| Experiments on Exploration of Shallow Fine Structures and the Construction of the 1-D Velocity Model in the Pingtan Island, Fujian |
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| 作者姓名： | GUO Yang XU Jiajun LIN Chen JIN Xing YAO Huajian YANG Hongfeng CAI Huiteng |
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| 作者单位： | Fujian Earthquake Agency, Fuzhou 350003, China,Fujian Earthquake Agency, Fuzhou 350003, China;School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China,Fujian Earthquake Agency, Fuzhou 350003, China,Fujian Earthquake Agency, Fuzhou 350003, China,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China,Earth System Science Programme, Faculty of Science, The Chinese University of Hong Kong, Hong Kong 999077, China,Fujian Earthquake Agency, Fuzhou 350003, China;School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China |
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| 基金项目： | This project was sponsored by the Key Technologies R&D Program of Fujian Earthquake Agency (G201703) and the Seismic Science and Technology Spark Program, CEA (XH19023Y). |
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| 摘 要： | 112 short-period seismographs were set up in the 400km2 area of Pingtan Island and its surrounding areas in Fujian. The combined observations of the airgun source and ambient noise source were carried out using a dense array to receive the 387 airgun signals excited around the island and one month of continuous ambient noise recording. The 1-D P-wave and S-wave shallow velocity model of Pingtan Island is obtained by the inversion of the airgun body wave''s first arrival time data, and the reliability of the velocity model is verified by using the surface wave phase velocity dispersion curve, which can provide initial model for subsequent 3-D imaging. The experimental results show that this experiment is a successful demonstration of local scale green non-destructive detection, which can provide basic data for shallow surface structure research and strong vibration simulation of the Pingtan Island.
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| 关 键 词： | Pingtan Island Fujian Dense array Airgun Ambient noise 1-D velocity model |
| 收稿时间： | 2019/1/26 0:00:00 |
| 修稿时间： | 2019/3/18 0:00:00 |
Experiments on Exploration of Shallow Fine Structures and the Construction of the 1-D Velocity Model in the Pingtan Island, Fujian |
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| GUO Yang,XU Jiajun,LIN Chen,JIN Xing,YAO Huajian,YANG Hongfeng,CAI Huiteng.Experiments on Exploration of Shallow Fine Structures and the Construction of the 1-D Velocity Model in the Pingtan Island, Fujian[J].Earthquake Research in China,2019,33(2):265-275. |
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| Authors: | GUO Yang XU Jiajun LIN Chen JIN Xing YAO Huajian YANG Hongfeng and CAI Huiteng |
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| Institution: | Fujian Earthquake Agency, Fuzhou 350003, China,Fujian Earthquake Agency, Fuzhou 350003, China;School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China,Fujian Earthquake Agency, Fuzhou 350003, China,Fujian Earthquake Agency, Fuzhou 350003, China,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China,Earth System Science Programme, Faculty of Science, The Chinese University of Hong Kong, Hong Kong 999077, China and Fujian Earthquake Agency, Fuzhou 350003, China;School of Earth Sciences and Engineering, Nanjing University, Nanjing 210046, China |
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| Abstract: | 112 short-period seismographs were set up in the 400km2 area of Pingtan Island and its surrounding areas in Fujian. The combined observations of the airgun source and ambient noise source were carried out using a dense array to receive the 387 airgun signals excited around the island and one month of continuous ambient noise recording. The 1-D P-wave and S-wave shallow velocity model of Pingtan Island is obtained by the inversion of the airgun body wave''s first arrival time data, and the reliability of the velocity model is verified by using the surface wave phase velocity dispersion curve, which can provide initial model for subsequent 3-D imaging. The experimental results show that this experiment is a successful demonstration of local scale green non-destructive detection, which can provide basic data for shallow surface structure research and strong vibration simulation of the Pingtan Island. |
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| Keywords: | Pingtan Island Fujian Dense array Airgun Ambient noise 1-D velocity model |
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