Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator
The harsh and extreme environmental and near surface conditions of the Tibetan Plateau have limited the conventional electrical-based seismic instruments from obtaining high-quality seismic data through long-term and continuous observations, setting challenges for environmental seismology study and...
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| Format: | Article |
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Frontiers Media S.A.
2023-01-01
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| Series: | Frontiers in Earth Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/feart.2022.1018116/full |
| _version_ | 1797956220140650496 |
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| author | Jizhong Yang Jizhong Yang Jian Zhou Heng Zhang Tuanwei Xu Tuanwei Xu Dimin Deng Jianhua Geng |
| author_facet | Jizhong Yang Jizhong Yang Jian Zhou Heng Zhang Tuanwei Xu Tuanwei Xu Dimin Deng Jianhua Geng |
| author_sort | Jizhong Yang |
| collection | DOAJ |
| description | The harsh and extreme environmental and near surface conditions of the Tibetan Plateau have limited the conventional electrical-based seismic instruments from obtaining high-quality seismic data through long-term and continuous observations, setting challenges for environmental seismology study and natural hazard monitoring in this area. Distributed acoustic sensing (DAS) is an emerging technique based on optical fiber communication and sensing. It provides a possible solution for subsurface imaging in extreme conditions at high spatiotemporal resolution by converting fiber-optic cables into dense seismic strainmeters. We deploy two survey lines with armored optical fiber cables in the Yigong Lake area, Southeastern Tibetan Plateau, to record ambient noise for a week. The DAS interrogator is specifically designed in a portable size with very low power consumption (25 W/h). Hence, we can use a 12V-DC battery for power supply to adjust the power limitation during the field recording. Ambient noise interferometry and multichannel analysis of surface waves are used to get 2D shear wave velocity profiles along the fiber paths. The results highlight the great potential of DAS for dynamic monitoring of the geological evolution of lakes and rivers in areas of extreme environments as in the Tibetan Plateau. |
| first_indexed | 2024-04-10T23:46:38Z |
| format | Article |
| id | doaj.art-14d1961a4adb413184c5a5b713e2814e |
| institution | Directory Open Access Journal |
| issn | 2296-6463 |
| language | English |
| last_indexed | 2024-04-10T23:46:38Z |
| publishDate | 2023-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Earth Science |
| spelling | doaj.art-14d1961a4adb413184c5a5b713e2814e2023-01-11T04:26:57ZengFrontiers Media S.A.Frontiers in Earth Science2296-64632023-01-011010.3389/feart.2022.10181161018116Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogatorJizhong Yang0Jizhong Yang1Jian Zhou2Heng Zhang3Tuanwei Xu4Tuanwei Xu5Dimin Deng6Jianhua Geng7State Key Laboratory of Marine Geology, Tongji University, Shanghai, ChinaShanghai Sheshan National Geophysical Observatory, Shanghai, ChinaSchool of Ocean and Earth Science, Tongji University, Shanghai, ChinaState Key Laboratory of Tibetan Plateau Earth System, Environment and Resources (TPESER), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Transducer Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaCollege of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Transducer Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Marine Geology, Tongji University, Shanghai, ChinaThe harsh and extreme environmental and near surface conditions of the Tibetan Plateau have limited the conventional electrical-based seismic instruments from obtaining high-quality seismic data through long-term and continuous observations, setting challenges for environmental seismology study and natural hazard monitoring in this area. Distributed acoustic sensing (DAS) is an emerging technique based on optical fiber communication and sensing. It provides a possible solution for subsurface imaging in extreme conditions at high spatiotemporal resolution by converting fiber-optic cables into dense seismic strainmeters. We deploy two survey lines with armored optical fiber cables in the Yigong Lake area, Southeastern Tibetan Plateau, to record ambient noise for a week. The DAS interrogator is specifically designed in a portable size with very low power consumption (25 W/h). Hence, we can use a 12V-DC battery for power supply to adjust the power limitation during the field recording. Ambient noise interferometry and multichannel analysis of surface waves are used to get 2D shear wave velocity profiles along the fiber paths. The results highlight the great potential of DAS for dynamic monitoring of the geological evolution of lakes and rivers in areas of extreme environments as in the Tibetan Plateau.https://www.frontiersin.org/articles/10.3389/feart.2022.1018116/fulldistributed acoustic sensingsedimentary thicknessTibetan Plateauambient noise tomographyseismic interferometry |
| spellingShingle | Jizhong Yang Jizhong Yang Jian Zhou Heng Zhang Tuanwei Xu Tuanwei Xu Dimin Deng Jianhua Geng Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator Frontiers in Earth Science distributed acoustic sensing sedimentary thickness Tibetan Plateau ambient noise tomography seismic interferometry |
| title | Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator |
| title_full | Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator |
| title_fullStr | Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator |
| title_full_unstemmed | Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator |
| title_short | Revealing the shallow soil structure of the Yigong Lake in the Tibetan Plateau using a portable distributed acoustic sensing interrogator |
| title_sort | revealing the shallow soil structure of the yigong lake in the tibetan plateau using a portable distributed acoustic sensing interrogator |
| topic | distributed acoustic sensing sedimentary thickness Tibetan Plateau ambient noise tomography seismic interferometry |
| url | https://www.frontiersin.org/articles/10.3389/feart.2022.1018116/full |
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