Giant Freshwater Reserve Discovered Deep Under The Seabed Off New Zealand

Giant Freshwater Reserve Discovered Deep Under The Seabed Off New Zealand

by David Nield, Science Alert

A rare freshwater reserve has been discovered underneath the sea off the coast of the South Island of New Zealand, which could help head off future droughts and mitigate the impact of climate change in the coming years.

The offshore freshened groundwater (OFG) was discovered through a combination of seismology and electromagnetic wave scanning techniques, which were used to build up a 3D map of the aquifer under the sea.

While the precise water capacity has yet to be calculated, the researchers think the system could be holding as much as 2,000 cubic kilometers (or nearly 480 cubic miles) of freshwater – that’s 800 million Olympic-sized swimming pools, or more than Lake Ontario.

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