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Report on Tangkubanparahu (Indonesia) — September 1986

Scientific Event Alert Network Bulletin, vol. 11, no. 9 (September 1986)
Managing Editor: Lindsay McClelland.

Tangkubanparahu (Indonesia) Fumarole temperatures increase

Please cite this report as:

Global Volcanism Program, 1986. Report on Tangkubanparahu (Indonesia). In: McClelland, L. (ed.), Scientific Event Alert Network Bulletin, 11:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198609-263090.

Volcano Profile |  Complete Bulletin



6.77°S, 107.6°E; summit elev. 2084 m

All times are local (unless otherwise noted)

"The only significant changes . . . during September were an increase in fumarole temperatures. As of 20 September, fumarole temperatures in Kawah Ratu crater had risen from their normal 97 to ~112°C, and had increased further in Kawah Baru crater to 189°C (from 161°C in April). No changes in seismicity or other activity were observed."

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.

Information Contacts: L. Pardyanto, Olas, Kaswanda, Suratman, A. Sudradjat, and T. Casadevall, VSI.