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Report on Langila (Papua New Guinea) — November 2018


Bulletin of the Global Volcanism Network, vol. 43, no. 11 (November 2018)
Managing Editor: Edward Venzke. Research and preparation by Paul Berger.

Langila (Papua New Guinea) Several weak ash plumes during June, September, and October 2018

Please cite this report as:

Global Volcanism Program, 2018. Report on Langila (Papua New Guinea) (Venzke, E., ed.). Bulletin of the Global Volcanism Network, 43:11. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201811-252010


Papua New Guinea

5.525°S, 148.42°E; summit elev. 1330 m

All times are local (unless otherwise noted)

After Vulcanian activity in the latter part of 2009, activity at Langila subsided, with infrequent activity until 2016, when activity increased somewhat through May 2018 (BGVN 34:11, 35:02, 42:01, and 42:09). This pattern of intermittent activity continued through October 2018. No reports were available from the Rabaul Volcano Observatory during the current reporting period (June-October 2018), but volcanic ash warnings were issued by the Darwin Volcanic Ash Advisory Centre (VAAC).

Four explosions were reported by the Darwin VAAC in June 2018, generating ash plumes that rose 2.1-3.4 km (table 6). There were no reports of an explosion in July or August 2018. Additional ash plumes were detected on 29 September and 30 October 2018

Table 6. Reports of ash plumes from Langila during 1 June-30 October 2018 based on analyses of satellite imagery and wind model data. Courtesy of the Darwin VAAC.

Date Ash plume altitude (km) Ash plume drift Observations
07 Jun 2018 3.4 SW Detached from the summit.
10 Jun 2018 2.1 -- Dissipated.
17 Jun 2018 2.4 W --
20-21 Jun 2018 2.4 W, NW --
29 Sep 2018 2.4 NE --
30 Oct 2018 2.7 SE --

Geological Summary. 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 E flank of the extinct Talawe volcano in the Cape Gloucester area of NW New Britain. A rectangular, 2.5-km-long crater is breached widely to the SE; Langila was constructed NE of the breached crater of Talawe. An extensive lava field reaches the coast on the N 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. The youngest and smallest crater (no. 3 crater) was formed in 1960 and has a diameter of 150 m.

Information Contacts: Darwin Volcanic Ash Advisory Centre (VAAC), Bureau of Meteorology, Northern Territory Regional Office, PO Box 40050, Casuarina, NT 0811, Australia (URL:http://www.bom.gov.au/info/vaac/).