Normalized nonzero-lag crosscorrelation elastic full-waveform inversion

doi:10.1190/GEO2018-0082.1

CORC > 地质与地球物理研究所 > 中国科学院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

	Normalized nonzero-lag crosscorrelation elastic full-waveform inversion
	Zhang, Zhendong 1; Alkhalifah, Tariq 1; Wu, Zedong 1; Liu, Yike 2; He, Bin 2; Oh, Juwon 3
刊名	GEOPHYSICS
	2019
卷号	84 期号:1 页码:R1-R10
ISSN号	0016-8033
DOI	10.1190/GEO2018-0082.1
英文摘要	Full-waveform inversion (FWI) is an attractive technique due to its ability to build high-resolution velocity models. Conventional amplitude-matching FWI approaches remain challenging because the simplified computational physics used does not fully represent all wave phenomena in the earth. Because the earth is attenuating, a sample-by-sample fitting of the amplitude may not be feasible in practice. We have developed a normalized nonzero-lag crosscorrelataion-based elastic FWI algorithm to maximize the similarity of the calculated and observed data. We use the first-order elastic-wave equation to simulate the propagation of seismic waves in the earth. Our proposed objective function emphasizes the matching of the phases of the events in the calculated and observed data, and thus, it is more immune to inaccuracies in the initial model and the difference between the true and modeled physics. The normalization term can compensate the energy loss in the far offsets because of geometric spreading and avoid a bias in estimation toward extreme values in the observed data. We develop a polynomial-type weighting function and evaluate an approach to determine the optimal time lag. We use a synthetic elastic Marmousi model and the BigSky field data set to verify the effectiveness of the proposed method. To suppress the short-wavelength artifacts in the estimated S-wave velocity and noise in the field data, we apply a Laplacian regularization and a total variation constraint on the synthetic and field data examples, respectively.
资助项目	KAUST
WOS关键词	MISFIT ; MEDIA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000457601800032
资助机构	KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST ; KAUST
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/90514]
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
通讯作者	Zhang, Zhendong
作者单位	1.King Abdullah Univ Sci & Technol, Dept Phys Sci & Engn, Thuwal 239556900, Saudi Arabia 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Chonbuk Natl Univ, Dept Resources & Energy Engn, 567 Baekje Daero, Jeonju Si 54896, Jeollabuk Do, South Korea
推荐引用方式 GB/T 7714	Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,et al. Normalized nonzero-lag crosscorrelation elastic full-waveform inversion[J]. GEOPHYSICS,2019,84(1):R1-R10.
APA	Zhang, Zhendong,Alkhalifah, Tariq,Wu, Zedong,Liu, Yike,He, Bin,&Oh, Juwon.(2019).Normalized nonzero-lag crosscorrelation elastic full-waveform inversion.GEOPHYSICS,84(1),R1-R10.
MLA	Zhang, Zhendong,et al."Normalized nonzero-lag crosscorrelation elastic full-waveform inversion".GEOPHYSICS 84.1(2019):R1-R10.