Mount Ontake

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Mount Ontake
御嶽山
File:Kiso Ontake.jpg
Viewed from the SEE.
Highest point
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Prominence Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). [2]
Listing Ultra
100 famous mountains in Japan
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Geography
Mount Ontake is located in Japan
Mount Ontake
Mount Ontake
Japan
Location Gifu and Nagano, Chūbu region, Japan
Topo map Geographical Survey Institute, 25000:1 御嶽山, 50000:1 御嶽山
Geology
Mountain type Stratovolcano
Last eruption September 2014

Mount Ontake (御嶽山 Ontake-san?), also referred to as Mount Kiso Ontake (木曽御嶽山 Kiso Ontake-san?), is the second highest volcano in Japan (after Mount Fuji) at 3,067 m (10,062 ft).[3]

Description

Mt. Ontake is located around 100 km (62 mi) northeast of Nagoya, and around 200 km (125 mi) west of Tokyo, at the borders of Kiso and Ōtaki, Nagano Prefecture, and Gero, Gifu Prefecture.

File:Ontake Volcano Relief Map, SRTM-1.jpg
Relief Map of Ontake volcano.

The volcano has five crater lakes, with Ni no Ike (二ノ池?) at 2,905 m (9,531 ft) being the highest mountain lake in Japan.

Ontake is a major sacred mountain, and following older shamanistic practices, actors and artists have gone to the mountain to put themselves into trances in order to get divine inspiration for their creative activities.[4]

Eruptions

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See also: 2014 Mount Ontake eruption
File:Mount Ontake from Kurakake Pass.JPG
Mount Ontake seen from Kurakake Pass on October 11, 2014.

Ontake was thought to be inactive until October 1979, when it underwent a series of explosive phreatic eruptions (VEI2), ejecting 200,000 tons of ash in total.[5]

There were minor non-explosive (VEI0) phreatic eruptions in 1991 and 2007.[5]

On Saturday, September 27, 2014, at around 11:53 a.m. Japan Standard Time (UTC +9),[6] the volcano erupted with a VEI of 3 or 4.[7][8] There were no significant earthquakes that might have warned authorities in the lead up to the phreatic eruption—caused by ground water flashing to steam in a hydrothermal explosion.[9] The Mount Ontake volcano eruption was an extremely rare phenomenon which made it difficult to take precautionary measures.[10][11] At least 40 people were injured, and another 32 were believed to be missing. The Japan Self-Defense Forces began carrying out helicopter searches for missing people after the eruption.[12] On October 7, the total confirmed death count stood at 54.[13]

Gallery

  • Ontakesan from OtakiTop 2010-8-27.JPG

    Summit and a fumarole

  • Ontakesan from kohideyama 2002 10 30.jpg

    Viewed from the SE.

  • 14 Ontakesan from kazakoshiyama 2002-5-6.jpg

    Viewed from the SEE.

  • Ontakesan from Tanohara 2010-8-27.jpg

    Viewed from the SE. (Tanohara Natural Garden)

See also

References

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External links


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  1. ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
  2. ↑ "Japan Ultra-Prominences". Peaklist.org. Retrieved March 20, 2013.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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  13. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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