Report on Lamington (Papua New Guinea) — December 2003
Bulletin of the Global Volcanism Network, vol. 28, no. 12 (December 2003)
Managing Editor: Richard Wunderman.
Lamington (Papua New Guinea) Available observations suggest quiet prevails
Please cite this report as:
Global Volcanism Program, 2003. Report on Lamington (Papua New Guinea) (Wunderman, R., ed.). Bulletin of the Global Volcanism Network, 28:12. Smithsonian Institution.
Papua New Guinea
8.95°S, 148.15°E; summit elev. 1680 m
All times are local (unless otherwise noted)
Lamington remained quiet during 10 October-14 December 2003. Cloud cover over the summit area made visual observations difficult, and the earthquake recorder did not function due to technical problems. Although it was difficult to make a reliable prognosis based on very limited data and information, Rabaul Volcano Observatory expected Lamington to remain quiet.
Geologic Background. Lamington is an andesitic stratovolcano with a 1.3-km-wide breached summit crater containing a lava dome. Prior to its renowned devastating eruption in 1951, the forested peak had not been recognized as a volcano. Mount Lamington rises above the coastal plain north of the Owen Stanley Range. A summit complex of lava domes and crater remnants tops a low-angle base of volcaniclastic deposits dissected by radial valleys. A prominent broad "avalanche valley" extends northward from the breached crater. Ash layers from two early Holocene eruptions have been identified. After a long quiescent period, the volcano suddenly became active in 1951, producing a powerful explosive eruption during which devastating pyroclastic flows and surges swept all sides of the volcano, killing nearly 3000 people. The eruption concluded with growth of a 560-m-high lava dome in the summit crater.
Information Contacts: Ima Itikarai, Rabaul Volcano Observatory (RVO), P.O. Box 386, Rabaul, Papua New Guinea.