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Distributed sensing of earthquakes and ocean-solid Earth interactions on seafloor telecom cables

Author

Listed:
  • A. Sladen

    (Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur)

  • D. Rivet

    (Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur)

  • J. P Ampuero

    (Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur)

  • L. De Barros

    (Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur)

  • Y. Hello

    (Université Côte d’Azur, CNRS, Observatoire de la Côte d’Azur, IRD, Géoazur)

  • G. Calbris

    (Febus-optics, Technopole Helioparc - 2 av)

  • P. Lamare

    (Aix Marseille Université, CNRS/IN2P3, CPPM)

Abstract

Two thirds of the surface of our planet are covered by water and are still poorly instrumented, which has prevented the earth science community from addressing numerous key scientific questions. The potential to leverage the existing fiber optic seafloor telecom cables that criss-cross the oceans, by using them as dense arrays of seismo-acoustic sensors, remains to be evaluated. Here, we report Distributed Acoustic Sensing measurements on a 41.5 km-long telecom cable that is deployed offshore Toulon, France. Our observations demonstrate the capability to monitor with unprecedented details the ocean-solid earth interactions from the coast to the abyssal plain, in addition to regional seismicity (e.g., a magnitude 1.9 micro-earthquake located 100 km away) with signal characteristics comparable to those of a coastal seismic station.

Suggested Citation

  • A. Sladen & D. Rivet & J. P Ampuero & L. De Barros & Y. Hello & G. Calbris & P. Lamare, 2019. "Distributed sensing of earthquakes and ocean-solid Earth interactions on seafloor telecom cables," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-13793-z
    DOI: 10.1038/s41467-019-13793-z
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    Cited by:

    1. Philippe Jousset & Gilda Currenti & Benjamin Schwarz & Athena Chalari & Frederik Tilmann & Thomas Reinsch & Luciano Zuccarello & Eugenio Privitera & Charlotte M. Krawczyk, 2022. "Fibre optic distributed acoustic sensing of volcanic events," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    2. Takeshi Tsuji & Masao Sorai & Masashige Shiga & Shigenori Fujikawa & Toyoki Kunitake, 2021. "Geological storage of CO2–N2–O2 mixtures produced by membrane‐based direct air capture (DAC)," Greenhouse Gases: Science and Technology, Blackwell Publishing, vol. 11(4), pages 610-618, August.

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