Report on Papandayan (Indonesia) — 15 June-21 June 2005
Smithsonian / US Geological Survey Weekly Volcanic Activity Report,
15 June-21 June 2005
Managing Editor: Gari Mayberry
Please cite this report as:
Global Volcanism Program, 2005. Report on Papandayan (Indonesia). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 15 June-21 June 2005. Smithsonian Institution and US Geological Survey.
7.32°S, 107.73°E; summit elev. 2665 m
All times are local (unless otherwise noted)
On 16 June, DVGHM raised the Alert Level at Papandayan from 1 to 2 (on a scale of 1-4) due to increased activity at the volcano. Beginning in early June 2005 the number of volcanic earthquakes increased in comparison to the previous months and the temperatures of fumaroles increased 3-9 degrees C above normal levels. People were not permitted to visit Mas and Baru craters.
Geological Summary. Papandayan is a complex stratovolcano with four large summit craters, the youngest of which was breached to the NE by collapse during a brief eruption in 1772 and contains active fumarole fields. The broad 1.1-km-wide, flat-floored Alun-Alun crater truncates the summit of Papandayan, and Gunung Puntang to the north gives a twin-peaked appearance. Several episodes of collapse have created an irregular profile and produced debris avalanches that have impacted lowland areas. A sulfur-encrusted fumarole field occupies historically active Kawah Mas ("Golden Crater"). After its first historical eruption in 1772, in which collapse of the NE flank produced a catastrophic debris avalanche that destroyed 40 villages and killed nearly 3000 people, only small phreatic eruptions had occurred prior to an explosive eruption that began in November 2002.