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 |
|---|---|---|---|
| 1550 ± 100 years | — | 1 | SW flank of O-dake (Jigoku-numa) · Isotopic: 14C (calibrated) |
| 1340 ± 75 years | — | 1 | SW flank of O-dake (Jigoku-numa) · Isotopic: 14C (calibrated) |
| c. 450 | — | 1 | O-dake · Isotopic: 14C (calibrated) |
| c. 50 BCE | — | 1 | O-dake · Isotopic: 14C (calibrated) |
| c. 1,150 BCE | — | 1 | O-dake · Isotopic: 14C (calibrated) |
| c. 2,250 BCE | — | 3 | O-dake · Isotopic: 14C (calibrated) |
| c. 2,850 BCE | — | 2 | O-dake · Isotopic: 14C (calibrated) |
Data: Global Volcanism Program, Smithsonian Institution (#283280)