Ruapehu crater pours out SO2
Sulphur dioxide output from the crater of Mt Ruapehu remained at very high levels on Saturday after Institute of Geological and Nuclear Sciences staff wamed that there was a "significant gas hazard" on Friday. The scientists warned that the gas could be hazardous on the upper slopes, and possibly beyond, in suitable wind conditions. The gas was flowing down the leeward slopes of the mountain rather than ris-
ing to disperse in the higher atmosphere. The gas discharge is about twice the size of ones recorded at other erupting volcanoes such as Pinatubo and Etna. The gas plume drifted north on Friday and led to Taupo Airport being closed temporarily. IGNS observors flew over the crater on Saturday and obtained 'excellent views' into the active crater area where the lake once was and saw that a lava dome had begun to form on
the crater floor, which would be consistent with the change in seismic activity of the previous 24 - 36 hours.
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Ruapehu Bulletin, Volume 13, Issue 609, 24 October 1995, Page 1
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167Ruapehu crater pours out SO2 Ruapehu Bulletin, Volume 13, Issue 609, 24 October 1995, Page 1
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