A moment tensor inversion approach based on the correlation between defined functions and waveforms
文献类型：期刊论文
| 作者 | Kong Yue5; Li Min5 ; Chen WM(陈伟民)3,4; Liu Ning2; Kang Boqi1
|
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2021-03-01 |
| 卷号 | 312页码:17 |
| 关键词 | Moment tensor Correlation Noise Multiple sources |
| ISSN号 | 0031-9201 |
| DOI | 10.1016/j.pepi.2021.106674 |
| 通讯作者 | Chen, Weimin(wmchen@imech.ac.cn) |
| 英文摘要 | The moment tensor inversion is a commonly-used method to interpret source mechanisms of microseismicity. In the inversion for real data (e.g. microseismicity recorded during hydraulic fracturing), the waveforms recorded by sensors can be the mixtures of signals and noise, or the superposition of signals generated by multiple sources. Then the traditional approach may result in inaccurate solutions. In this article, we developed a new inversion approach based on the correlation between waveforms and correlation functions, which are defined based on the characteristics of signals. The correlation function determined by specific parameters is more sensitive to the signal generated by a specific source, and less sensitive to noise or signals generated by other sources. Then the correlation coefficient calculated by multiplying the waveform and correlation function is mainly determined by the signal. The moment-tensor solutions calculated by the correlation coefficients are more accurate. The new inversion approach was evaluated by synthetic tests. For noise filtering, compared with tradition inversion approaches, the new approach can improve the inversion accuracy by more than 50% at various noise levels. For multiple sources discrimination, the new approach can discriminate signals generated by multiple sources and provide more accurate inversion results for the sources simultaneously, but the application of the method is limited. This new inversion approach aims to provide accurate solutions in a very simple way, when the waveforms are distorted. |
| 分类号 | Q3 |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA22000000] ; National Natural Sciences Foundation[41804134] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000628451200001 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Sciences Foundation |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86308]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Chinese Acad Sci, Technol & Engn Ctr Space Utilizat, Key Lab Space Utilizat, Beijing 100094, Peoples R China 2.Beijing Univ Chem Technol, Coll Mech & Elect Engn, Beijing 100029, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 5.Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100083, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Kong Yue,Li Min,Chen WM,et al. A moment tensor inversion approach based on the correlation between defined functions and waveforms[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2021,312:17. |
| APA | Kong Yue,Li Min,陈伟民,Liu Ning,&Kang Boqi.(2021).A moment tensor inversion approach based on the correlation between defined functions and waveforms.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,312,17. |
| MLA | Kong Yue,et al."A moment tensor inversion approach based on the correlation between defined functions and waveforms".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 312(2021):17. |
入库方式： OAI收割
来源：力学研究所
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