What question did this study set out to answer?

To achieve spatially resolved environmental and seismic sensing along individual repeater spans of an operational transoceanic submarine cable without modifying undersea infrastructure.

May 19, 2022ScienceOpen Access

Optical interferometry–based array of seafloor environmental sensors using a transoceanic submarine cable

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Authors

GMGiuseppe MarraNational Physical Laboratory DFD. M. FairweatherUniversity of Edinburgh VKValey KamalovCalifornia Institute of Technology

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Implication

Experimental study demonstrates span-resolved seismic and ocean sensing along a transoceanic cable, indicating existing undersea telecommunications can serve as distributed sensor arrays.

Key Points

To achieve spatially resolved environmental and seismic sensing along individual repeater spans of an operational transoceanic submarine cable without modifying undersea infrastructure.
Implemented optical interferometry across individual repeater spans (45 to 90 kilometers each) along a 5860-kilometer transatlantic telecommunication cable.
Measured optical phase perturbations isolated to specific repeater-to-repeater segments to detect localized acoustic and seismic events rather than whole-cable integrated signals.
Successfully detected earthquakes and ocean hydrodynamic signals localized to discrete repeater spans along the 5860-kilometer cable.
Demonstrated that existing global commercial subsea cables can host thousands of continuous real-time seafloor monitoring points without physical hardware modifications.

Cite This Study

Marra et al. (2022) studied this question.

synapsesocial.com/papers/69de9cff7702a00918b0c08a https://doi.org/10.1126/science.abo1939

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Implication

Experimental study demonstrates span-resolved seismic and ocean sensing along a transoceanic cable, indicating existing undersea telecommunications can serve as distributed sensor arrays.

Optical interferometry–based array of seafloor environmental sensors using a transoceanic submarine cable

Discussion

Member takes

Implication

Key Points

Cite This Study

Optical interferometry–based array of seafloor environmental sensors using a transoceanic submarine cable

Discussion

Member takes

Implication

Key Points

Cite This Study

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