It is a new little volcano in Chile.
http://volcanism.wordpress.com/2008/05/12/...te-12-may-2008/Chaitén update, 12 May 2008 12 May 2008
Posted by volcanism in Chaitén, Chile, activity reports, eruptions, natural hazards.
A bulletin issued late yesterday by ONEMI summarizes the state of things at Chaitén volcano as follows:
Chaitén volcano maintains continual emanations of ash with a column between 5500 and 7000 metres in altitude and a plume trending east south-east towards the town of Futaleufú. At 16:30 today the column appeared dense with ashfalls on the Argentine side. The town of Futaleufú is not affected by this situation. The Meteorological Directorate of Chile reports that over the next few days predominantly western winds in the Central and South zones of the country will carry the ash towards Argentine territory.
At a press conference yesterday (11 May 2008), SERNAGEOMIN volcanologist Luis Lara said that the situation at Chaitén remains dangerous. It is unclear precisely how the eruption will develop, but ‘the persistence of a seven-kilometre-high column of pyroclastic material and a series of strong earthquakes’ means that the worst-case scenario ‘remains in force’. That worst-case scenario would involve the collapse of the eruption column, producing ‘an explosion of pyroclastic material which would fall at 200 kilometres per hour upon the valleys and water-courses of Chaitén, destroying everything in its path’ (Canal13.cl). Since the eruption began on 2 May, reported Lara, there have been continual tremors around the volcano of between two and three on the Mercalli scale (I believe Chile uses the Modified Mercalli Scale, although I am open to correction on this), with epicentres from five to ten kilometres deep. ‘Only if in the coming days we see a significant reduction of the eruptive column and are no longer registering seismicity of the kind we are seeing currently’, Lara told the Italian news agency Ansalatina, ‘will we consider that the possibility of the worst-case scenario has no validity’.
The Chilean Government minister responsible for the crisis has called Chaitén ‘the greatest and most complex natural emergency’ in Chile’s history: ‘The fundamental problem with this emergency is uncertainty. We have a volcano which has been active for eight days and has not ceased its activity. It’s like an oven that’s building up pressure and constantly hurling out ash’. Fog and rainclouds have obscured Chaitén from view over the past few days so no direct observations have been possible. SERNAGEOMIN is installing additional monitoring equipment around the volcano and maintaining a close watch on its activity (La Jornada).
The town of Puerto Montt, about 200 kilometres north of the volcano, has become the centre for the Government’s evacuation and relief operations. Food and other supplies are being distributed from military trucks to the evacuees of Chaitén, Futaleufú and surrounding areas:
‘I have been given winter squash, bananas, carrots, water. I think I can last out for four or five days’, Augusto Ampuero, a farmer who was evacuated from Chaitén, the town nearest the volcano, told Reuters. He is being looked after, with his family, by his sister who lives in Puerto Montt. ‘I left my boat, my animals and my home behind, and I don’t know what is going to happen to us’. (Reuters)