Using submarine cables to detect earthquakes

Installing seismic sensors on the ocean floor can be a difficult and expensive task. But what if seismic activity could be monitored by using something that's already down there – pre-existing submarine telecommunications cables? Partially supported by the EU-funded FINESSE project, an international team of geoscientists has used fiber optic communications cables at the bottom of the North Sea as a giant seismic network. The team tracked both earthquakes and ocean waves.

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