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Sunday, Feb 25, 2007
Recent visits to White Island’s Crater Lake, including one on 13 February, have confirmed a continual rise in lake temperature since August 2006 from a normal range of 48-50ºC. In January 2007, the temperature reached over 60ºC. The last temperature measurement was 74ºC, the highest ever recorded in the lake. The increased heat flow caused accelerated evaporation, and the lake level has dropped over 6 m. Steam plumes have been observed over the island. A deformation survey of the crater floor showed no significant changes from recent months. |