Constraining the anisotropy structure of the crust by joint inversion of seismic reflection travel times and wave polarizations
文献类型：期刊论文
| 作者 | Chen, Jingyi2; Teng, Jiwen2; Badal, Jose1 |
| 刊名 | JOURNAL OF SEISMOLOGY
 |
| 出版日期 | 2009-04-01 |
| 卷号 | 13期号:2页码:219-240 |
| 关键词 | P-wave travel times Polarization angles Joint inversion Crustal anisotropy Southeastern China |
| ISSN号 | 1383-4649 |
| DOI | 10.1007/s10950-008-9123-1 |
| 文献子类 | Article |
| 英文摘要 | In the context of wide-angle seismic profiling, the determination of the physical properties of the Earth crust, such as the elastic layer depth and seismic velocity, is often performed by inversion of P- and/or S-phases propagation data supplying the geometry of the medium (reflector depths) or any other structural parameter (P- or S-wave velocity, density...). Moreover, the inversion for velocity structure and interfaces is commonly performed using only seismic reflection travel times and/or crustal phase amplitudes in isotropic media. But it is very important to utilize more available information to constrain the non-uniqueness of the solution. In this paper, we present a simultaneous inversion method of seismic reflection travel times and polarizations data of transient elastic waves in stratified media to reconstruct not only layer depth and vertical P-wave velocity but also the anisotropy feature of the crust based on the estimation of the Thomsen's parameters. We carry out a checking with synthetic data, comparing the inversion results obtained by anisotropic travel-time inversion to the results derived by joint inversion of seismic reflection travel times and polarizations data. The comparison proves that the first procedure leads to biased anisotropic models, while the second one fits nearly the real model. This makes the joint inversion method feasible. Finally, we investigate the geometry, P-wave velocity structure and anisotropy of the crust beneath Southeastern China by applying the proposed inversion method to previously acquired wide-angle seismic data. In this case, the anisotropy signature provides clear evidence that the Jiangshan-Shaoxing fault is the natural boundary between the Yangtze and Cathaysia blocks. |
| WOS关键词 | TRANSVERSELY ISOTROPIC MEDIA ; LATERALLY VARYING MEDIA ; VELOCITY STRUCTURE ; SOUTH CHINA ; ELASTIC-ANISOTROPY ; SOUTHEASTERN CHINA ; TECTONIC EVOLUTION ; UPPER-MANTLE ; TTI MEDIA ; OPTIMIZATION |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000264485600004 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/71302]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Badal, Jose |
| 作者单位 | 1.Univ Zaragoza, E-50009 Zaragoza, Spain 2.Chinese Acad Sci, State Key Lab Lithosphere Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jingyi,Teng, Jiwen,Badal, Jose. Constraining the anisotropy structure of the crust by joint inversion of seismic reflection travel times and wave polarizations[J]. JOURNAL OF SEISMOLOGY,2009,13(2):219-240. |
| APA | Chen, Jingyi,Teng, Jiwen,&Badal, Jose.(2009).Constraining the anisotropy structure of the crust by joint inversion of seismic reflection travel times and wave polarizations.JOURNAL OF SEISMOLOGY,13(2),219-240. |
| MLA | Chen, Jingyi,et al."Constraining the anisotropy structure of the crust by joint inversion of seismic reflection travel times and wave polarizations".JOURNAL OF SEISMOLOGY 13.2(2009):219-240. |
入库方式： OAI收割
来源：地质与地球物理研究所
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