Saturday, July 04, 2009

Chaitén Volcano, Chile - John Seach

Eruptive activity continues at Chaiten volcano in Chile. Over the past week there has been a decrease in earthquake number and magnitude, with 17 earthquakes recorded per day. Ash emissions rise 1.5 km above the summit. A lava dome continues to grow in the summit crater, which may collapse generating ash and block flows in the adjacent valleys. Dome growth is mostly in the western side of the caldera. Adjacent valleys contain ash deposits which may mobilise in heavy rains, causing lahars. Chaiten volcano remains on alert level RED.
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