News and activity reports about Ruapehu volcano:
Ruapehu volcano (New Zealand): volcanic unrest decreases
The level of seismic activity has decreased.
Wed, 13 May 2015, 11:0511:05 AM | BY: T
“During April we recorded intermittently moderate to strong levels of volcanic tremor at Mt Ruapehu, however since April 28 the level has more than halved” reported volcanologist Brad Scott.
Mt Ruapehu’s Crater Lake has started to cool. The temperature had declined to about 37°C in late April and is now at 34°C. The lake has been in a heating phase which started in late 2014 when the lake was 15°C, reaching a peak of over 40°C in late January–early February 2015 (see RUA 2015/02).
The Crater Lake was sampled on April 24 and no changes are apparent in the chemistry of the lake water. No other changes have been observed at the Crater Lake.
Sun, 3 May 2015, 22:46
Intermittent moderate to strong volcanic tremor has been observed at the volcano during the past 2-3 weeks, GNS Science reported. The seismic activity is among the strongest observed in the past 8 years. ... read all
Thu, 5 Feb 2015, 20:00
The crater lake temperature has been increasing since early December 2014, rising from 15 to over 40 deg C. This is not seen as a sign that an eruption is to be expected in the near futures and the alert level remains at level 1, meaning minor unrest only. ... read all
Wed, 3 Dec 2014, 18:48
Recent measurements by NZ scientists indicate that the volcano's crater lake is currently in a cooling trend. At 15 deg C, it has the lowest temperature recorded since April 2010. ... read all
Sat, 13 Apr 2013, 05:50
GNS reported that "the temperature of Crater Lake has started to rise and has now reached 30°C. It has been accompanied by some minor volcanic tremor. The chemistry data from our last sampling trip confirms the decline of temperature in the deep geothermal system. read all
Tue, 12 Mar 2013, 11:22
The latest lake water temperatures readings and seismic recordings showed no particular signs of unrest in recent weaks and the volcanic alert status level has been reduced back to normal=green. ... read all