Volcanoes
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The Supervolcano at Yellowstone National Park
Beneath Yellowstone lies an immense supervolcano. Should a volcanic eruption occur, it would almost certainly result in nuclear winter and an immense loss of life.
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Coldest Decade on Earth in the Past 500 Years
1810-1819 was the coldest decade in 500 years. The Tambora volcano can explain the cold spell's second half. Now a mystery volcano seems to explain the first half.
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Mount Vesuvius, the Last Volcanic Eruption
The Mount Vesuvius eruption in 79 AD destroyed the Roman cities of Pompeii and Herculaneum. When did Vesuvius last erupt and when is the volcano likely to erupt again?
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Volcano Observatories Provided Recovery Funding
The U.S. Geological Survey operates volcano observatories in volcanically active regions like those near Mount Redoubt in Alaska and Yellowstone National Park in Wyoming.
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Pilots Encounter Kasatochi Cloud
Pilots report that the August 7th, 2008 eruption of Kasatochi Volcano, Alaska, produced high-altitude ash clouds that presented hazards to aircraft.
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Satellites See Kasatochi Eruption
An explosive eruption occurred at Kasatochi Volcano (52.18ºN, 175.51ºW) on the afternoon of August 7th, 2008, sending volcanic ash and gas 35,000 feet into the atmosphere
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Satellites Detect Okmok Eruption
Yet another large volcanic eruption has provided earth observers with valuable data of volcanic clouds in the atmosphere - the eruption of Okmok Volcano.
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Climate Change from Chaiten
When a volcanic eruption ejects enough material into the atmosphere, the effects can be local and global climate change.
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Chaiten Volcano Cloud Height
News agencies are reporting cloud heights of 20 miles, which is a great exaggeration of the actual cloud height of about 3-7 miles based on scientific analysis.
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Volcanic Hazards: Tsunamis
Volcanic activity can produce tsunamis, toxic gas, lava flows, lahars, and earthquakes. History shows us that these hazards can by deadly.
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Volcano Monitoring Techniques
Volcanic processes provide insight into volcanic activity and impending eruptions. The tools used to monitor these processes aid in hazard awareness.
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Volcano Hazards: Quakes and Slides
Volcanic activity can produce toxic gas, lava flows, lahars, and earthquakes. History shows us that these hazards can by deadly.
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Volcanic Hazards: Ash
Volcanic activity can produce toxic gas, lava flows, lahars, and earthquakes. History shows us that these hazards can by deadly.
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Volcanic Hazards: Gases and Lahars
Volcanic activity can produce toxic gas, lava flows, lahars, and earthquakes. History shows us that these hazards can by deadly.
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