Report on Langila (Papua New Guinea) — January 1984
Scientific Event Alert Network Bulletin, vol. 9, no. 1 (January 1984)
Managing Editor: Lindsay McClelland.
Langila (Papua New Guinea) Vulcanian explosions; ashfalls on coast
Please cite this report as:
Global Volcanism Program, 1984. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 9:1. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198401-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Activity remained high at Crater 2, but Vulcanian explosions replaced the more continuous activity that produced the lava flow on the NE flank in December. For most of the time, Crater 2 produced moderate amounts of white to brown ash-laden vapour, accompanied by discontinuous rumbling and explosion sounds, while the seismic station at Cape Gloucester airstrip, 9 km away, recorded discontinuous tremors and large explosion earthquakes. Peaks of activity occurred on 7, 12, and 25 January with emission of columns of thick dark tephra-laden vapour to heights of 1.5-2.5 km above the crater. Large blocks were ejected as far as 2 km from the vent by the more powerful explosions, and ashfalls were experienced on the coast, 10 km downwind. Activity at Crater 3 was confined to the emission of white and blue vapours."
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. Lowenstein, RVO.