New eruptions reported at Etna volcano in Italy
Istituto Nazionale di Geofisica e Vulcanologia (INGV) reports about the third paroxysmal eruptive episode of the year 2011 from the pit crater on the east flank of the Southeast Crater cone occurred on 10 April, 51 days after the previous paroxysm on 18 February. The event was essentially a repetition of its predecessors, with a lava flow probably exceeding 3 km in length, generation of a tephra and gas column, and intense lava fountaining.
During the forenoon of 10 April, the eruptive phenomena rapidly intensified, and a further significant increase in the volcanic tremor amplitude was observed, which culminated around 09.30 GMT (local time -2), with vigorous lava fountaining and the rise of an ash and gas column, which was blown by the wind to the southeast, causing ash falls in a sector between Trecastagni, Fleri, Zafferana, Aci S. Antonio, Acitrezza, Acicastello and Acireale. In this same interval, the rate of lava emission increased dramatically, producing a new flow that covered its predecessor before spilling down into the Valle del Bove, following essentially the same path as the lava flows of 12-13 January and 18 February. On its path, the lava flow locally encountered thick snow cover, which lead to violent explosive interaction that generated spectacular columns of vapor and ash.
Intense eruptive activity and ash emission continued until sometime before 14:00 GMT, and were followed by a rapid decline; no eruptive activity has occurred since the late afternoon. (INGV)
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