A 2.5D generalized first-order wave equation to accommodate various elastic media and different boundary conditions

PreviousNext No AccessSEG Technical Program Expanded Abstracts 2019A 2.5D generalized first-order wave equation to accommodate various elastic media and different boundary conditionsAuthors: Shangbei YangBing ZhouChaoying BaiShangbei YangDepartment of Earth Sciences, Khalifa University of Science and Technology, Abu Dhabi, UAEDepartment of Geophysics, School of Geology Engineering and Geomatics, Chang’an University, Xi’an, ChinaSearch for more papers by this author, Bing ZhouDepartment of Earth Sciences, Khalifa University of Science and Technology, Abu Dhabi, UAESearch for more papers by this author, and Chaoying BaiDepartment of Geophysics, School of Geology Engineering and Geomatics, Chang’an University, Xi’an, ChinaSearch for more papers by this authorhttps://doi.org/10.1190/segam2019-3215323.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractWe present a 2.5D generalized first-order time-domain governing equation to model seismic waves propagation in acoustic, elastic isotropic and anisotropic media, as well as at the air-water, air-solid and water-solid interfaces with a single computer program. In order to verify the proposed wave equation, we numerically solve it by a curvilinear finite-difference method, which exactly matches free-surface topography and undulating subsurface interfaces. The comparison between the numerical wave solutions and the theoretical wave-fronts in various media (acoustic, isotropic and anisotropic media) shows good agreements, and the results of seismic wave propagation at different boundaries (air-water, air-solid and undulating water-solid interfaces) demonstrate clear reflection, conversion and transmission waveforms, which confirm the correctness of the proposed wave equation.Presentation Date: Monday, September 16, 2019Session Start Time: 1:50 PMPresentation Start Time: 3:05 PMLocation: 304APresentation Type: OralKeywords: wave propagation, acoustic, elastic, boundary conditions, finite differencePermalink: https://doi.org/10.1190/segam2019-3215323.1FiguresReferencesRelatedDetails SEG Technical Program Expanded Abstracts 2019ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2019 Pages: 5407 publication data© 2019 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 10 Aug 2019 CITATION INFORMATION Shangbei Yang, Bing Zhou, and Chaoying Bai, (2019), "A 2.5D generalized first-order wave equation to accommodate various elastic media and different boundary conditions," SEG Technical Program Expanded Abstracts : 3775-3779. https://doi.org/10.1190/segam2019-3215323.1 Plain-Language Summary Keywordswave propagationacousticelasticboundary conditionsfinite differencePDF DownloadLoading ...