Welcome, haere mai to another GeoNet Data Blog. Today’s blog is about visitors to the GeoNet web site, especially which countries they come from and what material they are looking at.
We recently took a deep dive into what, and where the Hikurangi Subduction Zone is. Today we are going to look at how we monitor and build up our understanding of our largest plate-boundary fault, and better understand its potential impact.
Unusual style of earthquake activity continues at Mt Ruapehu, no changes in overall volcanic activity. The Volcanic Alert Level remains at 1.
Although the unusual earthquakes have continued under Mt Ruapehu, our other monitored parameters have not changed. We continue to measure low-moderate volcanic gas emissions, a slow decline in lake temperature and water level. The last gas flight, Crater Lake water and gas analysis, and visual observations show no changes. A sudden eruption at Mt Ruapehu remains very unlikely. The Volcanic Alert Level remains at 1 and the Aviation Colour Code at Green.
In the North Island of Aotearoa New Zealand, we have our largest plate-boundary fault, the Hikurangi subduction zone. It’s the largest source of earthquake and tsunami hazard in New Zealand. Over the next few weeks, we will take a closer look at this fault and what it means for us.
Whakaari/White Island continues to emit low levels of volcanic gas and steam accompanied by hydrothermal activity. The Volcanic Alert Level remains at Level 2.
Recent flights over Whakaari/White Island to measure gas emissions and observe surface activity showed continued hydrothermal activity, including minor geysering. Low to moderate gas and steam emissions continue. There is no evidence of any volcanic eruptions, and the overall activity remains low. The Volcanic Alert Level remains at level 2.
26 March is the 77th anniversary of the first of two severe earthquakes that occurred off the coast of Tairāwhiti Gisborne in 1947. This earthquake generated one of the largest tsunamis in New Zealand's historical records. It was observed along 115km of coastline and caused damage to beachside cottages and buildings, bridges, fences, and roads.
Uncommon style of earthquake activity at Mt Ruapehu. Volcanic activity remains low, and the Volcanic Alert Level remains at 1.
In addition to a recent drop in lake temperature, in recent weeks Ruapehu has experienced some minor earthquake activity. Although the nature of the earthquakes is quite uncommon for Ruapehu, our analyses since our last bulletin do not raise any concerns. Other monitored parameters have not changed since last week’s bulletin, and volcanic activity remains low. The Volcanic Alert Level remains at 1 and the Aviation Colour Code at Green.
Here in Aotearoa New Zealand, we have faults everywhere, but what exactly are they? And why do they mean we have earthquakes?
Pushmi-Pullyu and Retrieving GeoNet Data
Welcome, haere mai to another GeoNet Data Blog. Today’s blog is about two methods we can use to retrieve data from autonomous recorders installed around Aotearoa-New Zealand. What they are, why we almost exclusively use one method and not the other, and how they deal with communications outages.
Te Wai ā-moe (Crater Lake) heating episode is over at Mt Ruapehu. Volcanic activity remains low, and the Volcanic Alert Level remains at 1.
Te Wai ā-moe (Ruapehu Crater Lake) has started to cool again, marking the end of the heating episode that started mid-October 2023. Temperature is currently 24 °C, down from its peak at 31 ºC on 14 February 2024. Other volcanic monitoring indicators remain within normal ranges and Volcanic activity remains low overall. The Volcanic Alert Level remains at 1 and the Aviation Colour Code at Green.