Report on Sangeang Api (Indonesia) — November 1986
Scientific Event Alert Network Bulletin, vol. 11, no. 11 (November 1986)
Managing Editor: Lindsay McClelland.
Sangeang Api (Indonesia) Numerous explosions
Please cite this report as:
Global Volcanism Program, 1986. Report on Sangeang Api (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 11:11. Smithsonian Institution.
8.2°S, 119.07°E; summit elev. 1912 m
All times are local (unless otherwise noted)
During November >130 explosions were recorded from Dori Api crater. The maximum height of eruption columns was 700 m. Continued extrusion of lava was suspected but not confirmed. No volcanic earthquakes were recorded.
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 historical eruptions have been recorded since 1512, most of them during in the 20th century.
Information Contacts: VSI; ANS.