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Report on Talang (Indonesia) — February 2002

Bulletin of the Global Volcanism Network, vol. 27, no. 2 (February 2002)
Managing Editor: Richard Wunderman.

Talang (Indonesia) Small explosion earthquakes, plumes 400 m above summit during late 2001-early 2002

Please cite this report as:

Global Volcanism Program, 2002. Report on Talang (Indonesia). In: Wunderman, R (ed.), Bulletin of the Global Volcanism Network, 27:2. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN200202-261160.

Volcano Profile |  Complete Bulletin


Talang

Indonesia

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

All times are local (unless otherwise noted)


From late October 2001 through at least 10 March 2002 at Talang, seismicity was often dominated by small explosion earthquakes (table 2). Plumes reached up to 400 m above the summit, and the temperature at Batu Bajangjang hot spring, located ~5 km N of the summit, was reported at 43-71°C (table 3). The Alert Level remained at 2 through at least 10 March 2002.

Table 2. Earthquakes, tremor, and other seismic signals at Talang during 8 October 2001 through 10 March 2002. The seismograph was broken during 30 December through 20 January, so seismic information was not reported for that period. Courtesy VSI.

Date Deep volcanic (A-type) Shallow volcanic (B-type) Tectonic Small explosion Tremor
08 Oct-14 Oct 2001 11 -- 17 -- --
15 Oct-21 Oct 2001 15 1 1 -- --
22 Oct-28 Oct 2001 18 4 35 continuous --
29 Oct-04 Nov 2001 14 -- 19 continuous --
05 Nov-11 Nov 2001 14 5 14 124 29
12 Nov-18 Nov 2001 8 -- 9 continuous 22
19 Nov-25 Nov 2001 10 -- 16 233 3
26 Nov-02 Dec 2001 14 -- 17 350 4
03 Dec-09 Dec 2001 11 1 31 455 2
17 Dec-30 Dec 2001 33 3 55 -- --
04 Feb-10 Feb 2002 9 -- 6 247 40
11 Feb-17 Feb 2002 -- -- 2 265 --
18 Feb-24 Feb 2002 -- -- 1 154 --
25 Feb-03 Mar 2002 3 -- 12 156 --
03 Mar-10 Mar 2002 3 3 8 75 --

Table 3. Plume details at Talang and reported temperatures at Batu Bajangjang hot spring during 8 October 2001 through 10 March 2002. Courtesy VSI.

Date Plume details (heights are above the summit) Temperature at Batu Bajangjang hot spring
08 Oct-14 Oct 2001 White-thin, low-pressure plume to ~ 50-100 m. 45-68°C
15 Oct-28 Oct 2001 White-thin, low pressure plume to ~ 50-100 m; on 15 Oct a white-brown high-pressure plume from Kepundan Panjang and Gabuo Atas solfatara/fumarole fields rose 150-200 m; on 22 October a white-thick brown plume rose 250 m from upper Kepundan Kabuo; on 24 October a brownish-gray, high-pressure plume reached 400 m. --
29 Oct-04 Nov 2001 White-gray thin plume from Gabuo Atas solfatara/fumarole field and from Kepundan Panjang rose 150 m. 47-71°C
05 Nov-11 Nov 2001 White-thick plume from Gabuo Atas and Kepundan Panjang solfatara/fumarole field rose ~250-300 m and drifted S; at 2240 m elevation between Gabuo Atas and Sapan hot spring (NE of Kepundan Panjang) a whitish-brown thin medium-pressure plume rose ~200 m. --
12 Nov-18 Nov 2001 White-thick brownish plume from Gabuo Atas and Kepundan Panjang solfatara/fumarole fields reached 50 m and drifted S. --
19 Nov-02 Dec 2001 White-thin plume from Gabuo Atas and Kepundan Panjang solfatara/fumarole fields reached 50 m and drifted E. --
03 Dec-09 Dec 2001 White-thin plume from Gabuo Atas and Kepundan Panjang solfatara/fumarole fields rose ~50-150 m and drifted E. 43°C
17 Dec-30 Dec 2001 White-thin, low-pressure plume rose ~50 m and drifted E. --
30 Dec-20 Jan 2002 White-thin plume rose 50-100 m. 43-64°C
04 Feb-10 Mar 2002 White-thin plume rose 100-150 m. --

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.

Information Contacts: Dali Ahmad, Volcanological Survey of Indonesia (VSI), Jalan Diponegoro No. 57, Bandung 40122, Indonesia (URL: http://www.vsi.esdm.go.id/).