Report on Sangeang Api (Indonesia) — August 1987
Scientific Event Alert Network Bulletin, vol. 12, no. 8 (August 1987)
Managing Editor: Lindsay McClelland.
Sangeang Api (Indonesia) Small explosions continue
Please cite this report as:
Global Volcanism Program, 1987. Report on Sangeang Api (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 12:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198708-264050.
8.2°S, 119.07°E; summit elev. 1912 m
All times are local (unless otherwise noted)
The eruption . . . continued in August, with ~25 explosions/day ejecting plumes to ~600 m above the crater rim. A seismometer 5 km from the summit recorded no earthquakes accompanying the explosions.
Geologic Background. Sangeang Api volcano, one of the most active in the Lesser Sunda Islands, forms a small 13-km-wide island off the NE coast of Sumbawa Island. Two large trachybasaltic-to-tranchyandesitic volcanic cones, Doro Api and Doro Mantoi, were constructed in the center and on the eastern rim, respectively, of an older, largely obscured caldera. Flank vents occur on the south side of Doro Mantoi and near the northern coast. Intermittent eruptions have been recorded since 1512, most of them during in the 20th century.
Information Contacts: VSI.