Special issue "Understanding phreatic eruptions - recent observations of Kusatsu-Shirane volcano and equivalents -".

The phreatic eruption is one of the volcanic eruption styles triggered by the rapid vaporization of heated fluids at shallow depth without the involvement of juvenile magma (e.g., Stix and deMoor [23]). 10.1186/s40623-021-01468-3 5 Kataoka KS, Tsunematsu K, Matsumoto T. Crisis hazard assessment for snow-related lahars from an unforeseen new vent eruption: the 2018 eruption of Kusatsu-Shirane volcano, Japan. Papers on the Kusatsu-Shirane volcano Kusatsu-Shirane volcano is an active dacite-andesite Quaternary volcano located in Gunma Prefecture, Central Japan. After the onset of the 2010 phreatic eruption of the Turrialba volcano, the underlying geothermal system changed as seen from the significant increase in the fumarole output at the Turrialba volcano. [Extracted from the article]