Report on Langila (Papua New Guinea) — 29 July-4 August 2020
Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 29 July-4 August 2020
Managing Editor: Sally Kuhn Sennert
Please cite this report as:
Global Volcanism Program, 2020. Report on Langila (Papua New Guinea). In: Sennert, S K (ed.), Weekly Volcanic Activity Report, 29 July-4 August 2020. Smithsonian Institution and US Geological Survey.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
Based on analyses of satellite imagery and wind-model data, the Darwin VAAC reported that during 1-3 August ash plumes from Langila rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted NW and W. A thermal anomaly over the volcano was visible on 3 August. Ash plumes became diffuse later on 3 August, rising to 1.8 km (6,000 ft) a.s.l. and drifting NW.
Geologic Background. Langila, one of the most active volcanoes of New Britain, consists of a group of four small overlapping composite basaltic-andesitic cones on the lower E flank of the extinct Talawe volcano in the Cape Gloucester area of NW New Britain. A rectangular, 2.5-km-long crater is breached widely to the SE; Langila was constructed NE of the breached crater of Talawe. An extensive lava field reaches the coast on the N and NE sides of Langila. Frequent mild-to-moderate explosive eruptions, sometimes accompanied by lava flows, have been recorded since the 19th century from three active craters at the summit. The youngest and smallest crater (no. 3 crater) was formed in 1960 and has a diameter of 150 m.