Report on Langila (Papua New Guinea) — 23 November-29 November 2005

Smithsonian / US Geological Survey Weekly Volcanic Activity Report, 23 November-29 November 2005
Managing Editor: Gari Mayberry

Please cite this report as:

Global Volcanism Program, 2005. Report on Langila (Papua New Guinea). In: Mayberry, G (ed.), Weekly Volcanic Activity Report, 23 November-29 November 2005. Smithsonian Institution and US Geological Survey.

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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)


Vulcanian eruptions continued at Langila's Crater 2 during 21-27 November, with a slight increase in the level of activity compared to the previous week. The activity increase was marked by ash emissions that rose to heights between 1 and 2 km above the summit crater (or 7,650 and 10,900 ft a.s.l.). The ash clouds drifted W, SW, SE, and NW, depositing ash in those areas. Incandescence and projections of volcanic material were visible at the volcano during many nights. Crater 3 was quiet during the report period. Seismicity was at low-to-moderate levels, consisting of low-frequency earthquakes associated with the Vulcanian activity and periodic volcanic tremor.

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.

Source: Rabaul Volcano Observatory (RVO) via the Darwin Volcanic Ash Advisory Center