Tongariro volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 19 August-25 August 2015 (Continuing Activity)
Wed, 19 Aug 2015, 06:00 06:00 AM | BY: VNOn 19 August GeoNet reported that activity at Tongariro's Te Maari Craters had declined significantly since the eruption in 2012, with data suggesting that unrest associated with the eruption was over. The Volcanic Alert Level was lowered to 0 (on a scale of 0-5). The Volcanic Alert Level for Ngauruhoe is separate and had been lowered to 0 on 20 April.
From: Global Volcanism Program, 2015. Report on Tongariro. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 19 August-25 August 2015. Smithsonian Institution and US Geological Survey.
Wed, 15 Apr 2015, 06:00
Tongariro volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 April-21 April 2015 (New Activity / Unrest)
On 20 April GeoNet reported that it had been three weeks since anomalous seismicity at Tongariro's Ngauruhoe cone had been detected. In addition, no anomalous ground temperatures or unusual levels of gas emissions were detected at the summit during fieldwork, indicating that the minor unrest had ceased. The Volcanic Alert Level was lowered to 0 (on a scale of 0-5). ... Read all
Wed, 18 Mar 2015, 06:00
Tongariro volcano (North Island, New Zealand) - Smithsonian / USGS Weekly Volcanic Activity Report for 18 March-24 March 2015 (New Activity / Unrest)
On 23 March GeoNet reported that during the previous two to three weeks an increase in the number and magnitude of earthquakes at Tongariro was detected by the seismographs around Ngauruhoe. The earthquakes were shallow, with depths less than 5 km. The report noted that although earthquakes are not unusual near Ngauruhoe, it had been some time since significant numbers or events above M 1 were recorded. ... Read all