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Случайные фотографии
News
Wednesday, Jul 01, 2015
После небольшой взрыв в районе гидротермальных Owakudani и повышенной сейсмической активности уровень вулкан оповещения был повышен до 3 (по шкале от 1-5) на 30 июня. ... [подробнее]
Deformation at Hakone volcano (Owakudani valley in circle) during 7-21 May based on interference SAR data (GSI)
Friday, May 22, 2015
Волнения в долине Owakudani продолжается. Фумарольной активности резко увеличилось. Земли подняли до 15 см в течение 7-21 мая, или до 20 см по сравнению с начала октября прошлого года. [подробнее]
 

Hakone вулкан

Комплекс вулкана 1438 m / 4,718 ft
Хонсю, Япония, 35.23°N / 139.02°E
Текущее состояние: normal or dormant (1 из 5) | Reports
Hakone volcano books
Last update: 2 Oct 2018
Типичный извержения стиль: phreatic explosions
Hakone Вулкан-извержения: 1170 AD ± 100 years (radiocarbon dated), 50 BC (?), 1050 BC (?), 1200 BC (?), 1400 BC ± 100 years, 3700 BC ± 100 years, 6000 BC ± 100 years Нет недавних землетрясений
ВремяМагнитный / ГлубинаРасстояниеМестоположение
Hakone volcano is located 80 km SW of Tokyo. It is a massive stratovolcano truncated by 2 overlapping calderas, the largest being 11 x 10 km wide. It contains several younger vents, mostly lava domes, on a SW-NE trend cutting through the center of the caldera. The Kami-yama stratovolcano, the youngest of these, forms the high point of the volcano.
The calderas are breached to the east by the Haya-kawa canyon. The scenic Lake Ashi (Ashinoko) was created by a phreatic eruption 3000 yeas ago, which followed the collapse of the NW flank of the largest and youngest of the lava domes and dammed the Haya-kawa valley.
The last activity of Hakone volcano was ca. 800 years ago and consisted in phreatic explosions.
Lake Ashi and other major thermal areas in the caldera are a tourist destination SW of Tokyo.

Справочная информация:

The Hakone volcano calderas were formed as a result of 2 major explosive eruptions about 180,000 and 49,000-60,000 years ago.
Dome growth after the caldera formation occurred progressively to the south. Ōwakudani (大涌谷, lit. "Great Boiling Valley") is a valley with intense hydrothermal activity and the location of several phreatic explosions in the past.
The latest magmatic eruption from Hakone was ca. 2900 years ago and produced a pyroclastic flow and a lava dome in the explosion crater. Phreatic eruptions have last occurred in the 12-13th centuries AD. Seismic swarms occurred at Hakone during the 20th century.
(Source: Smithsonian / GVP volcano information)

1991 seismic swarm
On 22 April 1991, 300 earthquakes were recorded 5 km beneath the central part of the caldera, but no eruption has followed.

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