Figure 4
From: Ten-year helium anomaly prior to the 2014 Mt Ontake eruption
Schematic diagram of hydro-volcanic eruption of Mt. Ontake in September 2014.
The increased input of magmatic volatiles resulted in slow pressurization of the volcanic conduit leading to the event. Depth scale was estimated from ref. 27. Original figure was created by Michelle Laithier of Université du Québec à Montréal.
