New system for monitoring earthquake

New system for monitoring earthquake

1. An experiment by researchers turned a 20 kilometre section of undersea fibre-optic cable into the equivalent of 10,000 seismic stations monitoring quakes along the ocean floor.
2. The researchers measured the scattering at every two metres of the cable, and turned a 20-kilometre section into 10,000 individual motion sensors.
3. The scientists hope to use the dense fibre-optic networks around the world, spanning more than 10 million kilometers, on both land and under the sea to measure the sensitive seismic movements on the Earth.
4. The technique could be used to map a previously unknown fault system, and observe several dynamic tidal and storm-driven processes in the water column above.
5. This is really a study on the frontier of seismology, the first time anyone has used offshore fibre-optic cables for looking at these types of oceanographic signals or for imaging fault structures.

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