Mt. Etna

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Sicily, Italy 37.73 North, 15.00 East, summit elevation 3350 meters Shield volcano Mt. Etna is the largest active volcano in Europe. It has an elliptical base (38 x 47 km) and a maximum elevation of about 3350 meters. The volcano dominates the landscape of North-East Sicily, Italy. John Seach at summit of Mt. Etna in 1999 John Seach at summit of Mt. Etna in 1999 Mt. Etna has the longest period of documented eruptions in the world. Etna is noted for the wide variety of eruption styles. The volcano is at its most spectacular when both summit and flank eruptions occur simultaneously. The structure of Mt. Etna formed about 14,000-15,000 years ago. Under open vent conditions, ash emission only occurs during flank eruptions of Mt. Etna’s volcanoes. Structural and seismic data indicate that the regional deformation of Mt. Etna. The area is generally dominated by North-South compression as the result of subduction of the African tectonic plate under the Eurasian plate. 2011 Eruption On the evening of January 11th, 2011, an increase in volcanic tremor was recorded at Mt. Etna. Seismic activity reached a peak at 7:00 a.m. on January 12th when the source moved from North of North-East crater to the Southeast crater. At about 9:00 p.m., lava overflowed the eastern rim of SE crater, and fed a flow that moved toward the western wall of the Valle del Bove. Lava fountains occurred at Southeast crater, Mt. Etna volcano on the night of 12-13 January 2011. The eruption consisted of a sustained lava fountain, lava flow, and an ash column reaching several kilometers high. The lava fountain lasted 42 minutes on January 12th and reached a height of 300-500 meters. The lava fountain became pulsating after this time and reached a height of 100-200 meters until 12:55 on the morning of January the 13th. Ash fall was reported on the south flank of Mt Etna.

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