Novarupta

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Novarupta

Novarupta Lava Dome
Elevation:2,759 ft (841 m)
Coordinates: Template:Coor dms
Location:Alaska
Range:
Type:Caldera
Missing image
Map_of_Alaska_Peninsula_Volcanoes.gif
Map showing volcanoes of Alaska.


Novarupta is a volcano, located on the Alaska Peninsula in the Katmai area, about 290 miles southwest of Anchorage. Its eruption of June 6-June 8, 1912 was ten times more powerful than the 1980 eruption of Mount St. Helens and also lead to the formation of this 841 metre (2760ft) volcano. See: 1912 Novarupta eruption.

The 1912 Novarupta eruption was the largest volcanic eruption in the 20th century. About 15 km≥ of volcanic material had been ejected. The 1815 eruption of Tambora however, had displaced about 7 times as much material. The 1883 eruption of Indonesia's Krakatoa displaced half as much as Novarupta. Novarupta's 1912 eruption has been rated a 6 on the Volcanic Explosivity Index. Magma from the Katmai area was drained away to Novarupta which resulted in a collapse caldera.

Novarupta sits below Mount Katmai, which collapsed as a result of material being expelled from the volcano. The lava dome that formed to plug the vent from which the eruption occurred is what is now referred to as Novarupta. Pyroclastic ash flow from the eruption formed what was named the Valley of Ten Thousand Smokes by Robert Griggs, who explored the volcano's aftermath for the National Geographic Society in 1916. Katmai National Park and Preserve was formed to protect the area around Novarupta.

External links

de:Novarupta

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