Moho imaging based on receiver function analysis with teleseismic wavefield reconstruction: Application to South China
文献类型：期刊论文
| 作者 | Song, Penghan1,2; Zhang, Xuemei3; Liu, Youshan1; Teng, Jiwen1 |
| 刊名 | TECTONOPHYSICS
 |
| 出版日期 | 2017-10-30 |
| 卷号 | 718页码:118-131 |
| ISSN号 | 0040-1951 |
| 关键词 | Moho South China Receiver Function Teleseismic Wavefield Reconstruction Rbf |
| DOI | 10.1016/j.tecto.2017.05.031 |
| 文献子类 | Article |
| 英文摘要 | A detailed and reliable Moho structure can improve our understanding of the tectonic evolution of crust and mantle. Most researchers directly interpolate the imaging results of receiver functions (RFs) from the sparse stations to obtain a continuous Moho image. However, the interpolation process is usually not robust because of the sparse and irregular geometry of seismic networks. In light of the approximate plane-wave feature of the teleseismic wavefront, we introduce the Radial Basis Function (RBF) technique, a high-precision interpolator with strong adaptability, into teleseismic wavefield reconstruction. Then, we use the reconstructed wavefield to image the Moho structure beneath South China with RF analysis. Compared to the conventional H-kappa stacking methods, the Moho that is obtained through this reconstructed wavefield exhibits more details and shows greater consistency to the tectonic provinces. The Moho depths beneath South China gradually shallow from similar to 50 km at the Yangtze Block (YB) in the northwest to similar to 25 km to the southwest of the Cathaysia Block (CB). The V-p/V-s ratio at the YB is similar to 1.80 , decreasing to similar to 1.57 at the Jiangnan Orogen, and then increasing to similar to 1.70 at the CB. Obviously varying Moho depths and V-p/V-s ratios in both the Ganjiang Fault (GF) and Tancheng-Lujiang Fault (TLF) regions is observed, which indicates a great similarity in the deep tectonic environment of the GF and TLF. The mantle corner flow under South China is suspected to invade into the interior of the Yangtze Craton. Teleseismic wavefield reconstruction, as a pre-processing technique, can effectively improve the imaging quality of RF analysis. (C) 2017 The Authors. Published by Elsevier B.V. |
| WOS关键词 | MANTLE DISCONTINUITY STRUCTURE ; BENEATH SOUTHEASTERN CHINA ; TIME-DOMAIN DECONVOLUTION ; DABIE OROGENIC BELT ; TO-S CONVERSIONS ; CRUSTAL STRUCTURE ; TECTONIC EVOLUTION ; CONTINENTAL-CRUST ; INTRACONTINENTAL OROGEN ; ITERATIVE DECONVOLUTION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000414885800010 |
| 资助机构 | National Natural Science Foundation of China(90914012 ; 41274062) ; National Natural Science Foundation of China(90914012 ; 41274062) ; National Natural Science Foundation of China(90914012 ; 41274062) ; National Natural Science Foundation of China(90914012 ; 41274062) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62468]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhang, Xuemei |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.China Earthquake Networks Ctr, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Song, Penghan,Zhang, Xuemei,Liu, Youshan,et al. Moho imaging based on receiver function analysis with teleseismic wavefield reconstruction: Application to South China[J]. TECTONOPHYSICS,2017,718:118-131. |
| APA | Song, Penghan,Zhang, Xuemei,Liu, Youshan,&Teng, Jiwen.(2017).Moho imaging based on receiver function analysis with teleseismic wavefield reconstruction: Application to South China.TECTONOPHYSICS,718,118-131. |
| MLA | Song, Penghan,et al."Moho imaging based on receiver function analysis with teleseismic wavefield reconstruction: Application to South China".TECTONOPHYSICS 718(2017):118-131. |
入库方式： OAI收割
来源：地质与地球物理研究所
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