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Fibre optic distributed acoustic sensing of volcanic events

Author

Listed:
  • Philippe Jousset

    (GFZ, German Research Centre for Geosciences, Telegrafenberg)

  • Gilda Currenti

    (Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo)

  • Benjamin Schwarz

    (GFZ, German Research Centre for Geosciences, Telegrafenberg)

  • Athena Chalari

    (Silixa Ltd., Silixa House, 230 Centennial Park)

  • Frederik Tilmann

    (GFZ, German Research Centre for Geosciences, Telegrafenberg
    Freie Universität Berlin)

  • Thomas Reinsch

    (GFZ, German Research Centre for Geosciences, Telegrafenberg
    Fraunhofer IEG, Fraunhofer Research Institution for Energy Infrastructures and Geothermal Systems IEG, Am Hochschulcampus 1 IEG)

  • Luciano Zuccarello

    (Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Pisa
    University of Liverpool)

  • Eugenio Privitera

    (Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Etneo)

  • Charlotte M. Krawczyk

    (GFZ, German Research Centre for Geosciences, Telegrafenberg
    Technical University Berlin)

Abstract

Understanding physical processes prior to and during volcanic eruptions has improved significantly in recent years. However, uncertainties about subsurface structures distorting observed signals and undetected processes within the volcano prevent volcanologists to infer subtle triggering mechanisms of volcanic phenomena. Here, we demonstrate that distributed acoustic sensing (DAS) with optical fibres allows us to identify volcanic events remotely and image hidden near-surface volcanic structural features. We detect and characterize strain signals associated with explosions and locate their origin using a 2D-template matching between picked and theoretical wave arrival times. We find evidence for non-linear grain interactions in a scoria layer of spatially variable thickness. We demonstrate that wavefield separation allows us to incrementally investigate the ground response to various excitation mechanisms. We identify very small volcanic events, which we relate to fluid migration and degassing. Those results provide the basis for improved volcano monitoring and hazard assessment using DAS.

Suggested Citation

  • 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.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29184-w
    DOI: 10.1038/s41467-022-29184-w
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    References listed on IDEAS

    as
    1. 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.
    2. Yifei Mo & Kevin T. Turner & Izabela Szlufarska, 2009. "Friction laws at the nanoscale," Nature, Nature, vol. 457(7233), pages 1116-1119, February.
    3. F. Walter & D. Gräff & F. Lindner & P. Paitz & M. Köpfli & M. Chmiel & A. Fichtner, 2020. "Distributed acoustic sensing of microseismic sources and wave propagation in glaciated terrain," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
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    Cited by:

    1. Jiaxuan Li & Weiqiang Zhu & Ettore Biondi & Zhongwen Zhan, 2023. "Earthquake focal mechanisms with distributed acoustic sensing," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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