Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications
The seismic wavefield can be decomposed into three-component translational motions and three-component rotational motions. The rotation components contain important wavefield gradient information and are key elements of seismic wavefield reconstruction. Due to the lack of stable high-sensitivity rot...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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Editorial Office of Reviews of Geophysics and Planetary Physics
2022-01-01
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| Series: | 地球与行星物理论评 |
| Subjects: | |
| Online Access: | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-046 |
| _version_ | 1827978202607255552 |
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| author | Weijun Wang Ling Chen Yibo Wang Fei Peng |
| author_facet | Weijun Wang Ling Chen Yibo Wang Fei Peng |
| author_sort | Weijun Wang |
| collection | DOAJ |
| description | The seismic wavefield can be decomposed into three-component translational motions and three-component rotational motions. The rotation components contain important wavefield gradient information and are key elements of seismic wavefield reconstruction. Due to the lack of stable high-sensitivity rotational measuring instruments, the rotation component was often neglected in different seismological applications in the past. The fiber-optic rotational seismometer, breaking the dilemma of the lack of measuring instruments, is the first commercialized rotating seismometer. It is also the most promising device for direct seismic wave rotation measurement. The fiber-optic rotational seismometer is based on the Sagnac effect and relies on mature fiber-optic gyroscope technology to measure the rotation components of vibration. It has the advantage that pure photoelectric sensor unaffected by translational motions and can be made portable equipment based on high sensitivity and wideband rotation measurement, which is beneficial to the application and promotion of rotation measurement. Therefore, the fiber-optic rotational seismograph and the traditional seismograph will complement each other to observe the six-component (6C) rotational and translational motions, which can extract seismic wavefield characteristics better, and can improve the performance of vibration monitoring, as well as the researches or applications on the seismic source rupture inversion, underground structure imaging and seismic damage mechanism. This article mainly introduces the basic principles of fiber-optic rotation measurement, the application of rotational seismology and its potential prospects. |
| first_indexed | 2024-04-09T21:17:14Z |
| format | Article |
| id | doaj.art-443962a525e54a25bd8d929351e6da80 |
| institution | Directory Open Access Journal |
| issn | 2097-1893 |
| language | zho |
| last_indexed | 2024-04-09T21:17:14Z |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Reviews of Geophysics and Planetary Physics |
| record_format | Article |
| series | 地球与行星物理论评 |
| spelling | doaj.art-443962a525e54a25bd8d929351e6da802023-03-28T07:02:59ZzhoEditorial Office of Reviews of Geophysics and Planetary Physics地球与行星物理论评2097-18932022-01-0153111610.19975/j.dqyxx.2021-0462021-046Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applicationsWeijun Wang0Ling Chen1Yibo Wang2Fei Peng3Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, ChinaState Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaKey Laboratory of Petroleum Resource Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, ChinaInstitute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, ChinaThe seismic wavefield can be decomposed into three-component translational motions and three-component rotational motions. The rotation components contain important wavefield gradient information and are key elements of seismic wavefield reconstruction. Due to the lack of stable high-sensitivity rotational measuring instruments, the rotation component was often neglected in different seismological applications in the past. The fiber-optic rotational seismometer, breaking the dilemma of the lack of measuring instruments, is the first commercialized rotating seismometer. It is also the most promising device for direct seismic wave rotation measurement. The fiber-optic rotational seismometer is based on the Sagnac effect and relies on mature fiber-optic gyroscope technology to measure the rotation components of vibration. It has the advantage that pure photoelectric sensor unaffected by translational motions and can be made portable equipment based on high sensitivity and wideband rotation measurement, which is beneficial to the application and promotion of rotation measurement. Therefore, the fiber-optic rotational seismograph and the traditional seismograph will complement each other to observe the six-component (6C) rotational and translational motions, which can extract seismic wavefield characteristics better, and can improve the performance of vibration monitoring, as well as the researches or applications on the seismic source rupture inversion, underground structure imaging and seismic damage mechanism. This article mainly introduces the basic principles of fiber-optic rotation measurement, the application of rotational seismology and its potential prospects.https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-046rotational and translational motionsrotation measurementfiber-optic vibration sensingfiber-optic rotational seismometerrotational seismology |
| spellingShingle | Weijun Wang Ling Chen Yibo Wang Fei Peng Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications 地球与行星物理论评 rotational and translational motions rotation measurement fiber-optic vibration sensing fiber-optic rotational seismometer rotational seismology |
| title | Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications |
| title_full | Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications |
| title_fullStr | Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications |
| title_full_unstemmed | Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications |
| title_short | Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications |
| title_sort | fiber optic vibration sensing i rotation measurement technique and its seismological applications |
| topic | rotational and translational motions rotation measurement fiber-optic vibration sensing fiber-optic rotational seismometer rotational seismology |
| url | https://www.sjdz.org.cn/en/article/doi/10.19975/j.dqyxx.2021-046 |
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