Report on Batu Tara (Indonesia) — 15 September-21 September 2010
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 15 September-21 September 2010
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2010. Report on Batu Tara (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 15 September-21 September 2010. Smithsonian Institution and US Geological Survey.
7.791°S, 123.585°E; summit elev. 633 m
All times are local (unless otherwise noted)
Based on analyses of satellite imagery, the Darwin VAAC reported that during 18-20 September ash plumes from Batu Tara rose to an altitude of 1.5 km (5,000 ft) a.s.l. and drifted 35-95 km W and NW.
Geological Summary. The small isolated island of Batu Tara in the Flores Sea about 50 km N of Lembata (fomerly Lomblen) Island contains a scarp on the eastern side similar to the Sciara del Fuoco of Italy's Stromboli volcano. Vegetation covers the flanks to within 50 m of the summit. Batu Tara lies north of the main volcanic arc and is noted for its potassic leucite-bearing basanitic and tephritic rocks. The first historical eruption, during 1847-52, produced explosions and a lava flow.