Report on Talang (Indonesia) — 6 April-12 April 2005

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 6 April-12 April 2005
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2005. Report on Talang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 6 April-12 April 2005. Smithsonian Institution and US Geological Survey.

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0.979°S, 100.681°E; summit elev. 2575 m

All times are local (unless otherwise noted)

On 12 April during 0340-0600, an eruption at Talang produced an ash plume that rose to a height of ~1 km above the crater (~12,800 ft a.s.l.). About 4 mm of ash fell in the village of Bukit Sileh, NE of the volcano. The Alert Level was raised to 4, the highest level. News articles reported that thousands of residents near the volcano evacuated. Several days prior to the eruption, a "gray ash cloud" was visible rising to ~100 m above the volcano's summit (9,800 ft a.s.l.).

On 13 April volcanic and seismic activity decreased in comparison to the previous day. A "white-gray ash plume" rose 250 m (10,300 ft a.s.l.) above Kawah Mati crater, and gas was emitted from Gabuo Atas crater. There was a decrease in the number of deep volcanic, shallow volcanic, and explosion earthquakes. Talang remained at Alert Level 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.

Sources: Agence France-Presse (AFP), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)