A numerical experiment on full waveform inversion of seismic velocity structure under a rugged seafloor by using joint OBN and VSP data

PreviousNext No AccessSEG 2017 Workshop: OBN/OBC Technologies and Applications, Beijing, China, 4-6 September 2017A numerical experiment on full waveform inversion of seismic velocity structure under a rugged seafloor by using joint OBN and VSP dataAuthors: Jianlong Yuan*Jiashun YuJianlong Yuan*Chengdu University of Technology, College of Geophysics, Chengdu, Sichuan 610059, ChinaSearch for more papers by this author and Jiashun YuChengdu University of Technology, College of Geophysics, Chengdu, Sichuan 610059, ChinaSearch for more papers by this authorhttps://doi.org/10.1190/obnobc2017-11 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract A numerical experiment on full waveform inversion of seismic velocity structure is carried out using ocean-bottom node (OBN) and vertical seismic profile (VSP) seismic data. We added an undulating seafloor to the Marmousi2 model. Then seismic forward modeling in frequency domain was performed on the model to synthesize seismic P-wave data for the experiments. The initial velocity model for inversion was obtained by applying Gaussian smoothing on the model. Then the VSP, OBN and VSP+OBN data were used, separately, to inverse the velocity structure. The results show that the inversion strategy of using VSP+OBN data resulted in a velocity structure with higher precision than either using VSP or OBN data. It suggests that the VSP+OBN inversion strategy is a better solution for the rugged seabed situation. Keywords: ocean-bottom node, OBC, numerical, full-waveform inversion, VSPPermalink: https://doi.org/10.1190/obnobc2017-11FiguresReferencesRelatedDetails SEG 2017 Workshop: OBN/OBC Technologies and Applications, Beijing, China, 4-6 September 2017ISSN (online):2159-6832Copyright: 2017 Pages: 94 publication data© 2017 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 16 Oct 2017 CITATION INFORMATION Jianlong Yuan* and Jiashun Yu, (2017), "A numerical experiment on full waveform inversion of seismic velocity structure under a rugged seafloor by using joint OBN and VSP data," SEG Global Meeting Abstracts : 39-42. https://doi.org/10.1190/obnobc2017-11 Plain-Language Summary Keywordsocean-bottom nodeOBCnumericalfull-waveform inversionVSPPDF DownloadLoading ...