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Welcome, haere mai to another GeoNet Data Blog. Today we look at different options for visualising categorical time-series data using the record of historic volcanic activity at Tongariro.


Our researchers have created a short survey to help understand Rotorua and Taupō district residents' views on different hazards.


Monday 14 November was the sixth anniversary of the M7.8 Kaikōura Earthquake, and we looked into what earthquake forecasts are all about, today we explore how and why we make them.


Minor volcanic unrest continues at Taupō Volcano, as shown by continued small earthquakes and ground deformation. The Volcanic Alert Level remains at 1 (minor volcanic unrest).


At 12.02 a.m., on Monday 14 November 2016 NZDT, a magnitude 7.8 earthquake struck 15 km north-east of Culverden, North Canterbury, starting near the town of Waiau. It was New Zealand’s most complex earthquake ever recorded, with more than 20 faults rupturing.


World Tsunami Awareness Day was coined in 2015, with the UN calling on countries to mark 5 November as a day to raise tsunami awareness and share approaches to risk reduction. Tsunamis are rare events but can be extremely deadly, and they needn’t be. With early warnings communities can take early action to protect people, save lives and prevent the hazard from becoming a disaster.


We made some exciting changes to our website today, 1 November 2022, with some new data as well as some layout changes that you may have noticed when visiting. We go through them all below.


GNS Science Volcanic Fluid Geochemist Ery Hughes gives us an update on what’s been happening at Taupō volcano since the Volcanic Alert Level was increased to Level 1 on 20 September 2022.


An observation flight confirms the active vents are continuing to emit a moderate steam and gas plume. Rare periods of ash emission were noted during clear weather over the last 2 weeks. The Volcanic Alert Level remains at 2.


Minor volcanic unrest continues at Taupō Volcano, with ongoing earthquakes and ground deformation. The Volcanic Alert Level for Taupō Volcano remains at 1 (minor volcanic unrest).