Using OBS teleseismic receiver functions to invert lithospheric structure-A case study of the southwestern subbasin in the South China Sea
文献类型：期刊论文
| 作者 | Hu Hao1; Ruan Ai-Guo1; You Qing-Yu2; Li Jia-Biao1; Hao Tian-Yao2; Long Jiang-Ping1 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 59期号:4页码:1426-1434 |
| 关键词 | Ocean bottom seismograph Receiver functions Southwestern subbasin in the SCS S-wave velocity structure of oceanic crust Lithosphere structure |
| DOI | 10.6038/cjg20160423 |
| 文献子类 | Article |
| 英文摘要 | Due to the particular seafloor environment and special outer mechanical structure of the ocean bottom seismometer (OBS), there are some problems which have not been solved in the lithospheric structure inversion using OBS teleseismic receiver functions. Based on the analysis of these problems, we combined the Fourier transform and wavelet analysis to suppress the non stationary noise to obtain a better signal-to-noise ratio and clearer seismic phases recorded by the OBSs at the southwestern subbasin in the South China Sea (SCS). The equipment is broadband OBS of I-4C type produced by the Institute of Geology and Geophysics, Chinese Academy of Sciences. We then inverted the lithospheric structure by applying receiver functions to the teleseismic data recorded at the southwestern subbasin of the SCS successfully. The results show that it is feasible to use receiver functions for the inversion of lithosphere structure based on the passive observation data by OBS, in which the key is to suppress the non-stationary noise. The Moho depth in the southwestern subbasin of the SCS is 10 similar to 12 km with crust thickness of 6 similar to 8 km. The shallow crust is a low velocity layer with sediment thickness 1 similar to 2 km which consists of sediment and volcanic clastic breccia produced by magma eruption after spreading cessation. In the spreading axis center there is a low S-wave velocity zone at the depth of 6 km to 12 km above Moho. We interpreted it as the result of partial melting of the lower crust or the presence of a magma chamber. In the same area at the depth of 17 km to 30 km the vertical S-wave velocity gradient is negative. We interpreted it as the result of hot magma supply upward in the mantle. |
| WOS关键词 | NEIGHBORHOOD ALGORITHM ; GEOPHYSICAL INVERSION ; CRUSTAL STRUCTURE ; STRUCTURE BENEATH ; ANISOTROPY ; PARAMETER ; MOHO |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000373864400023 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53466]  |
| 专题 | 地质与地球物理研究所_中国科学院油气资源研究重点实验室 |
| 作者单位 | 1.State Ocean Adm, Inst Oceanog 2, Hangzhou 310012, Zhejiang, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Hao,Ruan Ai-Guo,You Qing-Yu,et al. Using OBS teleseismic receiver functions to invert lithospheric structure-A case study of the southwestern subbasin in the South China Sea[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(4):1426-1434. |
| APA | Hu Hao,Ruan Ai-Guo,You Qing-Yu,Li Jia-Biao,Hao Tian-Yao,&Long Jiang-Ping.(2016).Using OBS teleseismic receiver functions to invert lithospheric structure-A case study of the southwestern subbasin in the South China Sea.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(4),1426-1434. |
| MLA | Hu Hao,et al."Using OBS teleseismic receiver functions to invert lithospheric structure-A case study of the southwestern subbasin in the South China Sea".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.4(2016):1426-1434. |
入库方式： OAI收割
来源：地质与地球物理研究所
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