Hakkoda Volcano

Updated: May 21, 2024 20:01 GMT - refresh

stratovolcanoes 1585 m / 5,200 ft
Honshu (Japan), 40.66°N / 140.88°E
Current status: normal or dormant (1 out of 5)

Hakkoda (or Hakkodasan) volcano is a group of 14 stratovolcanoes and lava domes south of Mutsu Bay at the northern end of Honshu Island, Japan.
There are fumaroles and hot springs at Ido-dake and several other locations. 3 minor phreatic eruptions were documented from Jigoku-numa on the SW flank of Odake volcano from the 13th-17th centuries.

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News/Updates | Earthquakes

Typical eruption style: explosive
Hakkoda volcano eruptions: 1550 ± 100 years, 1340 ± 75, 450 AD (?), 50 BC (?), 1150 BC (?), 2250 BC (?), 2850 BC (?)

Latest nearby earthquakes

Time	Mag. / Depth	Distance / Location
May 8, 08:33 pm (GMT +9)	3.0 130 km	21 km (13 mi) to the S	Japan: EASTERN AOMORI PREF	Info

View recent quakes

Background

The cones of the Hakkoda group overly an older, 8 km wide caldera. The northern vents of the Hakkoda group located in the center of the caldera appear younger than the southern group, which buries the SE caldera wall on its SE wall.
Craters with well preserved morphologies include Hakkoda-Odake, Ido-dake, Tsurugi-dake, which has a 1 km wide explosion crater open to the north.

Eruptions of Hakkoda volcano

1997 fatalities
3 soldiers were killed by CO2 on 12 July 1997 on a training mission at the N foot of Hakkoda volcano. They had entered a depression filled by lethal concentrations of volcanogenic CO2. "In the darkness, some members of the party slipped into a depression (18 m long, 11 m wide, and 8 m deep), as did those who first tried to rescue them. The men were hospitalized on the evening of 12 July, but three lost their lives."
(Smithsonian / GVP monthly reports)