How New Zealand's warning system for volcanoes works
The Straits Times - Asia·2019-12-11 08:59
WELLINGTON - New Zealand's warning system for volcanoes rates them on a scale of zero to five, with zero indicating no activity, while ratings from three to five mean that an eruption is taking place.
In the weeks before the eruption of the White Island volcano, New Zealand volcano monitoring service GeoNet (GNS) raised its alert level to level 2, which means that low level volcanic activity is taking place.
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