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Notícia OVGA 22-010-2020 Crater Lake at Ruapehu volcano (image: @geonet/twitter)   GeoNet reported that during February-April, Crater Lake (Te Wai ā-moe) heated slowly to a peak temperature of 42ºC. Due to a heating-cooling cycle, there is a period of slow change before a cooling trend is clearly shown in the data. That trend is now confirmed with current temperatures close to 35ºC, with further slow cooling expected. Colour temperature is...
Notícia OVGA 20-010-2020 Vulcão dos Capelinhos, Faial, Açores CARLOS LOPES   O ex-director do departamento científico da NASA e actual cientista-chefe do Centro de Voo Espacial Goddard da agência espacial dos EUA é um dos oradores de uma iniciativa que celebra os 500 anos da viagem de circum-navegação de Fernão de Magalhães.   O ex-director do departamento científico da agência...
In a 2002 eruption, a lava lake within the crater of Nyiragongo volcano drained in hours. CARSTEN PETER/NAT GEO IMAGE COLLECTION In 2002, the last time Nyiragongo volcano erupted, lava raced down its flanks into the crowded city of Goma, on the border between the Democratic Republic of the Congo and Rwanda. About 250 people died, 20% of the city was destroyed, and hundreds of thousands fled. Since then, the at-risk population living in the shadow of the 3470-meter-tall...
Notícia OVGA 30-09-2020 Pyroclastic flow from Reventador volcano yesterday (image: IGEPN)   The activity of the volcano has remained essentially unchanged characterized by effusive-explosive eruption. IGEPN reported that the lava flow on the northeast flank remains active, currently about 400 m long. Incandescence is visible from the crater and caused hot avalanches of blocks sliding down the southwest flank that reached approx. 600 m. Near-constant ash...