April 10. Aetna rebounded to life in the beginning of April, with new eruptions from the southeast crater. On April 8-9, the Italian volcano threw a little three-kilometer ash and lava flow, but then calmed down. However, seismic activity under the volcano continues, and late in the evening today (April 10) on Etna started small strombolian explosions in the southeast crater of the cone (see below). You can check the full description of the renewed activity on the site INGV-Catania. Now this is the third eruption of Etna in early 2011.
The third "convulsive" eruption in 2011 from the south-east crater occurred on April 10, after 51 days from the previous paroxysm (18 February).
The event, in essence, repeating their predecessors, with lava flows, probably more than 3 km in length, the release of tephra (T. — all loose volcanic material (TSB) — approx. Translator) and a pillar of smoke and intense spouting lava.
During the night of 9 to 10 April Strombolian activity within the crater gradually increased as the amplitude of volcanic tremors recorded seysmosetyu INGV-Catania. Lava flows overran appearing evening of April 9, were initially very slow, and at dawn on April 10 had not yet reached the western slope of the Valle del Bove.
During the first half of the day, April 10, eruptive phenomena rapidly intensified. It was also noted that significantly increased the amplitude of volcanic tremors, which was the culmination of about 09:30 GMT, with a strong gush of lava and increasing emissions of ash and smoke that drifted by the wind to the south-east, causing ash falls in the area between Trecastagni, Fleury, Zafferana, Eka S. Antonio, Ekitretstsa, Ekikastello and Ekireale. In the same period, the rate of lava emission increased strongly, generating new streams covering preceding them, the current down to the Valle del Bove, following, in principle, the same path as the lava flows of 12-13 January and 18 February. On his way lava flows sometimes encountered dense drifts, leading to "explosive" interaction and created the spectacular columns of steam and ash.
Intensity of the eruption and ash emissions continued for some time before 14:00 GMT, was followed by a rapid decrease in the activity.
Source: ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA, Bigthink.com