Report on Langila (Papua New Guinea) — May 1986

Scientific Event Alert Network Bulletin, vol. 11, no. 5 (May 1986)
Managing Editor: Lindsay McClelland.

Langila (Papua New Guinea) Explosions and glow

Please cite this report as:

Global Volcanism Program, 1986. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 11:5. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198605-252010.

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Langila

Papua New Guinea

5.525°S, 148.42°E; summit elev. 1330 m

All times are local (unless otherwise noted)


"Crater 2 remained moderately active in May. White to grey emissions were reported daily with light ashfalls at the Cape Gloucester airstrip . . . on 11 days. Weak rumbling noises were reported on most days with occasional explosion sounds.

"Incandescence at the summit was reported 5-8 and 11 May. The brightest glow was on the night of 7 May. During this period of increased activity, explosion sounds were heard more frequently and 10-15 explosion shocks/day were recorded on the seismograph.

"During the last 5 days of May, activity decreased; emissions were weaker and no audible noises were produced by the volcano. There was no low-frequency tremor recorded during the month."

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.