Report on Dieng Volcanic Complex (Indonesia) — April 1986
Scientific Event Alert Network Bulletin, vol. 11, no. 4 (April 1986)
Managing Editor: Lindsay McClelland.
Dieng Volcanic Complex (Indonesia) Earthquakes and tremor but no change in thermal activity
Please cite this report as:
Global Volcanism Program, 1986. Report on Dieng Volcanic Complex (Indonesia) (McClelland, L., ed.). Scientific Event Alert Network Bulletin, 11:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN198604-263200
Dieng Volcanic Complex
7.2°S, 109.879°E; summit elev. 2565 m
All times are local (unless otherwise noted)
"A widely-felt earthquake occurred near Dieng on 13 April at 0747. Tremor was recorded for up to 10 minutes 14-15 April. Additional small earthquakes were recorded in the following two weeks. No changes were noted in thermal activity."
Geological Summary. The Dieng plateau in the highlands of central Java is renowned both for the variety of its volcanic scenery and as a sacred area housing Java's oldest Hindu temples, dating back to the 9th century CE. The Dieng Volcanic Complex consists of multiple stratovolcanoes and more than 20 small Pleistocene-to-Holocene craters and cones over a 6 x 14 km area. Prahu stratovolcano was truncated by a large Pleistocene caldera, which was subsequently filled by a series of cones, lava domes, and craters, many containing lakes. Lava flows cover much of the plateau, but observed activity has been restricted to minor phreatic eruptions. Gas emissions are a hazard at several craters and have caused fatalities. There are abundant thermal features and high heat flow across the area.
Information Contacts: Olas, Suratman, Suparto, Kaswanda, and A. Sudradjat, VSI.