Italy’s Mount Etna, one of many world’s most energetic volcanoes, has erupted twice in lower than 48 hours, spewing a fountain of lava and ash into the sky. This picture, captured yesterday 18 February 2021 at 09:40 GMT by the Copernicus Sentinel-2 mission, has been processed utilizing the mission’s shortwave-infrared band to indicate the lava circulate in vibrant purple.
After Etna’s highly effective eruption on Tuesday 16 February, the volcano produced one other spectacular show of fireside – with tall lava fountains taking pictures into the evening sky, reaching heights of round 700 m. The primary eruption prompted massive lava flows to descend eastwards into the Valle del Bove, travelling for roughly four km, however the second main explosion on Thursday 18 prompted the lava additionally to run for about 1.three km down the volcano’s southern flanks.
Ash from the eruptions lined the town of Catania and authorities have been monitoring developments within the close by cities on the base of the volcano, together with Linguaglossa, Fornazzo and Milo. The eruption additionally pressured the non permanent closure of Sicily’s Catania Airport, which regularly occurs when the volcano is energetic.
In accordance with Volcano Discovery, which publishes frequent alerts about seismic exercise, the volcano additionally noticed exercise earlier right this moment, 19 February, with lava flows persevering with to descend to the south and east. Mount Etna is the tallest energetic volcano in Europe and ceaselessly erupts.
Satellite tv for pc knowledge can be utilized to detect the slight indicators of change which will foretell an eruption. As soon as an eruption begins, optical and radar devices can seize the varied phenomena related to it, together with lava flows, mudslides, floor fissures and earthquakes. Atmospheric sensors on satellites may establish the gases and aerosols launched by the eruption, in addition to quantify their wider environmental influence.
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