Report on Iliboleng (Indonesia) — June 1987
Scientific Event Alert Network Bulletin, vol. 12, no. 6 (June 1987)
Managing Editor: Lindsay McClelland.
Iliboleng (Indonesia) Earthquakes increase; 300-m-high plume
Please cite this report as:
Global Volcanism Program, 1987. Report on Iliboleng (Indonesia). In: McClelland, L. (ed.), Scientific Event Alert Network Bulletin, 12:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198706-264220.
8.342°S, 123.258°E; summit elev. 1659 m
All times are local (unless otherwise noted)
Since 20 June, a plume has risen as much as 300 m above the summit. The number of shallow volcanic earthquakes increased to ~20/day 20-25 June, compared to 1/day previously. No eruptive activity has been reported since November.
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.