Report on Galunggung (Indonesia) — September 1982

Scientific Event Alert Network Bulletin, vol. 7, no. 9 (September 1982)
Managing Editor: Lindsay McClelland.

Galunggung (Indonesia) Occasional explosions continue

Please cite this report as:

Global Volcanism Program, 1982. Report on Galunggung (Indonesia). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 7:9. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198209-263140.

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Galunggung

Indonesia

7.25°S, 108.058°E; summit elev. 2168 m

All times are local (unless otherwise noted)


Occasional eruption clouds could be seen on satellite imagery in September. Explosive activity that probably began about 0000-0030 on 19 September, produced a moderate-sized plume that appeared on an image at 0100. Six hours later, the plume was considerably more diffuse and feeding had stopped. At 1900 on the 22nd, an image showed an eruption cloud beginning to emerge from the volcano. No other explosions have been reported through the end of September.

Geologic Background. The forested slopes Galunggung in western Java are cut by a large horseshoe-shaped caldera breached to the SE that has served to channel the products of recent eruptions in that direction. The "Ten Thousand Hills of Tasikmalaya" dotting the plain below the volcano are debris-avalanche hummocks from the collapse that formed the breached caldera about 4200 years ago. Although historical eruptions, restricted to the central vent near the caldera headwall, have been infrequent, they have caused much devastation. The first historical eruption in 1822 produced pyroclastic flows and lahars that killed over 4000 people. More recently, a strong explosive eruption during 1982-1983 caused severe economic disruption to populated areas near the volcano.

Information Contacts: M. Matson, D. Haller, and J. Hawkins, NOAA.