Japan Volcano AlertsVolcanoes of Undersea Features
Volcanoes16Holocene
Confirmed eruptions50
Since 190022
HighestHollister Ridge-1,000 m
Most eruptions
18
12
5
3
3
2
2
1
1
1
1
1
0
0
0
Latest eruptions
| Volcano | Start | VEI |
|---|---|---|
| Northern EPR at 9.8°N | 2025-04-28 | 0 |
| Axial Seamount | 2015-04-23 | 0 |
| Axial Seamount | 2011-04-06 | 0 |
| Northern EPR at 9.8°N | 2005-08-16 | 0 |
| Northern EPR at 10.7°N | 2003-05-31 | 0 |
| Walvis Ridge at 33°S | 2001-11-24 | 0 |
| East Gakkel Ridge at 85°E | 1999-04-05 | 2 |
| Axial Seamount | 1998-01-25 | 0 |
| CoAxial Segment | 1993-06-26 | 0 |
| Northern EPR at 9.8°N | 1991-12-01 | 0 |
| Northern EPR at 9.8°N | 1991-01-27 | 0 |
| Southern EPR at 17.5°S (Segment K) | 1990-07-02 | 0 |
| Northern EPR at 9.8°N | 1988-07-02 | 0 |
| Cleft Segment | 1986-08-16 | 0 |
| CoAxial Segment | 1986-07-02 | 0 |
All volcanoes
| Volcano | Elev. m | Eruptions | Type |
|---|---|---|---|
| Northern EPR at 9.8°N | -2,500 | 18 | Fissure vent |
| Axial Seamount | -1,410 | 12 | Fissure vent |
| Southern EPR at 17.5°S (Segment K) | -2,566 | 5 | Fissure vent |
| Cleft Segment | -2,140 | 3 | Fissure vent |
| Southern EPR at 18.5°S (Segment I) | -2,600 | 3 | Fissure vent |
| CoAxial Segment | -2,400 | 2 | Fissure vent |
| Southern EPR at 18.2°S (Segment J) | -2,650 | 2 | Fissure vent |
| East Gakkel Ridge at 85°E | -3,800 | 1 | Fissure vent |
| Northern EPR at 10.7°N | -2,900 | 1 | Fissure vent |
| Pico Fracture Zone | -4,200 | 1 | Fissure vent |
| Southern EPR at 8°S | -2,800 | 1 | Fissure vent |
| Walvis Ridge at 33°S | -1,200 | 1 | Cone |
| East Blanco Depression | -3,000 | 0 | Fissure vent |
| Hollister Ridge | -1,000 | 0 | Fissure vent |
| Romanche Fracture Zone | -1,528 | 0 | Fissure vent |
| Udintsev Transform | -5,700 | 0 | Fissure vent |
Eruption records from the Smithsonian Global Volcanism Program; older eruptions may be missing. VEI = Volcanic Explosivity Index (0–8). For current alerts, check the official agency.