Information Contacts: Observatoire Volcanologique de Goma (OVG), Departement de Geophysique, Centre de Recherche en Sciences Naturelles, Lwiro, D.S. After 25 months of quiet, an eruption began at 0130 on 20 September, from a N30°E fissure [see slightly revised trend in 17:1] ~15 km NE of the summit caldera and 5 km NE of the 1958 (Kitsimbanyi) eruption site (figure 8). Historical eruptions from Nyamuragira have occurred within the summit caldera and from numerous flank fissures and cinder cones. It was seen for several days prior to and after 4 December in the same region between Nyiragongo and Nyamuragira. Very high values directly over the volcanoes continued on 9 July, and the diffuse cloud to the W had ~250 kt SO2. On 19 October the central crater opened and the lava flowed into the surrounding forest. Cloudy conditions prevented clear views of the volcano. J. Geotherm. . Res. of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, USA (URL: http://modis.higp.hawaii.edu/); Ground observations. This eventually resulted in the collapse of the pit crater, an event after which the magma is likely forced to follow a new route higher up to the volcano’s summit. Dario Tedesco reported SO2-rich fumaroles in Nyamuragira's central crater beginning in early March 2012, shortly before the NE-flank fissure eruptions ended (BGVN 40:01). During April-May 2014, there were only six days with thermal alerts. Some of this seismicity was thought to be related to the refilling of a magma chamber emptied by a previous eruption. The resulting lava flow passed between Kitazungurwa and Rugarambiro cones, diverted around Gitebe cone, and flowed along lava erupted in 1981-82 from Rugarambiro (figure 6). OVG reported in the July 2019 monthly that the inner crater wall collapses that were observed in May continued to occur. The sequence of development of the seven vents is not known but several witnesses reported that they became active at random. Wooster, MJ, Zhukov, B, Oertel, D, 2003, Fire radiative energy for quantitative study of biomass burning: derivation from the BIRD experimental satellite and comparison to MODIS fire products. MIROVA makes plots of Volcanic Radiative Power (VRP). Activity started in the summit caldera and later propagated to the N flank. ... a short distance away on the slopes of Nyamuragira. In those areas ash and gas caused many people to experience fever, diarrhea, headache, conjunctivitis, and respiratory problems. Explosive activity was concentrated at 3 locations along the fissure, building 3 small cinder cones. When a team from the CRSN visited the eruption site 21-25 September, a cinder cone (cone 1 on figure 8) had already reached 60 m height and lava was fountaining to as much as 180 m above the surrounding lava field. (2007) of the co-eruptive dyke (not to scale). Its last eruption a year ago did not threaten local people because the lava flowed into the Virunga national park. Exactly when this lake was first established and whether it was sustained or ephemeral remains equivocal (Campion, 2014; Oskin, 2014). . The earthquakes at Nyamuragira have been deep, between 15 and 20 km. Thermal activity decreases and ends in May 2017. Smets and others (2010a) reported that lava from the 1938-2010 eruptions cover ~40% (more than 430 km?) 2014: January Observers noted damage to crops, including green beans, sweet potatoes, cassava and banana groves. The most consistent data comes from satellite – thermal data from the MODIS instrument processed by the MODVOLC and MIROVA systems, SO2 data from the AURA instrument on NASA's OMI satellite, and NASA Earth Observatory images from a variety of satellites. Kervyn, F, d'Oreye, N, van Overbeke, A-C, 2010, GORISK: The combined use of Ground-Based and Remote Sensing techniques as a tool for volcanic risk and health impact assessment for the Goma region (North Kivu, Democratic Republic of Congo). This compilation of synonyms and subsidiary features may not be comprehensive. Tectonic and magmatic seismicity continued through June 2003, but there has been no confirmed eruptive activity. The SO2 gas was most concentrated around the eruption site and thinned as it moved away. The distribution of hypocenters was similar to that observed during September. Scientists who visited the Nyiragongo summit crater on 22 and 24 March saw intense fumarolic activity in the summit crater of Nyamuragira through binoculars. In assessing the situation, authorities considered Goma to be safe from any potential lava flows as Mount Nyiragongo would serve as a buffer. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. . Extrusion of the small lava flows continued. References. When geologists visited the vent on 14 May, they observed continuous lava fountaining and frequent bomb ejection. The eruption began . Top: ERS-2 co-eruptive interferogram of the July 2002 eruption of Nyamuragira. At that time, lava fountains were not vigorous enough to create and sustain a basin of molten lava in the pit crater. Numerous flank eruptions have been observed since that time, the last during November 2011-March 2012 on the NE flank. An ash cloud was visible in satellite imagery the next day. | August Res. The surface was a solid crust with three vents open through it. Information Contacts: H. Hamaguchi and M. Kasereka, Tohoku Univ; M. Akumbi, CRSN, Goma; N. Zana, Centre de Recherche en Géophysique, Kinshasa; J. Durieux, GEVA, Lyon, France; I. Sprod, GSFC; Reuters; AP; Agence France Press. Data from 7 July were similar, but the cloud extended >1,000 km S. The SO2 cloud mass had decreased to an estimated 300 kt by 8 July and it extended diffusely SW from the volcano. The lake lasted through April 2016 when its thermal signal abruptly disappeared (see figure 62, BGVN 42:06). Card 1187 (30 April 1971) Sergio Bottazi, Gisenyi, Rwanda. On the night of the 26th, lava emerged from the W side of the Kanamaharagi cone (formed during the 1905 eruption), building a new parasitic cone (also named Kanamaharagi) at ~1,860 m altitude. One casualty was reported; a man lost his leg when he accidentally stepped into a lava flow. Observations were performed by members of the GVO, the United Nations Office for Project Services (UNOPS), the Royal Museum for Central Africa (Belgium), and the National Museum of Natural History of Luxembourg. Satellite image of Nyamuragira courtesy of Space Imaging. . Night glow disappeared 16-17 March. Bukavu, DR Congo; Jacques Durieux, UN-OCHA resident volcanologist, c/o UN Office for the Coordination of Humanitarian Affairs, United Nations Geneva , Palais des Nations,1211 Geneva 10, Switzerland (URL: http://www.unog.ch). Scientists who visited the crater later that day saw that the crater had been cut in two parts by a fracture: NW and SE. On 24 April  at 1325, a small NW-trending fissure opened in the central part of the summit crater, emitting lava that flowed S (figure 8) and a mushroom-shaped ash plume that was observed at Katale seismic station (~20 km from the crater). By 3 January, the lava flow had traveled 4.6 km, was 15 m wide, and had burned ~11 ha (hectares; 11 x 104 m2) of forest in the Virunga National Park. Scientists are not able to visit the site because of the threat of civil unrest. Some further information after the material by Smets' team is largely tied to cited references. This report covers activity at Nyamuragira (aka Nyamulagira), primarily from April 2014 to January 2015, during which time there were intervals with lava fountains, high SO2 fluxes, elevated thermal infrared emissions, and high seismicity. Only weak gas emission was observed the next day. More than 10 times the normal number of volcanic earthquakes were recorded on 11 December from Lwiro (~l00 km SSW of the volcano), and significantly more than the normal number on 12, 21, and 22 December. About 3 LOS range increase fringes (~35 cm) are seen to the east of the fissure and about half a range decrease fringe (~6 cm) is seen to the west. Information Contacts: N. Zana, CRSN, Bukavu. Bukavu, DR Congo; Simon Carn, TOMS Volcanic Emissions Group, University of Maryland, 1000 Hilltop Circle, Baltimore, MD 21250, USA (URL: https://so2.gsfc.nasa.gov/). A new fissure, trending N20°E, opened on the N flank of the volcano. After a 3-hour hike, the team viewed the eruption from the S and noted roaring and lava fountains, as well as thunder and lightning. At the S end of the 1989 fissure a new solfataric area was noticed; a feature not formed during the 1989 or 1991 eruptions. The Alert Level remained at Yellow through at least early August. Right: The same interferogram, but the phase is unwrapped and rewrapped into C-band wavelength for ease of comparison. January 2010 flank eruption produces a new cone and 12-km-long lava flows. Information Contacts: MIROVA (Middle InfraRed Observation of Volcanic Activity), a collaborative project between the Universities of Turin and Florence (Italy) supported by the Centre for Volcanic Risk of the Italian Civil Protection Department (URL: http://www.mirovaweb.it/); Hawai'i Institute of Geophysics and Planetology (HIGP), MODVOLC Thermal Alerts System, School of Ocean and Earth Science and Technology (SOEST), Univ. Journal of African Earth Sciences, 58 (5), 778-786. 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