Possibility of New Volcanic Activity at Ibusuki Volcanic Field, Kyushu, Japan

Abstract

Ibusuki volcanic field, one of the promising geothermal fields in the southern Kyushu consists of Ata caldera, central cones and Kaimon-dake stratovolcano, which erupted one after another from the latest Pleistocene to ca. 1.000 years ago. The comparison of magma composition and rate of thermal energy release about the Kaimon-dake volcano with those of the central cones, indicates a possibility of presence of enough thermal energy in this volcanic field, which might be released by a coming volcanic eruption in the near future.