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Satellite data helped scientists locate the volcanic source of a pumice raft floating in the South Pacific Ocean, illustrating their promise in locating and monitoring undersea eruptions. On 21 August 2019, a pumice raft close to the Exclusive Economic Zone border between Fiji and Tonga was visible from space. Satellite data, combined with seismic readings, helped locate the undersea volcano that was the source of the pumice. Credit: European Space Agency,  Image:...
  Lava flow on Stromboli's Sciara del Fuoco reaching the sea this morning (image: LGS webcam)   During the past night, activity showed a significant increase and produced a lava flow down the Sciara del Fuoco, reaching the sea It is not exactly clear when the increase occurred, but webcam imagery suggests that the lava flow began to travel downslope around 1-2 am local time. By about 06:30 local time, the lava flow had reached the sea. At around 08:30,...
  O cientista, professor de Física na Universidade de Coimbra e o mais importante divulgador científico português, considera que a ciência está a fazer o que pode: "Mas não há milagres." Deixa uma certeza: "Apesar de todos os ataques de vírus e bactérias, a humanidade está mais forte que nunca." O físico Carlos Fiolhais.   Está fechado em casa há duas...
    PVMBG recorded that 4 new eruptive events occured since the last update. On 27 March at 21:46 local time an explosion at the volcano generated a dense dark ash plume, which reached approx. 13,000 ft (3,968 m) altitude and drifted W. On 28 March PVMBG recorded two explosions. First explosion at 05:21 local time generated an ash plume that rose approx. 6,561 ft (2,000 m) above the summit and drifted W. Second explosion at...