Laplace-Fourier-domain dispersion analysis of an average derivative optimal scheme for scalar-wave equation | |
Chen, Jing-Bo | |
刊名 | GEOPHYSICAL JOURNAL INTERNATIONAL
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2014-06-01 | |
卷号 | 197期号:3页码:1681-1692 |
关键词 | Seismic tomography Computational seismology Wave propagation |
ISSN号 | 0956-540X |
DOI | 10.1093/gji/ggu066 |
英文摘要 | By using low-frequency components of the damped wavefield, Laplace-Fourier-domain full waveform inversion (FWI) can recover a long-wavelength velocity model from the original undamped seismic data lacking low-frequency information. Laplace-Fourier-domain modelling is an important foundation of Laplace-Fourier-domain FWI. Based on the numerical phase velocity and the numerical attenuation propagation velocity, a method for performing Laplace-Fourier-domain numerical dispersion analysis is developed in this paper. This method is applied to an average-derivative optimal scheme. The results show that within the relative error of 1 per cent, the Laplace-Fourier-domain average-derivative optimal scheme requires seven gridpoints per smallest wavelength and smallest pseudo-wavelength for both equal and unequal directional sampling intervals. In contrast, the classical five-point scheme requires 23 gridpoints per smallest wavelength and smallest pseudo-wavelength to achieve the same accuracy. Numerical experiments demonstrate the theoretical analysis. |
语种 | 英语 |
出版者 | OXFORD UNIV PRESS |
WOS记录号 | WOS:000337041100031 |
内容类型 | 期刊论文 |
源URL | [http://ir.iggcas.ac.cn/handle/132A11/85717] ![]() |
专题 | 中国科学院地质与地球物理研究所 |
通讯作者 | Chen, Jing-Bo |
作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Jing-Bo. Laplace-Fourier-domain dispersion analysis of an average derivative optimal scheme for scalar-wave equation[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,2014,197(3):1681-1692. |
APA | Chen, Jing-Bo.(2014).Laplace-Fourier-domain dispersion analysis of an average derivative optimal scheme for scalar-wave equation.GEOPHYSICAL JOURNAL INTERNATIONAL,197(3),1681-1692. |
MLA | Chen, Jing-Bo."Laplace-Fourier-domain dispersion analysis of an average derivative optimal scheme for scalar-wave equation".GEOPHYSICAL JOURNAL INTERNATIONAL 197.3(2014):1681-1692. |
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