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Report on Iliboleng (Indonesia) — July 1989

Scientific Event Alert Network Bulletin, vol. 14, no. 7 (July 1989)
Managing Editor: Lindsay McClelland.

Iliboleng (Indonesia) Fumarolic emissions; felt earthquake

Please cite this report as:

Global Volcanism Program, 1989. Report on Iliboleng (Indonesia). In: McClelland, L. (ed.), Scientific Event Alert Network Bulletin, 14:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198907-264220.

Volcano Profile |  Complete Bulletin



8.342°S, 123.258°E; summit elev. 1659 m

All times are local (unless otherwise noted)

In July, fumarole temperatures in the crater were 60-70°C. On 15 July, an MM II earthquake was felt. The number and types of earthquakes recorded were: 131 distant tectonic, three local tectonic, two volcanic A-type, and 144 volcanic B-type. The volcano's level of activity is slightly higher than normal.

Geologic Background. Iliboleng stratovolcano was constructed at the SE end of Adonara Island across a narrow strait from Lomblen Island. The volcano is capped by multiple, partially overlapping summit craters. Lava flows modify its profile, and a cone low on the SE flank, Balile, has also produced lava flows. Historical eruptions, first recorded in 1885, have consisted of moderate explosive activity, with lava flows accompanying only the 1888 eruption.

Information Contacts: VSI.