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Report on Bagana (Papua New Guinea) — March 2004

Bulletin of the Global Volcanism Network, vol. 29, no. 3 (March 2004)
Managing Editor: Richard Wunderman.

Bagana (Papua New Guinea) Abundant MODIS thermal alerts during March 2003-February 2004

Please cite this report as:

Global Volcanism Program, 2004. Report on Bagana (Papua New Guinea). In: Wunderman, R (ed.), Bulletin of the Global Volcanism Network, 29:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN200403-255020.

Volcano Profile |  Complete Bulletin


Bagana

Papua New Guinea

6.137°S, 155.196°E; summit elev. 1855 m

All times are local (unless otherwise noted)


Continued MODIS thermal alerts during March 2003-February 2004 (table 2) suggests that activity continued over the year ending February 2004. No corroborative reports of activity have been received from the Rabaul Volcano Observatory or the Darwin Volcanic Ash Advisory Centre.

Table 2. Nights on which MODIS thermal alerts were recorded for Bagana, for the year ending February 2004. Thermal alerts recorded in daylight hours have been omitted for data reliability reasons (one case on 23 October 2003). Data courtesy HIGP MODIS Thermal Alert System.

Month Days with Thermal Alerts
Mar 2003 13, 19, 26, 31
Apr 2003 2, 11, 18, 25
May 2003 18, 20
Jun 2003 19, 26
Jul 2003 21, 23, 25
Aug 2003 4, 6, 8, 13, 24, 29
Sep 2003 16
Oct 2003 2, 4, 07, 13, 18, 27
Nov 2003 5, 10, 12
Dec 2003 3
Jan 2004 13, 15, 20, 24, 31
Feb 2004 5

Geologic Background. Bagana volcano, occupying a remote portion of central Bougainville Island, is one of Melanesia's youngest and most active volcanoes. This massive symmetrical cone was largely constructed by an accumulation of viscous andesitic lava flows. The entire edifice could have been constructed in about 300 years at its present rate of lava production. Eruptive activity is frequent and characterized by non-explosive effusion of viscous lava that maintains a small lava dome in the summit crater, although explosive activity occasionally producing pyroclastic flows also occurs. Lava flows form dramatic, freshly preserved tongue-shaped lobes up to 50 m thick with prominent levees that descend the flanks on all sides.

Information Contacts: HIGP MODIS Thermal Alert System, Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa (URL: http://modis.higp.hawaii.edu/).