Correlations of the deep structural characteristics, tidal stress variation and earthquake initiation along the Xianshuihe-Anninghe fault zone
文献类型：期刊论文
| 作者 | Liu GuanNan; Wang Zhi1,3,4 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2020 |
| 卷号 | 63期号:3页码:928 |
| 关键词 | Xianshuihe-Anninghe Fault zone Seismic tomography Earthquake initiation deep structure Earth tide |
| DOI | 10.6038/cjg2020N0206 |
| 英文摘要 | The correlation of earthquake initiation, deep structural heterogeneities and stress variation associated with the solid earth tide was discussed based on Three-Dimensional (3D) tomography and Schuster's test accordingly along the Xianshuihe-Anninghe Fault zone (XAF). The seismic structures were obtained by inverting 241, 561 P-wave and S-wave 209,363 travel times from high quality datasets. Results show that anomalies of low velocity and high Poisson's ratio are present at 26. 5 degrees N, 28 degrees N, 29. 5 degrees N and 31. 5 degrees N along the XAF, which can be interpreted as fluids (partial melt of deep material) intrusion from the lower crust and/or uppermost mantle. These fluids presumably raises pore fluid pressure of seismogenic layers and reduce the frictions in fault planes, generating several high-seismicity areas along the XAF. Besides, the results of tidal phase analysis and Schuster's tests indicate that there is a high correlation between earthquake initiation and tidal shear stress variation. A comprehensive analysis illustrates that the solid earth tide and the tectonic stress have a joint effect on earthquake initiation, which is possibly more sensitive to solid earth tide at locations with widespread fluids. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18575]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Southern Marine Sci & Engn Guangdong Lab, Guangzhou 510301, Peoples R China 2.Chinese Acad Sci, Innovat Acad South China Sea Ecol & Environm Engn, Guangzhou 510301, Peoples R China 3.Chengdu Univ Technol, Coll Geophys, Chengdu 610059, Peoples R China 4.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu GuanNan,Wang Zhi. Correlations of the deep structural characteristics, tidal stress variation and earthquake initiation along the Xianshuihe-Anninghe fault zone[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2020,63(3):928, 943. |
| APA | Liu GuanNan,&Wang Zhi.(2020).Correlations of the deep structural characteristics, tidal stress variation and earthquake initiation along the Xianshuihe-Anninghe fault zone.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,63(3),928. |
| MLA | Liu GuanNan,et al."Correlations of the deep structural characteristics, tidal stress variation and earthquake initiation along the Xianshuihe-Anninghe fault zone".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 63.3(2020):928. |
入库方式： OAI收割
来源：南海海洋研究所
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