New Zealand

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Ngau

These five volcanic centers are about 200 km northeast of White Island. The status of Rumble I and II is uncertain, meaning they may have had activity in the last 10,000 years but the documentation of possible eruptions is questionable. Rumble III is the most active of the remote volcanoes with eruptions in 1958, 1963, 1970, 1973, and 1986. The eruptions were detected and located with hydrophones. Fumeroles have been detected at Rumble IV and V. 

Last Updated: December 17, 1997.

Acoutic waves recorded on earthquake instruments on three islands in French Polynesia suggest a possible submarine eruption at Monowai seamount. Monowai seamount is about 1,500 km northeast of North Island, New Zealand. The acoustic waves were recorded from September 19 to 22. Olivier Hyvernaud of the Laboratoire de Geophysique in Papeete, Tahiti is seeking confirmation of the eruption. Monowai has erupted at least eight times in the last twenty years. The 1977 eruption continued for eighteen months