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Ruapehu volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 30 March-5 April 2011 (New Activity / Unrest)

Wed, 30 Mar 2011, 06:00
06:00 AM | BY: VN
On 5 April, GeoNet reported that the temperature of Ruapehu's summit Crater Lake had been high for a sustained period and was currently between 38 and 39 degrees Celsius. The highest temperature since unrest began in October 2010 was 41 degrees Celsius, measured on 1 March. The report also noted that during the previous few weeks there was an increase in carbon dioxide gas emissions, increased seismicity, and changes in Crater Lake water chemistry.
The unrest prompted GeoNet to raise the Aviation Colour Code although the Volcanic Alert Level remained at 1 (some signs of volcano unrest).

Source: GeoNet
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From: Global Volcanism Program, 2011. Report on Ruapehu. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 30 March-5 April 2011. Smithsonian Institution and US Geological Survey.

Previous news

Thu, 10 Mar 2011, 08:40
Ruapehu volcano who last erupted in 1995-96 might be heading towards a new eruptive cycle. The temperature of the crater lake has increased to 40C and other indicators such as seismicity and deformation all point towards a gradual reawakening. ... Read all
Wed, 17 Sep 2008, 06:00
On 18 September, GeoNet reported that the temperature of Ruapehu's summit crater lake had increased to 22.5 degrees Celsius, up from 16 degrees Celsius in August. Levels of sulfur dioxide and carbon dioxide also increased. Tremor was detected. ... Read all
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