Report on Tandikat-Singgalang (Indonesia) — 22 January-28 January 2003
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 22 January-28 January 2003
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2003. Report on Tandikat-Singgalang (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 22 January-28 January 2003. Smithsonian Institution and US Geological Survey.
0.39°S, 100.331°E; summit elev. 2854 m
All times are local (unless otherwise noted)
On 20 January a felt earthquake occurred at Tandikat, which was followed by a significant number of volcanic earthquakes. This led VSI to raise the Alert Level to 2 (on a scale of 1-4) on 25 January.
Geologic Background. Tandikat and its twin volcano to the NNE, Singgalang, lie across the Bukittinggi plain from Marapi volcano. Volcanic activity has migrated to the SSW from the higher Singgalang, and only Tandikat has had historical activity. 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 with a small crater lake. The only three reported historical eruptions, in the late 19th and early 20th centuries, produced only mild explosive activity.