Eruption history
VEI – Volcanic Explosivity Index: 0 = lava outpouring, 4 = like Eyjafjallajökull 2010, 6 = like Pinatubo 1991, 7 = like Tambora 1815. The scale is logarithmic – each step is about 10 times more material.
| Start | End | VEI | Vent and dating |
|---|---|---|---|
| 3 December 1898 | 6 December 1898 | 2 | Maru-yama (No. 1 crater) · Observations: Reported |
| c. 1,700 BCE | — | 2 | Maru-yama · Isotopic: 14C (calibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#285061)