Report on Langila (Papua New Guinea) — March 1993
Bulletin of the Global Volcanism Network, vol. 18, no. 3 (March 1993)
Managing Editor: Edward Venzke
Langila (Papua New Guinea) Explosions send incandescent material 80 m above summit
Please cite this report as:
Global Volcanism Program, 1993. Report on Langila (Papua New Guinea). In: Venzke, E (ed.), Bulletin of the Global Volcanism Network, 18:3. Smithsonian Institution. http://dx.doi.org/10.5479/si.GVP.BGVN199303-252010.
Papua New Guinea
5.525°S, 148.42°E; summit elev. 1330 m
All times are local (unless otherwise noted)
"Eruptive activity . . . remained at a moderate-to-strong level during March. Crater 2 continued to release white-grey ash-laden vapour at a moderate-to-strong rate and occasional thick dark grey-to-brown ash clouds. These emissions were accompanied by weak-to-loud explosion noises. From the 23rd until the end of the month, continuous dark grey ash clouds rose several hundred meters above the summit. Fine ashfall was reported downwind (SE). These emissions were accompanied by weak explosions and rumbling noises. The summit area was cloud-covered on most nights during the first half of the month. However, incandescent Strombolian projections were visible on the 4th and 5th. On 15, 19-20, and after 23 March until the end of the month, steady weak to occasional bright fluctuating glow was visible. Incandescent Strombolian projections up to 80 m above the summit were seen on the 27th and 29th.
"Activity at Crater 3 was mild during the month, with weak-to-moderate emissions of white and blue vapour accompanied by the occasional forceful ejection of moderate-to-thick dark grey ash clouds rising several hundred meters above the summit. During the last 3 weeks of the month the emissions were accompanied by occasional weak explosion noises. Night glow and incandescent projections were seen on 15, 16, and 19 March. "A slight increase in seismicity during the month was recorded by the seismograph 9 km N of the volcano. About 200 Vulcanian explosion earthquakes were recorded during the month with the highest daily total of 24 events on both the 23rd and 24th."
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: H. Patia, R. Stewart, and C. McKee, RVO.