Report on Tangkubanparahu (Indonesia) — 13 April-19 April 2005
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 13 April-19 April 2005
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2005. Report on Tangkubanparahu (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 13 April-19 April 2005. Smithsonian Institution and US Geological Survey.
6.77°S, 107.6°E; summit elev. 2084 m
All times are local (unless otherwise noted)
At Tangkubanparahu "white thin smoke" was emitted from Upas Baru crater and Ratu crater on 14 April, and from Upas Baru crater on 15 April. On 14 and 15 April shallow and deep volcanic earthquakes were recorded. During this time visitors were banned from the volcano. On 19 April the Alert Level was reduced from 3 to 2 (on a scale of 1-4) and the volcano was opened to the public, but access was restricted around Ratu crater and not permitted at the other craters.
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.