Report on Agung (Indonesia) — 12 June-18 June 2019
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 12 June-18 June 2019
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2019. Report on Agung (Indonesia). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 12 June-18 June 2019. Smithsonian Institution and US Geological Survey.
8.343°S, 115.508°E; summit elev. 2997 m
All times are local (unless otherwise noted)
PVMBG reported that an eruption at Agung, recorded by the seismic network at 0138 on 13 June, ejected incandescent material onto the flanks. The Darwin VAAC stated that ash plumes rose to altitudes of 5.5 and 9.1 km (18,000 and 30,000 ft) a.s.l. and drifted W and SW, respectively, based on webcam views and satellite data. By 0635 the ash plume had detached and by 1505 it was about 370 km S of Agung. The Alert Level remained at 3 (on a scale of 1-4) with the exclusion zone set at a 4 km radius.
Geologic Background. Symmetrical Agung stratovolcano, Bali's highest and most sacred mountain, towers over the eastern end of the island. The volcano, whose name means "Paramount," rises above the SE caldera rim of neighboring Batur volcano, and the northern and southern flanks extend to the coast. The summit area extends 1.5 km E-W, with the high point on the W and a steep-walled 800-m-wide crater on the E. The Pawon cone is located low on the SE flank. Only a few eruptions dating back to the early 19th century have been recorded in historical time. The 1963-64 eruption, one of the largest in the 20th century, produced voluminous ashfall along with devastating pyroclastic flows and lahars that caused extensive damage and many fatalities.