Ruapehu volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 10 August-16 August 2016 (Continuing Activity)
Wed, 10 Aug 2016, 06:00 06:00 AM | BY: VNGeoNet reported that the temperature of Ruapehu's summit Crater Lake had been declining since May. During an overflight on 10 August scientists recorded gas emissions at typical low background levels. The next day the lake water temperature was 12.6ºC, one of the lowest temperatures since the 1995/1996 eruptions.
The lake was a dark green, overflowing, and sulfur slicks outlined areas of upwelling. A strong sulfur odor was noted near the lake. The level of volcanic tremor which was at moderate levels during May-June had declined to typical background levels.
The Volcanic Alert Level was lowered to 1 (minor volcanic unrest) and the Aviation Colour Code was lowered to Green.
From: Global Volcanism Program, 2016. Report on Ruapehu. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 10 August-16 August 2016. Smithsonian Institution and US Geological Survey.
Wed, 29 Jun 2016, 06:00
Ruapehu volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 29 June-5 July 2016 (Continuing Activity)
On 5 July GeoNet reported that the elevated activity at Ruapehu had declined; gas emissions returned to baseline levels, volcanic tremor decreased to levels detected in the second half of 2015, and the temperature of the summit Crater Lake had declined from a high of 46 to 23 ºC. The Volcanic Alert Level was lowered to 1 (minor volcanic unrest) and the Aviation Colour Code was lowered to Green. ... Read all
Fri, 20 May 2016, 08:07
On 17 May GeoNet reported that the lake temperature of Ruapehu's summit Crater Lake had decreased from a high of 46 degrees Celsius to 39 degrees, with some of the decrease attributed to rain and snowfall. ... Read all