Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing
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 overhe...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-02-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-45412-x |
| _version_ | 1797273900960186368 |
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| author | Jianmin Lin Sunke Fang Runjing He Qunshu Tang Fengzhong Qu Baoshan Wang Wen Xu |
| author_facet | Jianmin Lin Sunke Fang Runjing He Qunshu Tang Fengzhong Qu Baoshan Wang Wen Xu |
| author_sort | Jianmin Lin |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-07T14:50:45Z |
| format | Article |
| id | doaj.art-a66836bddd354779953d75c54c8ed100 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-07T14:50:45Z |
| publishDate | 2024-02-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-a66836bddd354779953d75c54c8ed1002024-03-05T19:42:20ZengNature PortfolioNature Communications2041-17232024-02-0115111010.1038/s41467-024-45412-xMonitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensingJianmin Lin0Sunke Fang1Runjing He2Qunshu Tang3Fengzhong Qu4Baoshan Wang5Wen Xu6Key Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityKey Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityKey Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityKey Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityKey Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityDeep Space Exploration Laboratory/School of Earth and Space Sciences, University of Science and Technology of ChinaKey Laboratory of Ocean Observation-Imaging Testbed of Zhejiang Province, Zhejiang UniversityAbstract 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.https://doi.org/10.1038/s41467-024-45412-x |
| spellingShingle | Jianmin Lin Sunke Fang Runjing He Qunshu Tang Fengzhong Qu Baoshan Wang Wen Xu Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing Nature Communications |
| title | Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing |
| title_full | Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing |
| title_fullStr | Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing |
| title_full_unstemmed | Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing |
| title_short | Monitoring ocean currents during the passage of Typhoon Muifa using optical-fiber distributed acoustic sensing |
| title_sort | monitoring ocean currents during the passage of typhoon muifa using optical fiber distributed acoustic sensing |
| url | https://doi.org/10.1038/s41467-024-45412-x |
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