| Research of Background Noise Characteristics of the Zhangzhou Seismic Array |
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| 作者姓名： | Zheng Zhong Hao Chunyue Huang Zhao Zhang Shuang |
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| 作者单位： | Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia,Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia,Earthquake Disaster Prevention Center, Earthquake Administration of Fujian Province, Fuzhou 350003, China,Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia |
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| 基金项目： | This project was sponsored by the Earthquake Monitoring System Operational Program of Department of Earthquake Monitoring and Prediction, CEA, in 2016 (2200404). |
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| 摘 要： | The data recorded during the site survey in the Zhangzhou area in Fujian Province between October 23, 2007 and December 3, 2007 was analyzed. The main methods adopted for the noise level of this area are the noise root mean square (RMS), noise power spectrum density and noise coherency function. The results indicate that the noise levels of the survey sites are higher in the 1s-10s periods, which is the main frequency band of preliminary microseism, and also, two main noise sources were found in 1.5Hz and around 5Hz. According to arithmetic, the direction and frequency band of the noise source were analyzed and academic proofs were presented. At last, we found that the noise source in 1.5Hz was made by the water wave aroused by the wind in the reservoir region and the noise source around 5Hz was made by the power station in the northeast direction.
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| 关 键 词： | Small aperture seismic array Space noise field Array design Noise source |
| 收稿时间： | 2014/9/16 0:00:00 |
| 修稿时间： | 2016/9/9 0:00:00 |
Research of Background Noise Characteristics of the Zhangzhou Seismic Array |
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| Zheng Zhong,Hao Chunyue,Huang Zhao,Zhang Shuang.Research of Background Noise Characteristics of the Zhangzhou Seismic Array[J].Earthquake Research in China,2017,31(4):548-559. |
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| Authors: | Zheng Zhong Hao Chunyue Huang Zhao and Zhang Shuang |
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| Institution: | Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia,Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia,Earthquake Disaster Prevention Center, Earthquake Administration of Fujian Province, Fuzhou 350003, China and Institute of Geophysics, China Earthquake Administration, Beijing 100081, Chnia |
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| Abstract: | The data recorded during the site survey in the Zhangzhou area in Fujian Province between October 23, 2007 and December 3, 2007 was analyzed. The main methods adopted for the noise level of this area are the noise root mean square (RMS), noise power spectrum density and noise coherency function. The results indicate that the noise levels of the survey sites are higher in the 1s-10s periods, which is the main frequency band of preliminary microseism, and also, two main noise sources were found in 1.5Hz and around 5Hz. According to arithmetic, the direction and frequency band of the noise source were analyzed and academic proofs were presented. At last, we found that the noise source in 1.5Hz was made by the water wave aroused by the wind in the reservoir region and the noise source around 5Hz was made by the power station in the northeast direction. |
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| Keywords: | Small aperture seismic array Space noise field Array design Noise source |
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