Report on Langila (Papua New Guinea) — January 1983
Scientific Event Alert Network Bulletin, vol. 8, no. 1 (January 1983)
Managing Editor: Lindsay McClelland.
Langila (Papua New Guinea) Several Vulcanian explosions per day
Please cite this report as:
Global Volcanism Program, 1983. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 8:1. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198301-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Volcanic activity increased markedly in January and was concentrated in Crater 2. Several Vulcanian explosions were recorded every day. The most violent, 11-14 and 22-24 January, ejected incandescent boulders and tephra, illuminating the dark ash-laden column and setting fire to vegetation on the volcano's flanks. Consecutive ashfalls were blown SE over unpopulated areas. Crater 3, meanwhile, was quietly exhaling weak white vapours. In the sub-continuous seismic background, each discrete explosion was recorded as a sharp, large-amplitude event with a period of 1.5 Hz."
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 eastern flank of the extinct Talawe volcano. Talawe is the highest volcano in the Cape Gloucester area of NW New Britain. A rectangular, 2.5-km-long crater is breached widely to the SE; Langila volcano was constructed NE of the breached crater of Talawe. An extensive lava field reaches the coast on the north 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 of Langila. The youngest and smallest crater (no. 3 crater) was formed in 1960 and has a diameter of 150 m.
Information Contacts: P. de Saint Ours and B. Talai, RVO.