Researchers in Iceland have successfully used an existing fibre-optic communications cable to assess seismic activity. Earthquake detection is going to be more easy and faster to detect than ever before in human history, thanks to a new technology.

This is not the first time fibre optic cables have been laid for human benefit. Such cables are laid beneath the ground in countries around the world, to supply internet and television service.The technique has proven sensitive to ground shaking, but is not yet ready for widespread use.It joins a series of recent advances in earthquake sensing, including smartphone apps and more affordable detection hardware.

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https://www.infocontemporary.com/2018/07/06/latest-earthquake-detection-technology-will-save-lives/