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.
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.
|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|
|Oct 2003||2, 4, 07, 13, 18, 27|
|Nov 2003||5, 10, 12|
|Jan 2004||13, 15, 20, 24, 31|
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/).