Report on Tangkuban Parahu (Indonesia) — 9 February-15 February 2022
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
9 February-15 February 2022
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2022. Report on Tangkuban Parahu (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 9 February-15 February 2022. Smithsonian Institution and US Geological Survey.
6.77°S, 107.6°E; summit elev. 2084 m
All times are local (unless otherwise noted)
PVMBG reported that during 30 January-13 February diffuse white steam-and-gas plumes from vents in Tangkuban Parahu's Ratu Crater did not rise above the crater rim. At 1143 on 12 February steam-and-gas venting from Ecoma Crater (within Ratu Crater) intensified, with bursts of emissions rising 100 m above a new vent. The emissions were less intense the next day, rising 20-60 m. Seismicity and deformation data, along with gas and temperature measurements, all indicated that the activity was the result of hydrothermal processes with no new magmatic intrusion. The Alert Level remained at 1 (on a scale of 1-4) and tourists were advised to avoid going into the crater.
Geological Summary. Gunung Tangkuban Parahu is a broad 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.