What is the difference between active and dormant volcanoes?

Volcanoes are an impressive force of nature. Physically, they dominate the landscape, and have an active role in shaping our planet's geography. When they are actively erupting, they are an extremely dangerous and destructive ...

Scientists discover seamount in Pacific ocean

University of New Hampshire scientists on a seafloor mapping mission have discovered a new seamount near the Johnson Atoll in the Pacific Ocean. The summit of the seamount rises 1,100 meters from the 5,100-meter-deep ocean ...

Sinking sea mountains make and muffle earthquakes

Subduction zones—places where one tectonic plate dives beneath another—are where the world's largest and most damaging earthquakes occur. A new study has found that when underwater mountains—also known as seamounts—are ...

Indian Ocean cocktail party leaves trail of party hats behind

(PhysOrg.com) -- Scientists have unexpectedly found traces of the supercontinent Gondwana in the Indian Ocean - in the process solving a mystery behind a large group of ocean 'mountains' known as seamounts, including Christmas ...

Sinking seamount offers clues to slow motion earthquakes

Scientists have long puzzled over what happens when seamounts—mountains and volcanoes on the seafloor—are pulled into subduction zones. Now, new research from The University of Texas at Austin shows that when seamounts ...

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