Thursday, October 01, 2009

Galeras Volcano, Colombia - John Seach

An explosive eruption occurred at Galeras volcano, Colombia at 9:14 am on 30th September 2009. The eruption was accompanied by acoustic waves. National Parks staff at the western rim of the volcano reported two explosions with the ejection of incandescent material at the active cone. An ash column reached a height of 8-11 km above the summit. Sulphur dioxide measurements made between 9:30 and 10:00 am showed high levels between 1100 and 9300 tons/day. Ashfall was reported in the Municipalities of Sandona, Ancuya, Linares, La Llanada, and Sotomayor. The eruptive event was similar in size to that of 20th February 2009. After the eruption seismicity decreased. Due to the presence of magma close to the surface, and the history of the volcano, INGEOMINAS has raised the alert status to the highest level RED.
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