Optical-fibre cables could spot tsunamis or the effect of climate change on currents, researchers say.
Internet cables that crisscross the sea-floor could be use to detect earthquakes and tsunamis or monitor how climate change alters ocean currents.
"70% of the Earth's surface is water but all the seismic stations are on land, because it is too difficult and expensive to install permanent sensors on the seafloor" Dr Giuseppe Marra of the NPL told the BBC.It is estimated there are more than 430 around the world, spanning distances of 1.
"If we apply this technique to a large number of cables", Dr Mara said, "we could transform this underwater infrastructure into a giant array of detectors for earthquakes, ocean currents and more. And the technique opened other possibilities, such as monitoring deep-water currents for changes caused by global warming.
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