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NZ volcano erupting - under water

New Zealand
UNDERSEA SAGA: You wouldn't know it but a large volcano eruption is taking place in NZ. It's not visible because Monowai is underwater - north of the Kermadec Islands, and is about 1500 metres deep.

Story: You wouldn't know it but a large volcano eruption is taking place in New Zealand. It's not visible because Monowai is completely underwater - north of the Kermadec Islands, and is about 1500 metres deep. Its conical cone reaches to just 120 metres below the surface of the Pacific. They recorded a "big acoustic event on February 8". It was strong "but not a monster". Monowai is in an eruptive phase but it is difficult to say whether the event was a strong eruption. Monowai has erupted regularly over the years. In May 2002 the volcano itself collapsed creating an "explosive interaction and cooling of hot magma and volcaniclastic rubble with ambient seawater". Monowai is similar to Mount St Helen's in the United States which collapsed and then rebuilt itself over time. The latest activity has gone unnoticed on the surface as its location is off the main shipping routes. In previous years Royal New Zealand Air Force over flights have spotted large sulphur slicks. What was thought to be a shoal of fish was first reported in the area in 1944 but it was not until 1977 that it was recognised as a volcano.

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