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What are the 2 most active volcanoes?

The recent eruption of Italy's Stromboli volcano has the potentially deadly natural phenomenon on everyone's radar as Hawaii's Mauna Loa is also displaying signs of increased seismic activity. Stromboli and Mauna Loa are two of the world's most active volcanoes.



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The second most active volcano in the world is Mount Etna, a composite volcano on the east coast of Sicily.

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Although Kilauea and Mauna Loa are by far the most active, they combine with three other volcanoes to make up the Island of Hawai?i.

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Rising gradually to more than 4 km (2.5 mi) above sea level, Hawaii's Mauna Loa is the largest active volcano on our planet. Its submarine flanks descend to the sea floor an additional 5 km (3 mi), and the sea floor in turn is depressed by Mauna Loa's great mass another 8 km (5 mi).

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The Yellowstone supervolcano last erupted about 640,000 years ago. A sleeping giant is nestled in the western part of the United States. Though it stirs occasionally, it has not risen from slumber in nearly 70,000 years.

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As pressure is released, gases dissolved in the magma come out of solution, turning the magma into a boiling froth. The total energy released would be equivalent to an 875,000 megaton explosion. The shockwave would kill 90,000 people. Most of the lava would fall back into the crater.

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Steamboat Geyser did not have a major eruption in September, but minor eruptions starting in late September indicate that the geyser is likely to erupt in the coming weeks. There have been six major water eruptions of the geyser so far in 2023.

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A: For the most likely type of volcanic eruption in Yellowstone, everywhere would be safe except in the immediate vicinity of the advancing lava flow. In the highly improbable event of a large catastrophic eruption, the great the distance from the eruptive center, the safer it would be.

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Three of the seven supervolcanoes in the world are in the U.S.:
  • California: Long Valley Caldera.
  • New Mexico: Valles Caldera.
  • Wyoming: Yellowstone.


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Lava has been spilling out of Puu Oo crater since 1983, making Kilauea the world's longest continuously erupting volcano.

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