Fig. 3

Cumulative magma volume erupted from Sakurajima Volcano. A red solid line represents an eruption event. A pink square shows the ranges of volume and age for a volcanic edifice which is undivided into separate eruption events. P14 is the Sakurajima-Satsuma tephra, which occurred at the beginning of Younger Kitadake stage after a long repose (Kobayashi et al. 2013). The eruption rate is apparently increasing in the recent Younger Minamidake stage