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The study focused on the region off the coast of Chile, which is prone to powerful and frequent earthquakes due to its active subduction zone.
A new study has found a way to use old telecom cables lying under the sea as earthquake sensors, which could save precious seconds in warning people of impending tremors. The researchers used a method called Distributed Acoustic Sensing to turn 31 miles of fiber optic cable between the US and Chile into thousands of seismic detectors., was led by Jiuxun Yin, a former Caltech researcher who now works at SLB.
Map of the study area in Chile. Red curve is the distributed acoustic sensing array. Black dots are the three earthquakes. Dark red triangles are the permanent seismic stations in this area.due to its active subduction zone. The same is true for the Cascadia region off Canada, the US Pacific Northwest, and even Southern California, where many faults have produced strong quakes. In these densely populated coastal areas, offshore EEW could help save lives and property from earthquake damage.
Yin also revealed that there were more than 1,500 cable landing stations around the globe and that the progress in the technology allowed them to use operational cables and add DAS systems without affecting data transportation. He expressed his belief that this opened up many exciting research opportunities and that he and his colleagues were eager to explore them in future studies.
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