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• W2771302859 abstract "PreviousNext No AccessSEG Technical Program Expanded Abstracts 2017A multiple level set method for three-dimensional inversion of magnetic dataAuthors: Wenbin LiWangtao LuJianliang QianYaoguo LiWenbin LiMichigan State UniversitySearch for more papers by this author, Wangtao LuMichigan State UniversitySearch for more papers by this author, Jianliang QianMichigan State UniversitySearch for more papers by this author, and Yaoguo LiColorado School of MinesSearch for more papers by this authorhttps://doi.org/10.1190/segam2017-17729331.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract We present a multiple level-set method for inverting magnetic data produced by weak induced magnetization only. The method is designed to deal with a specific class of 3-D magnetic inverse problems in which the magnetic susceptibility is known and the objective of the inversion is to find the boundary or geometrical shape of the causative bodies. We adopt the conceptual representation of the subsurface geological structure by a set of magnetic bodies each having a uniform magnetic susceptibility embedded in a non-magnetic background. This representation enables us to reformulate the magnetic inverse problem into a domain inverse problem for those unknown domains defining the supports of those magnetic causative bodies. Since each body may take on a variety of shapes, and we may not know the number of bodies a priori either, we use multiple level-set functions to parameterize these domains so that the domain inverse problem can be further reduced to an optimization problem of multiple level-set functions. We apply the new method to both synthetic and field data sets and demonstrate its effectiveness. Presentation Date: Tuesday, September 26, 2017 Start Time: 9:45 AM Location: 360C Presentation Type: ORAL Keywords: inversion, magnetics, gravityPermalink: https://doi.org/10.1190/segam2017-17729331.1FiguresReferencesRelatedDetailsCited byShape-constrained geophysical inversionHuseyin Denli and Jeremy S. Brandman23 September 2022 | GEOPHYSICS, Vol. 87, No. 6Simultaneously recovering both domain and varying density in inverse gravimetry by efficient level-set methodsInverse Problems & Imaging, Vol. 15, No. 3 SEG Technical Program Expanded Abstracts 2017ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2017 Pages: 6093 publication data© 2017 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 17 Aug 2017 CITATION INFORMATION Wenbin Li, Wangtao Lu, Jianliang Qian, and Yaoguo Li, (2017), A multiple level set method for three-dimensional inversion of magnetic data, SEG Technical Program Expanded Abstracts : 1723-1728. https://doi.org/10.1190/segam2017-17729331.1 Plain-Language Summary KeywordsinversionmagneticsgravityPDF DownloadLoading ..." @default.
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• W2771302859 title "A multiple level set method for three-dimensional inversion of magnetic data" @default.
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