Report on Langila (Papua New Guinea) — November 1992
Bulletin of the Global Volcanism Network, vol. 17, no. 11 (November 1992)
Managing Editor: Lindsay McClelland.
Langila (Papua New Guinea) Ash and incandescent tephra; possible new lava flow
Please cite this report as:
Global Volcanism Program, 1992. Report on Langila (Papua New Guinea). In: McClelland, L (ed.), Bulletin of the Global Volcanism Network, 17:11. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.BGVN199211-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Activity at Langila's Crater 2 fluctuated in November. During periods of stronger activity, on 1-10, 15-17, and 23-26 November, moderate ash emissions occurred with eruption clouds rising several kilometres above the crater. This resulted in light ashfalls to at least 10 km downwind. At night, incandescent ejecta were visible in the eruption column. Detonations, roaring, and rumbling accompanied the activity. Between phases of stronger activity, white-grey, lightly ash-laden clouds were released less forcefully.
"For most of the month, Crater 3 released weak-to-moderate white-grey vapour-and-ash clouds. Blue vapour was also released. A brief phase of stronger activity took place 28-29 November when ash contents of the emissions were greater and eruption clouds rose several kilometres above the crater. There was an unconfirmed report of a new lava flow from Crater 3 on the 28th.
"Seismic activity appeared to reflect the visible fluctuating explosive activity at Crater 2. Up to 15 explosion earthquakes/day were recorded. During the brief phase of stronger Crater 3 activity, periods of harmonic tremor were recorded."
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.