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About once a month the GeoNet volcano gas team make gas flights about our active volcanoes; White Island (Whakaari), Ruapehu, Ngauruhoe  and Tongariro (Te Maari). However the weather has a big say in this. Last week we have had suitable fine weather and the team completed a set of measurements at White Island (Whakaari). The flight was completed at White Island on Friday using a float plane from Rotorua. White Island was active in August http://info.geonet.org.nz/pages/viewpage.action?…
Overnight on Tuesday a moderately large avalanche flowed into the Crater Lake at Mt Ruapehu, with approximately 30 000 tons of ice and snow slipping in to the lake. The GeoNet seismographs near the summit of Mt Ruapehu recorded the ground vibration caused by the avalanche, appearing as a ‘unusual’ earthquake that in someways looked like a volcanic earthquake. Our Crater Lake temperature sensor recorded a rapid drop in the temperature of the lake, from 15 to 8 °C.…

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