Cook Strait currents
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Cook Strait currents
Cook Strait is not only a bottleneck for wind; as this map shows, tidal currents pour through the narrow gap between the North and South islands. They scour the sea floor and transport gravel back and forth. This makes a harsh environment for cables lying along the seabed. The cables are armoured to protect them from abrasion.
Source: NIWA - National Institute of Water and Atmospheric Research
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Te Ara - The Encyclopedia of New Zealand
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