Скачать или смотреть Geologist Analysis Of Etna 3 June Pyroclastic Eruption, Siciliy, Italy,Africa Eurasia Collision Zone

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A strong pyroclastic flow occurred from the South-East Crater this morning.The reason for this flow was (likely) the sudden accumulation and destabilization of the northern flank of the crater area, which in turn developed into very dangerous pyroclastic flow.The block-and-ash flow seems not to exceeded the Valle del Leone caldera rim.The event generated ash-rich plumes separating from the pyroclastic density current known as phoenix clouds.The eruptive activity transited into fountaining period.The seismic instrument registered very high levels of volcanic tremor, located in the South-East Crater area.Timelapse videos from webcams allow to at least partially reconstruct the series of events at Etna yesterday: first, hot material rapidly accumulated on the eastern rim of the summit vent seemed to start sliding; the release of weight then seems to allow an explosion to take place, destabilizing a larger portion of the upper flank, thus generating a very large slide.Due to the steep slope, acceleration is large: within seconds, the moving rock masses, disintegrating and mixing with air become a turbulent, hot, fluidized mixture (pyroclastic flow) that reaches the base of the cone quickly before descending further into Valle del Leone and Valle del Bove.Following the spectacular pyroclastic flow from the SE Crater yesterday, a recent Sentinel-2 satellite acquisition of the eruptive activity has been detected.The satellite imagery depicts a new lava flow emitting onto the eastern flank of the edifice.