States
Subduction zones are one of the tectonic zones of the U.S. that produce volcanic activity. The Cascades Volcano Range and the Aleutian Island Volcano Arc are examples.
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The Carbonate Volcano of Africa
The vast majority of volcanoes erupt silica based magma, but this African volcano erupts magma that is carbonate based, making it very unique.
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Origins of Volcanism
Volcanism requires both a source of heat and something to melt. The planet provides the material for melting and the heat comes from a variety of sources.
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The Types of Volcanoes
The shapes and sizes of volcanoes are dependent on how frequently they erupt as well as the style of eruption.
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Satellite Images of Mt. Redoubt Volcano Eruption
The new eruption of Mt. Redoubt volcano was anticipated for weeks and started with an increase in seismic activity. Satellite images show large volcanic ash clouds.
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Types of Volcanic Eruptions
The types of eruptions get their names from volcanoes which have been historically recorded as exhibiting certain types of activities.
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Earthquake Swarm at Yellowstone National Park
Although one of the most beautiful places in the world, Yellowstone has a violent geologic record. New activity recorded by seismographs has the attention of geologists.
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The Volcano Explosivity Index
The explosivity of a volcanic eruption is characterized by the amount of material ejected, ash column height and impact of eruptions.
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The Five Deadliest Volcanic Eruptions
The eruptions of Tambora, Krakatau, Mont Pelee, Nevado del Ruiz and Unzen were the deadliest volcanic eruptions in recorded history.
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Volcanoes are Natural Polluters
Volcanoes have the ability to change Earth's atmosphere. Current eruptions are causing respiratory hazards and past eruptions have caused climate change.
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Satellite Detects Chaiten Eruption
The ash being emitted by the May 2008 eruption of Chaiten Volcano is detected using earth observing satellites
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Studying Volcanoes With Satellites
Volcanoes can be dangerous to study. Luckily for volcanologists, the vast array of satellites orbiting our planet can provide valuable information from a safe distance.
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