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Report on Kirishimayama (Japan) — August 1995

Bulletin of the Global Volcanism Network, vol. 20, no. 8 (August 1995)
Managing Editor: Richard Wunderman.

Kirishimayama (Japan) Seismicity increased in late August

Please cite this report as:

Global Volcanism Program, 1995. Report on Kirishimayama (Japan). In: Wunderman, R. (ed.), Bulletin of the Global Volcanism Network, 20:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199508-282090.

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Kirishimayama

Japan

31.934°N, 130.862°E; summit elev. 1700 m

All times are local (unless otherwise noted)


During 25-30 August there was an increase in seismicity near Shinmoe-dake; 126 earthquakes on the 26th were recorded 1.7 km SW. The maximum seismic amplitude of 3.2 µm occurred on the 30th. In total, 463 events were recorded in August.

Geologic Background. Kirishimayama is a large group of more than 20 Quaternary volcanoes located north of Kagoshima Bay. The late-Pleistocene to Holocene dominantly andesitic group consists of stratovolcanoes, pyroclastic cones, maars, and underlying shield volcanoes located over an area of 20 x 30 km. The larger stratovolcanoes are scattered throughout the field, with the centrally located Karakunidake being the highest. Onamiike and Miike, the two largest maars, are located SW of Karakunidake and at its far eastern end, respectively. Holocene eruptions have been concentrated along an E-W line of vents from Miike to Ohachi, and at Shinmoedake to the NE. Frequent small-to-moderate explosive eruptions have been recorded since the 8th century.

Information Contacts: JMA.