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Creep-dilatancy development at a transform plate boundary

Author

Listed:
  • Nabil Sultan

    (Ifremer, CNRS, UBO, UBS)

  • Shane Murphy

    (Ifremer, CNRS, UBO, UBS)

  • Vincent Riboulot

    (Ifremer, CNRS, UBO, UBS)

  • Louis Géli

    (Ifremer, CNRS, UBO, UBS)

Abstract

How tectonic plates slip slowly and episodically along their boundaries, is a major, open question in earthquake science. Here, we use offshore in-situ sediment pore-pressure acquired in the proximity of the active offshore Main Marmara Fault and onshore geodetic time-series data set from a single GPS station to demonstrate the pore-pressure/deformation coupling during a 10-month slow-slip event. We show that pore pressure fluctuations are the expression of hydro-mechanical process affecting the deep seismogenic zone and indicate that small disturbances in geodetic data may have important meaning in terms of transient deformations. These results have major implications in understanding the spatial impact of slow-slip processes and their role in earthquake cycles. We demonstrate that piezometers measuring along a transform fault can help define the time scale regulating the coupling between slow-slip events and earthquake nucleation process.

Suggested Citation

  • Nabil Sultan & Shane Murphy & Vincent Riboulot & Louis Géli, 2022. "Creep-dilatancy development at a transform plate boundary," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29558-0
    DOI: 10.1038/s41467-022-29558-0
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    References listed on IDEAS

    as
    1. Colin B. Amos & Pascal Audet & William C. Hammond & Roland Bürgmann & Ingrid A. Johanson & Geoffrey Blewitt, 2014. "Uplift and seismicity driven by groundwater depletion in central California," Nature, Nature, vol. 509(7501), pages 483-486, May.
    2. Sigurjón Jónsson & Paul Segall & Rikke Pedersen & Grímur Björnsson, 2003. "Post-earthquake ground movements correlated to pore-pressure transients," Nature, Nature, vol. 424(6945), pages 179-183, July.
    3. Nabil Sultan & Andreia Plaza-Faverola & Sunil Vadakkepuliyambatta & Stefan Buenz & Jochen Knies, 2020. "Impact of tides and sea-level on deep-sea Arctic methane emissions," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    4. Víctor M. Cruz-Atienza & Carlos Villafuerte & Harsha S. Bhat, 2018. "Rapid tremor migration and pore-pressure waves in subduction zones," Nature Communications, Nature, vol. 9(1), pages 1-13, December.
    Full references (including those not matched with items on IDEAS)

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