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An Envelope Travel-Time Objective Function for Reducing Source-Velocity Trade-Offs in Wave-Equation Tomography

文献类型：期刊论文

作者Pan, Wenyong1,3; Ma, Ning1,2,3; Wang, Yanfei1,2,3
刊名REMOTE SENSING
出版日期2022-10-01
卷号14期号:20页码:18
关键词envelope wave-equation travel-time tomography cross-correlation source-velocity trade-offs
DOI10.3390/rs14205223
英文摘要In conventional cross-correlation (CC)-based wave-equation travel-time tomography, wrong source wavelets can result in inaccurate velocity inversion results, which is known as the source-velocity trade-off. In this study, an envelope travel-time objective function is developed for wave-equation tomography to alleviate the non-uniqueness and uncertainty due to wrong source wavelets. The envelope of a seismic signal helps reduce the waveform fluctuations/distortions caused by variations of the source time function. We show that for two seismic signals generated with different source wavelets, the travel-time shift calculated by cross-correlation of their envelopes is more accurate compared to that obtained by directly cross-correlating their waveforms. Then, the CC-based envelope travel-time (ET) objective function is introduced for wave-equation tomography. A new adjoint source has also been derived to calculate the sensitivity kernels. In the numerical inversion experiments, a synthetic example with cross-well survey is first given to show that compared to the traditional CC travel-time objective function, the ET objective function is relatively insensitive to source wavelet variations and can reconstruct the elastic velocity structures more reliably. Finally, the effectiveness and advantages of our method are verified by inversion of early arrivals in a practical seismic survey for recovering near-surface velocity structures.
WOS关键词FORM INVERSION ; GAUSS-NEWTON ; ADJOINT TOMOGRAPHY ; MISFIT FUNCTIONS
资助项目National Natural Science Foundation of China[42004116] ; National Natural Science Foundation of China[12171455] ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS)[ZDBS-LY-DQC003] ; IGGCAS Research Start-up Funds[2020000061]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
语种英语
WOS记录号WOS:000873428500001
出版者MDPI
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; Original Innovation Research Program of the Chinese Academy of Sciences (CAS) ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds ; IGGCAS Research Start-up Funds
源URL[http://ir.iggcas.ac.cn/handle/132A11/107751]  
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Pan, Wenyong
作者单位1.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Pan, Wenyong,Ma, Ning,Wang, Yanfei. An Envelope Travel-Time Objective Function for Reducing Source-Velocity Trade-Offs in Wave-Equation Tomography[J]. REMOTE SENSING,2022,14(20):18.
APA Pan, Wenyong,Ma, Ning,&Wang, Yanfei.(2022).An Envelope Travel-Time Objective Function for Reducing Source-Velocity Trade-Offs in Wave-Equation Tomography.REMOTE SENSING,14(20),18.
MLA Pan, Wenyong,et al."An Envelope Travel-Time Objective Function for Reducing Source-Velocity Trade-Offs in Wave-Equation Tomography".REMOTE SENSING 14.20(2022):18.

入库方式： OAI收割

来源：地质与地球物理研究所

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