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News
Thursday, Dec 18, 2014
Белый пар перья были замечены на прошлой неделе. Яма сообщает сейсмической активности оставался низким, но поддерживает уровень оповещения 3, как внезапные взрывы фреатический может произойти снова. [подробнее]
Friday, Nov 14, 2014
JMA сообщили, что облачный покров часто мешает визуальные наблюдения Ontakesan в течение 5-11 ноября; белые перья превысил 200-300 м на обод кратера и дрейфовал NE, E и SE. ... [подробнее]
 

Ontake-san вулкан

Комплекс вулкана 3063 m / 10,049 ft
Хонсю, Япония, 35.89°N / 137.48°E
Текущее состояние: normal or dormant (1 из 5)
Ontake-san Веб-камеры / данные в реальном времени | Reports
Ontake-san volcano books
Last update: 2 Oct 2018 (steaming, low seismic activity)
Типичный извержения стиль: explosive
Ontake-san Вулкан-извержения: 27 Sep 2014, 2007, 1979-80, 774 AD Mt.Ontake, viewed from Kuzo Pass of Route 361 (pictrure: Atsushi Ueda / Wiki Commons) Нет недавних землетрясений
ВремяМагнитный / ГлубинаРасстояниеМестоположение
On-take, or correctly Ontake-san (御嶽山), is a massive stratovolcano and the second highest in Japan. It is located at the southern end of the Northern Japan Alps.
Its first historic eruption occurred in 1979. A landslide in 1984 was not related to an eruption and produced a debris avalanche and lahar running down valleys south and east of the volcano.
On-take volcano is one of the holy mountains of Japan and the destination for religious pilgrimage since 1792.

Справочная информация:

On-take's summit cone was built in a largely buried 4 x 5 km caldera. It lies at the southern end of the Norikura volcanic zone, which extends northward through Norikura volcano to Yake-dake volcano.
The older volcanic complex of Ontake consists of at least 4 major stratovolcanoes that were constructed from about 680,000 to about 420,000 years ago, after which On-take was inactive for more than 300,000 years.
The broad, elongated summit of the younger edifice is cut by a series of small explosion craters along a NNE-trending line. Several phreatic eruptions from On-take post-date the roughly 7300-year-old Akahoya tephra from Kikai caldera.
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Source: On-take volcano information from Smithsonian / GVP

Ontake-san Фото:



1979 first historic eruption
Around 5:00 on 28 October 1979 the first historic eruption of On-take volcano occurred from a fissure on the southwestern slope of the main peak, Kengamine.
The eruption produced a tephra column of 1500 meters and there was ashfall in Maebashi City 150 km away. A 30 m diameter crater and 9 small craters on a NW-SE lline were formed above the eruptive fissure.

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