Long Island (Papua New Guinea)
Long Island seen from space, with Lake Wisdom clearly visible (false color).
|Elevation||1,280 m (4,200 ft)|
|Prominence||1,280 m (4,200 ft)|
|Location||Papua New Guinea|
|Mountain type||Complex volcano|
|Last eruption||November 1993|
Two stratovolcanoes are located on the island: Mount Reaumur and Cerisy Peak. The summit of the volcanic complex collapsed during at least three major explosive eruptions, about 16,000, 4000, and 300 years ago. These produced a large caldera 10 x 12.5 km in size, now filled with a freshwater crater lake, Lake Wisdom. In 1953-1954 and 1968, volcanic activity created Motmot Island on the crater lake, 200 x 200 m in size. The last eruption was one of the largest in Papua New Guinea's recent history with an estimated air-fall volume in excess of 11 cu km, comparable to the 1991 eruption of Mount Pinatubo, but the Global Volcanism Program gives a much higher estimate of 30 cu km. This cataclysmic event prompted legends of a "Time of Darkness". The most recent (and a smaller) eruption occurred in 1993.
Long Island was charted in 1643 by Abel Tasman but he mistook it for part of the New Guinea mainland.
Long Island was utilised as a barge staging area by the Imperial Japanese during World War II. On December 26, 1943, D Company of the 592d Engineer Boat and Shore Regiment, 2d Engineer Special Brigade, US Army, landed on Long Island to prepare a radar station as part of the Battle of Cape Gloucester. The Royal Australian Air Force No. 338 Radar Station was set up at Matfum Point and became operational on April 6, 1944 and was to remain until March 1945.
- Specht, J.; et al. (1980). "Long Island, Papua New Guinea: Introduction." (PDF). Records of the Australian Museum. Retrieved 2016-04-08.
- Hoffman, G. (Fall 2008). "Volcanic flow deposits on the flanks of Long Island, Papua New Guinea: lavas or pyroclastics?". Harvard. Retrieved 2009-03-28.
- Blong, Russell J. (1982). Time of Darkness. Canberra: Australian National University Press.
- Coello, Francisco "Conflicto hispano-alemán" Boletín de Sociedad Geográfica de Madrid, t.XIX. 2º semestre 1885, Madrid, p.371.
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