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Report on Dieng Volcanic Complex (Indonesia) — 8 June-14 June 2011


Dieng Volcanic Complex

Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 8 June-14 June 2011
Managing Editor: Sally Sennert.

Please cite this report as:

Global Volcanism Program, 2011. Report on Dieng Volcanic Complex (Indonesia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 8 June-14 June 2011. Smithsonian Institution and US Geological Survey.

Weekly Report (8 June-14 June 2011)

Dieng Volcanic Complex

Indonesia

7.2°S, 109.879°E; summit elev. 2565 m

All times are local (unless otherwise noted)


CVGHM reported that during 31 May-10 June carbon dioxide gas emissions declined from Timbang, a cone that is part of the Dieng Volcanic Complex. Seismicity decreased during 5-7 June and was not detected during 8-10 June. White plumes were not observed. On 10 June the Alert Level was lowered to 2 (on a scale of 1-4).

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.

Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)