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Ruapehu volcano (New Zealand): signs of unrest, alert level raised

Fr, 16. Nov 2012, 07:51
07:51 AM | VON: T
New Zealand scientists monitoring Ruapehu volcano detected signs of increased volcanic unrest and raised the alert level of the volcano. The likelihood of new eruptions over the next weeks to months has increased, GNS Science said in their latest press release.

GNS scientists recorded increasing numbers of small earthquakes about 5 km beneath the summit area of Ruapehu, and think that the temperature at vents at the bottom of the lake is around 800 deg C, although the lake itself is only 20 deg C and has decreased its temperature since January this year.

"This suggests the vent is partly blocked which may be leading to a pressure build-up beneath Crater Lake. A sudden release of the pressure may lead to an eruption", GeoNet writes.

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Mi, 14. Nov 2012, 06:00
GeoNet reported that measurements at Ruapehu during the previous few weeks indicated that the likelihood of an eruption had increased. Scientists were concerned that increased heat at depth beneath the crater indicated a partialyl blocked vent and the potential for an eruption due to increased pressure. On 16 November the Volcanic Alert Level remained at 1 (signs of volcano unrest) and the Aviation Colour Code was raised to Yellow. ... Read all
Mi, 7. Nov 2012, 08:07
No unusual activity has been seen recently at Ruhapehu volcano. This is the latest update from GeoNet: ... Read all
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