Report on Tandikat-Singgalang (Indonesia) — August 2003
Bulletin of the Global Volcanism Network, vol. 28, no. 8 (August 2003)
Managing Editor: Edward Venzke.
Tandikat-Singgalang (Indonesia) Increased seismicity during January 2003
Please cite this report as:
Global Volcanism Program, 2003. Report on Tandikat-Singgalang (Indonesia) (Venzke, E., ed.). Bulletin of the Global Volcanism Network, 28:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN200308-261150
Tandikat-Singgalang
Indonesia
0.4311°S, 100.3192°E; summit elev. 2879 m
All times are local (unless otherwise noted)
Seismic activity at Tandikat increased significantly over the week of 20-26 January 2003. One felt earthquake (III on the MMI scale) on 20 January was followed by a significant number of deep volcanic earthquakes. The number of both volcanic and tectonic earthquakes resulted in the volcano's hazard status being upgraded to Alert Level 2 on 25 January. Seismic activity decreased over the period 27 January-16 February (table 1), but remained at an elevated level.
Table 1. Seismicity recorded at Tandikat, 13 January-16 February 2003. Data courtesy of VSI.
| Date | Shallow Volcanic | Deep Volcanic | Emission | Tremor | Tectonic |
| 13 Jan-19 Jan 2002 | -- | 6 | -- | -- | 22 |
| 20 Jan-26 Jan 2002 | 1 | 149 | -- | 2 | 174 |
| 27 Jan-02 Feb 2002 | -- | 46 | 4 | 1 | 54 |
| 03 Feb-09 Feb 2002 | -- | 24 | 3 | -- | 18 |
| 10 Feb-16 Feb 2002 | -- | 19 | 5 | -- | 15 |
Geological Summary. This volcanic complex is dominated by the Singgalang stratovolcano and the smaller Tandikat edifice ~4.5 km SSW. They are located ~15 km WSW across the Bukittinggi plain from Marapi volcano. No eruptions are known from Singgalang, which hosts a lake in the summit crater. The summit of Tandikat has a partially eroded 1.2-km-wide crater containing a large central cone capped by a 360-m-wide crater containing a small lake. The only known eruptions are from Tandikat; three events reported in the late 19th and early 20th centuries produced minor explosive activity.
Information Contacts: Dali Ahmad, Volcanological Survey of Indonesia (VSI), Jalan Diponegoro No. 57, Bandung 40122, Indonesia (URL: http://www.vsi. esdm.go.id/).
