Japan · Stratovolcano
Minami-Hiyoshi Seamount
Minami-Hiyoshi
- Type
- Stratovolcano
- Elevation
- 107m (submarine)
- Last eruption
- 1975
- Type
- Stratovolcano
- Country
- Japan
- Region
- Northwestern Pacific / Mariana Volcanic Arc
- Elevation
- 107m (submarine)
- Coordinates
- 23.500, 141.935
- Last eruption
- 1975
- Tectonic setting
- Subduction zone / Crustal thickness unknown
- Landform
- Composite
- Major rock type
- Trachyandesite / Basaltic trachyandesite
Geological summary
Periodic water discoloration and water-spouting have been reported over the Minami-Hiyoshi submarine volcano since 1975, when detonation sounds and an explosion were also reported. It lies near the SE end of a coalescing chain of youthful seamounts, and is the only vent with recorded activity. The reported depth of the summit of the trachyandesitic volcano has varied between 274 and 30 m. The morphologically youthful seamounts Kita-Hiyoshi and Naka-Hiyoshi lie to the NW, and Ko-Hiyoshi to the SE.
Eruption history
6 recordedGlossarySummary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
Detailed timeline
- 1996VEI 0Method not stated1996-01-11 – 1996-01-12
- 1992VEI 0Method not stated1992-02-12 – 1992-03-04
- 1978VEI 0Method not stated1978-01-26 – 1978-03-24
- 1976VEI 0Method not stated1976-02-16 – end unknown
- 1976VEI 0Method not stated1976-12-20 – 1977-03-28Hiyoshi-Okinoba (also 23.48 N 141.67 E)
- 1975VEI 0Observed1975-08-25 – end unknown23.50 N 141.92 E
Nearby volcanoes
External links
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