Report on Raung (Indonesia) — 29 May-4 June 2002
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 29 May-4 June 2002
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2002. Report on Raung (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 29 May-4 June 2002. Smithsonian Institution and US Geological Survey.
8.119°S, 114.056°E; summit elev. 3260 m
All times are local (unless otherwise noted)
A pilot reported observing an ash plume that was emitted from Raung on 2 June at 1625. The plume rose to a height of ~4.5 km a.s.l. and drifted to the S. According to the Darwin VAAC, ash was not visible on satellite imagery.
Geologic Background. Raung, one of Java's most active volcanoes, is a massive stratovolcano in easternmost Java that was constructed SW of the rim of Ijen caldera. The unvegetated summit is truncated by a dramatic steep-walled, 2-km-wide caldera that has been the site of frequent historical eruptions. A prehistoric collapse of Gunung Gadung on the W flank produced a large debris avalanche that traveled 79 km, reaching nearly to the Indian Ocean. Raung contains several centers constructed along a NE-SW line, with Gunung Suket and Gunung Gadung stratovolcanoes being located to the NE and W, respectively.