Hakone Volcano | John Seach


Honshu, Japan

35.22 N, 139.02 E
summit elevation 1438 m
Complex volcano

Hakone volcano is located 80 km SW of Tokyo, Japan.

The volcano comprises two overlapping calderas, the largest being 11 x 10 km wide. Lake Ashi (Ashinoko) was created by a phreatic eruption 3000 yeas ago.

1991 Earthquake Swarm
On 22nd April 1991 a swarm of 300 earthquakes was recorded 5 km beneath the central part of the caldera. Fumaroles and hot springs are found at the volcano, but there has not been an eruption for 3000 years.

Further Reading
Aki, Y. and Hirano, T., 1970. The geothermal system of the Hakone volcano. Geothermics, 2, pp.1157-1166.

Kuno, H., 1950. Petrology of Hakone volcano and the adjacent areas, Japan. Geological Society of America Bulletin, 61(9), pp.957-1020.

Hakone Volcano Eruptions

950 BC, 1150 BC, 5060 BC