Report on Langila (Papua New Guinea) — August 1981
Scientific Event Alert Network Bulletin, vol. 6, no. 8 (August 1981)
Managing Editor: Lindsay McClelland
Langila (Papua New Guinea) Ash and incandescent tephra ejection, then explosions and seismicity decline
Please cite this report as:
Global Volcanism Program, 1981. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 6:8. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198108-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Eruptive activity at Crater 2 declined near the middle of August; frequent Vulcanian explosions and periods of ash emission gave way to white and blue vapour emission occasionally punctuated by intervals of brown or grey ash emission. Ashfalls were noted at coastal locations about 10 km N and NW of the volcano until 14 August. Ejections of incandescent material were seen on 6, 7, 8, and 14 August. Sounds of detonations, rumbling, and roaring were heard during the first half of the month. Crater 3 released white vapours throughout August, and blue emissions were seen rarely in the second half of the month. Seismic activity declined from a peak reached near the end of July, but the character of the activity was unchanged."
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: C. McKee, RVO.