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Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing

Author

Listed:
  • Jianmin Lin

    (Zhejiang University
    Donghai Laboratory)

  • Sunke Fang

    (Zhejiang University)

  • Runjing He

    (Zhejiang University)

  • Qunshu Tang

    (Zhejiang University
    Donghai Laboratory)

  • Fengzhong Qu

    (Zhejiang University
    Donghai Laboratory)

  • Baoshan Wang

    (University of Science and Technology of China
    University of Science and Technology of China)

  • Wen Xu

    (Zhejiang University
    Donghai Laboratory)

Abstract

In situ observations under typhoon conditions are sparse and limited. Distributed acoustic sensing (DAS) is an emerging technology that uses submarine optical-fiber (OF) cables to monitor the sea state. Here, we present DAS-based ocean current observations when a super typhoon passed overhead. The microseismic noise induced by ocean surface gravity waves (OSGWs) during Typhoon Muifa (2022) is observed in the ~0.08–0.38 Hz frequency band, with high-frequency (>0.3 Hz) component being tidally modulated. The OSGW propagation along the entire cable is successfully revealed via frequency–wavenumber analysis. Further, a method based on the current-induced Doppler shifts of DAS-recorded OSGW dispersions is proposed to calculate both speeds and directions of horizontal ocean currents. The measured current is consistent with the tidally induced sea-level fluctuations and sea-surface winds observed at a nearby ocean buoy. These observations demonstrate the feasibility of monitoring the ocean current under typhoon conditions using DAS-instrumented cables.

Suggested Citation

  • Jianmin Lin & Sunke Fang & Runjing He & Qunshu Tang & Fengzhong Qu & Baoshan Wang & Wen Xu, 2024. "Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45412-x
    DOI: 10.1038/s41467-024-45412-x
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    References listed on IDEAS

    as
    1. Guihua Wang & Lingwei Wu & Wei Mei & Shang-Ping Xie, 2022. "Ocean currents show global intensification of weak tropical cyclones," Nature, Nature, vol. 611(7936), pages 496-500, November.
    2. Ethan F. Williams & María R. Fernández-Ruiz & Regina Magalhaes & Roel Vanthillo & Zhongwen Zhan & Miguel González-Herráez & Hugo F. Martins, 2019. "Distributed sensing of microseisms and teleseisms with submarine dark fibers," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    3. I. Grevemeyer & R. Herber & H.-H. Essen, 2000. "Microseismological evidence for a changing wave climate in the northeast Atlantic Ocean," Nature, Nature, vol. 408(6810), pages 349-352, November.
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