While rapidly advancing science gives our volcano team a wide range of remote monitoring tools to keep a close eye on our active volcanoes, hands-on data collection remains valuable. We recently worked closely with the Bay of Plenty Regional Council Harbourmaster to explore ways to monitor gases at Whakaari/White Island from a vessel.
An observation flight has confirmed that no ash is currently present in the volcanic plume at Whakaari. On 28 August, some short-lived minor eruptive activity was observed and produced a thin covering of ash across the island. There is no eruptive activity currently occurring. The Volcanic Alert Level remains at level 2 and the Aviation Colour Code remains Yellow.
At 10.15 am local time, a minor, short-lived eruption started at Whakaari/White Island. This generated a plume which rose to less than 1 km above sea level and contained minor amounts of volcanic ash. The wind then dispersed the plume towards the north-east. The Volcanic Alert Level remains at level 2 and the Aviation Colour Code remains Yellow.
Te Wai ā-moe (Ruapehu Crater Lake) is now heating again. Since mid-July the lake temperature has been rising and is now 16 °C. Earthquake, volcano gas, lake chemistry and volcanic tremor data are all within typical ranges, and no unusual changes have been observed. The Volcanic Alert Level remains at 1 and the Aviation Colour Code at Green.
GeoNet has installed a new tsunami gauge at Port Taranaki, strengthening New Zealand’s ability to monitor and respond to tsunami threats along the west coast of the North Island.
Over the past week, two unrelated small clusters of earthquakes have caught the attention of locals. While none of the quakes were large, they offer fascinating insights into the dynamic forces at work beneath our feet. Let’s take a closer look at what triggered these recent shakes and what they tell us about Aotearoa New Zealand’s restless geology.
On Wednesday 30 July at 11:25am (New Zealand Time) a magnitude 8.8 earthquake occurred off the east coast of Kamchatka in the far east of Russia. We take a look at the impacts one of the largest earthquake events recorded, on modern seismic equipment, had on Aotearoa New Zealand.
When we hear the word “tsunami,” we often imagine towering waves crashing onto shorelines. However, tsunami behave more like fast-flowing tides than regular ocean waves, carrying water and debris in and offshore and generating strong currents as they do so. While a small tsunami is unlikely to sweep over people and structures, they still pose serious risks to people in the water or on small boats.
The national tsunami advisory has now been cancelled following the M8.8 Kamchatka Russia Earthquake that occurred on Wednesday 30 July.
Welcome, haere mai to another GeoNet Data Blog. Today’s blog is about how you can visualise data in spreadsheets.