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Bagana is an active volcanic cone located in the centre of the island of Bougainville, Papua New Guinea, the largest island of the Solomon group. It is the most active volcano in the country, occupying a remote portion of central Bougainville Island. It is one of Melanesia's youngest and most active volcanoes.
| Mt Bagana | |
|---|---|
 An ash plume originating from Bagana at right, just below the dark-colored caldera lake of Billy Mitchell | |
| Highest point | |
| Elevation | 1,855[1] m (6,086 ft) |
| Coordinates | 6.140°S 155.195°E |
| Geography | |
  Mt Bagana Bougainville, Papua New Guinea | |
| Parent range | Emperor Range |
| Geology | |
| Mountain type | Lava cone |
| Last eruption | 2000 to 2022 (ongoing)[1] |
Bagana is a massive symmetrical, roughly 1855-m-high lava cone largely constructed by an accumulation of viscous andesitic lava flows. The entire lava cone could have been constructed in about 300 years at its present rate of lava production. Eruptive activity at Bagana is frequent and is 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 volcano's flanks on all sides.[2]
Just north-east of Bagana is the volcano crater lake Billy Mitchell. Bagana is one of 17 post-Miocene stratovolcanoes on Bougainville.[3] U.S. General Floyd L. Parks flew over the Solomon Islands on 27 October 1948 and witnessed the eruption of Bagana. His photographs of Bagana erupting were published in Life magazine.[4]
See also
References
- "Bagana". Global Volcanism Program. Smithsonian Institution.
- "Earthquake-Report.com". 26 July 2012.
- Blake, D.H. (1968), "Post miocene volcanoes on Bougainville Island, territory of Papua and New Guinea", Bulletin of Volcanology 1968, Vol. 32(1):121–138, vol. 32, no. 1, pp. 121–138, Bibcode:1968BVol...32..121B, doi:10.1007/BF02596588, S2CID 129779259
- "Volcano erupts", Life Magazine, p. 42, 29 November 1948
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На других языках
[de] Bagana
Der Vulkan Bagana ist einer der jüngsten und zugleich aktivsten der Inselgruppe von Melanesien und beherrscht mit seiner Höhe von 1750 Meter das Zentrum der Insel Bougainville. Der symmetrische Krater wurde durch mehrere übereinanderliegende andesitische Lavaströme aufgebaut. Nicht-explosiver Austritt von zähflüssiger Lava ist charakteristisch für das Ausbruchsverhalten des Bagana, jedoch ereigneten sich in der Vergangenheit ebenfalls explosivere Eruptionen mit pyroklastischen Strömen.- [en] Bagana
[fr] Bagana (volcan)
Le Bagana ou Bogana[2] est un volcan de Papouasie-Nouvelle-Guinée, sur l'île de Bougainville. Il s'agit de l'un des volcans les plus actifs et les plus jeunes de cette partie de l'Océanie. Ses éruptions sont peu explosives et produisent des coulées de lave andésitiques en forme de lobe qui descendent du cratère sommital sur l'ensemble des flancs de ce cône symétrique.[ru] Багана (вулкан)
Багана — вулкан, расположен на острове Бугенвиль, входящий в состав одноимённой провинции, в Папуа — Новая Гвинея.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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