Report on Kaba (Indonesia) — 14 October-20 October 2009
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 14 October-20 October 2009
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2009. Report on Kaba (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 14 October-20 October 2009. Smithsonian Institution and US Geological Survey.
3.522°S, 102.615°E; summit elev. 1940 m
All times are local (unless otherwise noted)
On 20 October, CVGHM reported that seismic activity from Kaba increased in August and remained elevated in September and October. Inflation was also detected. When weather permitted, diffuse white plumes were seen rising 25-50 m above the crater rim and drifting E. Based on the deformation and increased seismicity, CVGHN raised the Alert Level to 2 (on a scale of 1-4).
Geologic Background. Kaba, a twin volcano with Mount Hitam, has an elongated summit crater complex dominated by three large historically active craters trending ENE from the summit to the upper NE flank. The SW-most crater of Gunung Kaba, named Hidup (or Lama), is the largest. Most historical eruptions have affected only the summit area. They mostly originated from the central summit craters, although the upper-NE flank crater Kawah Vogelsang also produced explosions during the 19th and 20th centuries.