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Article results for “Volcanoes

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How Extinct Undersea Volcanoes Trigger Rare 'Tsunami Earthquakes'

Now, a new study suggests that tsunami earthquakes happen when two sections of Earth's crust, called tectonic plates, get hung up on extinct volcanoes on the ocean floor, called seamounts. The seamounts act like tread on a tire and make tectonic plates stick.

Eight dangerous volcanoes around the world

The eruption claimed at least one life and serves as a stark reminder that slumbering volcanoes pose grave dangers. Click on the "Next" label to learn about seven more dangerous volcanoes around the world. Italy's Mount Vesuvius is most famous for the A.D ...

Happy Birthday, Landsat: Space Science Project Turns 42

Images from the satellites have revealed mountain ranges in Antarctica and previously unmapped volcanoes. Instrumentation has improved, too: Landsat 8 carries instruments that can capture the Earth's surface down to a resolution of 49 feet (15 m).

Flying Dino? Bizarre Dinosaur Had 4 'Wings,' Long Tail Feathers

When Changyuraptor was alive, the area in which it lived "was a broad peninsula or wedge into the ocean, with volcanoes," Chiappe said.

Web results for “Volcanoes

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Volcano - Wikipedia, the free encyclopedia

Updated 13 hours ago

A volcano is a rupture on the crust of a planetary mass object, such as the Earth, which allows hot lava, volcanic ash, and gases to escape from a magma chamber below ...

Volcanoes - Volcano Facts, Volcano Information, Volcano ...

Updated July. 23, 2014

Get Volcano facts, photos, wallpapers, news and safety tips at National Geographic.

Learning about Volcanoes - Volcano World | Your World is ...

Updated July. 25, 2014

Under water volcanoes, both shallow and deep, erupt more often than we think. When an exceptionally large underwater volcano erupts, the lava that is produced cools ...

USGS Volcanoes - Volcano Hazards Program

Updated July. 27, 2014

Monitors volcanoes and collects scientific information on volcanoes in the United States and elsewhere to reduce the risk from volcanic activity.