Report on Talang (Indonesia) — 26 September-2 October 2001
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 26 September-2 October 2001
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2001. Report on Talang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 26 September-2 October 2001. Smithsonian Institution and US Geological Survey.
0.979°S, 100.681°E; summit elev. 2575 m
All times are local (unless otherwise noted)
During 24-30 September volcanic activity increased at Talang volcano. Observers noted that on 25 September during 1722-1838 a thick white-brownish plume with high gas pressure rose 200-350 m above the volcano. Personnel at the observatory could smell sulfur during the evening. In comparison to measurements in 2000, temperatures increased in 2001 at Batu Bajanjang hot spring (from 40-60°C to 45-66°C), Gabuo Atas fumarole field (from 98-99°C to 111-114°C), and Gabuo Bawah fumarole field (from 96-99°C to 100-101°C). In addition, the water level at Batu Bajanjang hot spring decreased drastically. Talang was at Alert Level 2 (on a scale of 1-4).
Geologic Background. Talang, which forms a twin volcano with the extinct Pasar Arbaa volcano, lies ESE of the major city of Padang and rises NW of Dibawah Lake. Talang has two crater lakes on its flanks; the largest of these is 1 x 2 km wide Danau Talang. The summit exhibits fumarolic activity, but which lacks a crater. Historical eruptions have mostly involved small-to-moderate explosive activity first documented in the 19th century that originated from a series of small craters in a valley on the upper NE flank.