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Eruzione Etna, le nuove immagini NASA

Nuove immagini dell’eruzione laterale dell’Etna, iniziata lo scorso 24 dicembre, pubblicate sul profilo instagram Goddard Space Flight Center della NASA. Le immagini sono state acquisite il 28 dicembre dal satellite Landsat 8 del programma Landsat, il più longevo programma di imaging continuativo nella storia, nato dalla collaborazione tra la NASA e la USGS (United States Geological Survey, l’agenzia di rilevamento geologico degli Stati Uniti).

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Etna Awakens! 🌋 For the first time in perhaps a decade, Mount Etna experienced a “flank eruption” — erupting from its side instead of its summit — on December 24, 2018. The activity was accompanied by 130 earthquakes occurring over three hours that morning. Mount Etna, Europe’s most active #volcano, has seen periodic activity on this part of the mountain since 2013. The Operational Land Imager (OLI) on the Landsat 8 satellite acquired the image of Mount Etna on December 28, 2018. The closeup (annotated) image highlights the active vent and thermal infrared signature from lava flows, which can be seen near the newly formed fissure on the southeastern side of the volcano. The image was created with data from OLI (bands 4-3-2) and the Thermal Infrared Sensor (TIRS) on Landsat 8. Ash spewing from the fissure cloaked adjacent villages and delayed aircraft from landing at the nearby Catania airport. Earthquakes occurred in the subsequent days after the initial eruption and displaced hundreds of people from their homes, according to news reports. @NASAEarth Observatory images by Joshua Stevens, using Landsat data from the U.S. Geological Survey. #nasagoddard #MountEtna #Etna #science

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