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Wednesday, Jul 01, 2015
Following a small explosion in the Owakudani hydrothermal area and increased seismic activity, the alert level of the volcano was raised to 3 (on a scale of 1-5) on 30 June. ... [more]
Deformation at Hakone volcano (Owakudani valley in circle) during 7-21 May based on interference SAR data (GSI)
Friday, May 22, 2015
Unrest at the Owakudani valley continues. Fumarolic activity has increased drastically. Ground has lifted by up to 15 cm during 7-21 May, or up to 20 cm when compared to early October last year. [more]
 

Hakone volcano eruptions

complex volcano 1438 m / 4,718 ft
Honshu, Japan, 35.23°N / 139.02°E
Eruption list: 1170 AD ± 100 years (radiocarbon dated), 50 BC (?), 1050 BC (?), 1200 BC (?), 1400 BC ± 100 years, 3700 BC ± 100 years, 6000 BC ± 100 years


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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