Source-independent time-domain vector-acoustic full-waveform inversion

doi:10.1190/GEO2018-0304.1

CORC > 自然资源部第一海洋研究所 > 自然资源部第一海洋研究所 > 业务部门 > 海洋地质与地球物理研究室

	Source-independent time-domain vector-acoustic full-waveform inversion
	Zhong, Yu 1; Liu, Yangting 2,3,4
刊名	GEOPHYSICS
	2019-07-01
卷号	84 期号:4 页码:R489-R505
ISSN号	0016-8033
DOI	10.1190/GEO2018-0304.1
英文摘要	Dual-sensor seismic acquisition systems that record the pressure and particle velocity allow the recording of the full-vector-acoustic (VA) wavefields. Most previous studies have focused on data-domain processing methods based on VA seismic data; whereas, few studies focused on using full-VA seismic data in full-waveform inversion (FWI). Conventional acoustic FWI only takes advantage of the pressure recordings to estimate the medium's velocity model. Some artifact events will appear in the adjoint-state wavefields based on the conventional acoustic FWI method. These artifact events further reduce the accuracy of acoustic FWI. To simultaneously use pressure and vertical particle velocity recordings, we introduced a new time-domain VA FWI method. The VA FWI method can take advantage of directivity information contained in the VA seismic data. Thus, the adjoint-state wavefields based on VA FWI are more accurate than those from the conventional acoustic FWI method. In addition, we applied a convolution-based objective function to eliminate the effects of the source wavelet and implement a time-domain multiscale strategy in VA FWI. Synthetic examples are presented to demonstrate that VA FWI can improve the accuracy of acoustic FWI in the presence and absence of a free surface in the acoustic case. In addition, VA FWI does not significantly increase the computation and memory costs, but it has better convergence when compared with conventional acoustic FWI.
资助项目	Qingdao National Laboratory for Marine Science and Technology[QNLM201710]
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SOC EXPLORATION GEOPHYSICISTS
WOS记录号	WOS:000480678900023
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/30130]
专题	业务部门_海洋地质与地球物理研究室
通讯作者	Liu, Yangting
作者单位	1.China Univ Geosci Beijing, Sch Geophys & Informat Technol, Beijing 100083, Peoples R China 2.Minist Nat Resources, Inst Oceanog 1, Qingdao 266061, Shandong, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Qingdao 266237, Shandong, Peoples R China 4.China Univ Geosci, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Zhong, Yu,Liu, Yangting. Source-independent time-domain vector-acoustic full-waveform inversion[J]. GEOPHYSICS,2019,84(4):R489-R505.
APA	Zhong, Yu,&Liu, Yangting.(2019).Source-independent time-domain vector-acoustic full-waveform inversion.GEOPHYSICS,84(4),R489-R505.
MLA	Zhong, Yu,et al."Source-independent time-domain vector-acoustic full-waveform inversion".GEOPHYSICS 84.4(2019):R489-R505.