Finite-frequency traveltime sensitivity kernel based on second-order Born approximation
文献类型：期刊论文
| 作者 | Dong Xing-Peng1,2; Teng Ji-Wen1; Ma Xue-Ying1,2; Song Peng-Han1,2 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2016-03-01 |
| 卷号 | 59期号:3页码:1070-1081 |
| 关键词 | Second-order Born approximation Finite-frequency theory Frechet kernel Wave front healing |
| DOI | 10.6038/cjg20160327 |
| 文献子类 | Article |
| 英文摘要 | Finite-frequency tomography has the better resolution to velocity anomalies than ray tomography because it considers scattering, diffraction and wave front healing when seismic waves propagate in an inhomogeneous medium. Derivation and calculation of the finite-frequency sensitive kernel is the key in finite-frequency tomography. This kernel can be derived by the first order Born approximation, but only applicable to a weak scattering medium. Based on the second order Born approximation and by using the Fourier transform, we deduce the analytical expression of the finite-frequency sensitive kernel in a three-dimensional homogeneous medium, and extend it to the inhomogeneous medium to obtain such a kernel in a 3D inhomogeneous medium. Research shows that when the medium velocity disturbance is less than 2%, the difference of kernels between based on the second Born approximation and based on first-order Born approximation is small, so both can be considered identical. When medium velocity disturbance is greater than 5%, such difference is relatively large, implying that secondary scattering cannot be ignored. |
| WOS关键词 | SURFACE-WAVE TOMOGRAPHY ; FRECHET KERNELS ; ADJOINT METHODS ; ARRIVAL TIMES ; SEISMIC-WAVE ; DELAY TIMES ; MANTLE |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000371754700027 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62020]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong Xing-Peng,Teng Ji-Wen,Ma Xue-Ying,et al. Finite-frequency traveltime sensitivity kernel based on second-order Born approximation[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2016,59(3):1070-1081. |
| APA | Dong Xing-Peng,Teng Ji-Wen,Ma Xue-Ying,&Song Peng-Han.(2016).Finite-frequency traveltime sensitivity kernel based on second-order Born approximation.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,59(3),1070-1081. |
| MLA | Dong Xing-Peng,et al."Finite-frequency traveltime sensitivity kernel based on second-order Born approximation".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 59.3(2016):1070-1081. |
入库方式： OAI收割
来源：地质与地球物理研究所
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