Report on Langila (Papua New Guinea) — October 1980
Scientific Event Alert Network Bulletin, vol. 5, no. 10 (October 1980)
Managing Editor: David Squires.
Langila (Papua New Guinea) Large explosions and block lava flow
Please cite this report as:
Global Volcanism Program, 1980. Report on Langila (Papua New Guinea). In: Squires, D (ed.), Scientific Event Alert Network Bulletin, 5:10. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.SEAN198010-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Langila was inspected between 1630 on 28 October and  on 29 October, following reports of increased activity. Large Vulcanian explosions took place from Crater 2 at intervals of several minutes or more and produced dark grey convoluting ash clouds reaching heights of 3-5 km. Minor ejections of incandescent lava fragments also took place, producing impact craters to a distance of at least 200 m. Crater 3 contained a body of plastic incandescent lava that was upheaved frequently by Strombolian explosions. Incandescent lava fragments were ejected to 300 m in horizontal distance. The crater was topped by a pale grey emission cloud. A blocky lava flow [first noticed on 13 October] had advanced about 2 km on a broad front from Crater 3. The lava looked similar to previous flows, which have consisted of low-silica andesite. Seismic activity (volcanic tremor and B-type events) was greatly intensified in October, necessitating an increase in seismograph attenuation of 18 decibels."
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.