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Actualités:vendredi, avril 27, 2012
Le volcan Nyamuragira dans la République Démocratique du Congo pourrait former un nouveau lac de lave dans sa caldeira au sommet. ...
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Nyamuragira volcanvolcan bouclier 3058 m / 10,033 ft
DRCongo, -1.41°S / 29.2°E Condition actuelle: Activité petite ou avertissement éruption imminente (3 sur 5) Nyamuragira webcams / live data
Dernière mise à jour: 24 oct. 2012
Style éruptif tipique: Éruptions effusives (style hawaiien) Eruptions du volcan Nyamuragira: 1865, 1882, 1894, 1896, 1899, 1901, 1902, 1904, 1905, 1906(?), 1907, 1907, 1908, 1909, 1912-13, 1920, 1921-38, 1938-40, 1948, 1951, 1951-52, 1954, 1956, 1957, 1958, 1967, 1971, 1976-77, 1980, 1981-82, 1984, 1986, 1987-88, 1989, 1991-93, 1994, 1996, 1998, 2000, 2001, 2002, 2004, 2006, 2010, 2011 (6 Nov, ongoing)  Nyamuragira photos du volcan Derniers séismes proches:
Introduction:Nyamuragira est de l'Afrique et l'un des volcans les plus actifs du monde. Il entre en éruption environ tous les deux ans, la production de grandes coulées de lave fluide.Nyamuragira est un massif riche en potassium volcan bouclier basaltique situé à environ 25 km au nord du lac Kivu, dans l'Afrique de l'Est la vallée du Rift NO du volcan Nyiragongo. Il dispose d'un volume de 500 kilomètres cubes, et de vastes coulées de lave de la couverture du volcan 1500 km carré de la Rift Est Africain, certains coulées de lave ayant parcouru plus de 30 km du sommet. Le volcan bouclier, 3058 m de haut, a une caldeira sommitale, environ 2 km de large et les murs jusqu'à environ 100 m de haut. Au cours de certaines éruptions, un lac de lave est contenue dans la caldeira. Comme c'est le cas pour les volcans boucliers, il a deux éruptions à l'intérieur de la caldeira sommitale et de vastes zones de rift sur les flancs, la production de nombreuses fissures et des cônes de scories. Nyamuragira Photos:
2011-2012 Kimanura flank eruption
A new flank eruption from started at Nyamuragira on 6 November 2011, from a series of E-W aligned fissures located about 10 km east of the summit caldera. The eruption started with intense ground fracturing (evidence of which was observed during our expedition) and tall lava fountains from several vents, that quickly started to built the western Kimanura cone complex. Lava flows traveled many kilometers to the north, burning large areas of forest, but caused no damage to infrastructure, since the area is not populated. Tall fountaining lasted about 1 week, and moved to intense spattering from active lava-lake filled vents and strombolian explosions. Depending on the wind direction, areas surrounding the vents received up to about 1 meter of lapilli and scoria fallout. A second cluster of vents opened about 1 km down-slope on the same fissure system in early January and produced lava fountains our first expedition group in January was lucky to observe from close. Another, similar sized complex of vents built up quickly the so-called east Kimanura vent complex. Similar to the activity of the western complex, lava fountaining merged into a form of intense spattering from boiling lava lake activity and continued to fee large lava flows traveling to the north. As of 2 February, the eruption is still continuing. It seems likely that this eruption ranks as one of the volcano´s largest during the past 100 years, both in duration and total lava volume erupted. 
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