Report on Tangkuban Parahu (Indonesia) — September 1986
Scientific Event Alert Network Bulletin, vol. 11, no. 9 (September 1986)
Managing Editor: Lindsay McClelland.
Tangkuban Parahu (Indonesia) Fumarole temperatures increase
Please cite this report as:
Global Volcanism Program, 1986. Report on Tangkuban Parahu (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 11:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198609-263090.
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. Gunung Tangkuban Parahu 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 Sunda caldera rim forms a prominent ridge on the western side; elsewhere the rim is largely buried by deposits of the current volcano. The dominantly small phreatic 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.