News and activity reports about Ruapehu volcano:

Ruapehu volcano (New Zealand): unrest at volcano decreases

Tue, 5 Mar 2013, 11:24
11:24 AM | BY: T
Unrest at the volcano is decreasing. GNS scientists have been able to confirm that the temperatures at depth of the crater lake have started to decline, although still remain elevated.
The Crater Lake temperature remains static at 22-25°C, which might indicate that a partial blockage between the deeper hydrothermal system and the Crater Lake remains.
Because of the resulting potential to increase pressure at depth over time, which could result in sudden explosions, GNS maintains Volcano Alert Level 1 (elevated level of unrest).
Gas data from January and February show normal emission rates for both SO2 and CO2, and seismicity has remained low, with only some weak volcanic tremor and few shallow earthquakes. Visual observations in the last few weeks have sometimes shown areas of discolouration in the lake. These are relatively common and are thought to reflect internal convection processes within the lake.

Previous news

Thu, 24 Jan 2013, 08:29
Current seismic recording at Ruapehu (Far West station, GeoNet)
Current level of earthquakes remains low. ... Read all
Mon, 21 Jan 2013, 09:31
Current seismic signal at Ruapehu (GeoNet)
Seismicity remains low. ... Read all
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