Report on Tangkubanparahu (Indonesia) — 11 September-17 September 2002
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 11 September-17 September 2002
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2002. Report on Tangkubanparahu (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 11 September-17 September 2002. Smithsonian Institution and US Geological Survey.
6.77°S, 107.6°E; summit elev. 2084 m
All times are local (unless otherwise noted)
On 2 September VSI raised the Alert Level at Tangkubanparahu from 1 to 2 (on a scale of 1-4). The number of daily earthquakes had been increasing for 2 weeks and the temperatures of Domas and Ratu craters were 2-4°C higher than normal. There were no surface changes at the volcano, but several animals from the forest near Ratu crater were found dead in the crater.
Geologic Background. Tangkubanparahu (also known as Tangkuban Perahu) is a broad shield-like stratovolcano overlooking Indonesia's former capital city of Bandung. The volcano was constructed within the 6 x 8 km Pleistocene Sunda caldera, which formed about 190,000 years ago. The volcano's low profile is the subject of legends referring to the mountain of the "upturned boat." The rim of Sunda caldera forms a prominent ridge on the western side; elsewhere the caldera rim is largely buried by deposits of Tangkubanparahu volcano. The dominantly small phreatic historical eruptions recorded since the 19th century have originated from several nested craters within an elliptical 1 x 1.5 km summit depression.