Report on Kuchinoerabujima (Japan) — September 1980

Scientific Event Alert Network Bulletin, vol. 5, no. 9 (September 1980)
Managing Editor: David Squires.

Kuchinoerabujima (Japan) Weak ash emission

Please cite this report as:

Global Volcanism Program, 1980. Report on Kuchinoerabujima (Japan). In: Squires, D (ed.), Scientific Event Alert Network Bulletin, 5:9. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198009-282050.

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Kuchinoerabujima

Japan

30.443°N, 130.218°E; summit elev. 639 m

All times are local (unless otherwise noted)


After four years of quiet, a brief, weak explosion produced a [2-3-km-high] ash cloud on 28 September at 0510. Ash fell on the sea [SW] of the volcano, missing the homes of the 12 x 5 km island's 300 residents. Activity after the explosion was limited to emission of white vapor through the end of September. Minor ash explosions have occurred in seven different years since 1966.

Geologic Background. A group of young stratovolcanoes forms the eastern end of the irregularly shaped island of Kuchinoerabujima in the northern Ryukyu Islands, 15 km west of Yakushima. The Furudake, Shindake, and Noikeyama cones were erupted from south to north, respectively, forming a composite cone with multiple craters. The youngest cone, centrally-located Shintake, formed after the NW side of Furutake was breached by an explosion. All historical eruptions have occurred from Shintake, although a lava flow from the S flank of Furutake that reached the coast has a very fresh morphology. Frequent explosive eruptions have taken place from Shintake since 1840; the largest of these was in December 1933. Several villages on the 4 x 12 km island are located within a few kilometers of the active crater and have suffered damage from eruptions.

Information Contacts: JMA, Tokyo.