********************************************************************************** Etna and Stromboli update – 10 November 2009 From: Sonia Calvari <calvari@xxxxxxxxxx> ********************************************************************************** The previous Etna’s effusive eruption, started on 13 May 2008, finished on 4 July 2009. No explosive activity has been observed at the summit craters for a few months. On 6 November 2009 deep explosive activity resumed at the SE Crater. The Istituto Nazionale di Geofisica e Vulcanologia monitoring web cameras detected pulsating red glowing from the eastern base of the SE Crater, produced from a vent within the depression that cuts its eastern flank. Explosive activity is quite deep and visible as red glows only at night, and no ejecta have been found on the snow that covers the summit of the volcano. This activity is still going on as on today, 10 November 2009. Stromboli volcano on 8 November produced a major explosion from the vents in the central crater zone, fragmenting and blowing out part of the eastern flank of the cinder cone. The explosion produced an eruptive column more than 350 m high that was drifted SE by the wind. The explosion was soon followed by a lava flow erupted from the widened central vent. The lava flow spread within the crater depression for a few minutes, and reached the maximum estimated lenght of ~60 m. Lava flow within the crater depression formed also between 22 and 25 April, on 3 May, and on 30 August 2009. After the 8 November explosion, the explosive activity returned to the background levels. ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
