Report on Langila (Papua New Guinea) — January 1986

Scientific Event Alert Network Bulletin, vol. 11, no. 1 (January 1986)
Managing Editor: Lindsay McClelland

Langila (Papua New Guinea) Explosions and tremor

Please cite this report as:

Global Volcanism Program, 1986. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Scientific Event Alert Network Bulletin, 11:1. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198601-252010.

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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)


"Moderate activity, which had begun in late December 1985 (10:12), continued for the first half of January. Numerous explosions from Crater 2 were seen, and there were daily reports of rumbling sounds at the observation post [9] km N of the summit. A light ashfall was reported at the observation post on 3 January. Occasional incandescence from Crater 2 was seen at night until the 13th. Low-frequency harmonic tremor was recorded on the 2nd, 3rd, and 7th. Numerous explosions (3-30/day) were recorded throughout January.

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.