3D Inversion of magnetic total gradient data in the presence of remanent magnetization

Abstract

PreviousNext No AccessSEG Technical Program Expanded Abstracts 20043D Inversion of magnetic total gradient data in the presence of remanent magnetizationAuthors: Sarah ShearerYaoguo LiSarah ShearerGravity and Magnetics Research Consortium, Department of Geophysics, Colorado School of MinesSearch for more papers by this author and Yaoguo LiGravity and Magnetics Research Consortium, Department of Geophysics, Colorado School of MinesSearch for more papers by this authorhttps://doi.org/10.1190/1.1851318 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Inversion of magnetic data has long been hampered by the need to specify the direction of magnetization. We present a general approach that utilizes the minimal dependence on magnetization direction of amplitude and total gradient data and thereby overcome the difficulty associated with inversion when unknown remanent magnetization is present. To construct the inversion algorithm for the magnitude of magnetization, we solve a nonlinear minimization problem formulated using Tikhonov regularization. A positivity constraint is also incorporated to improve the solution. The algorithm will be illustrated with both synthetic and field data sets.Permalink: https://doi.org/10.1190/1.1851318FiguresReferencesRelatedDetailsCited ByRemoving residual airborne sensor motion for measuring seismic signals from a droneJournal of Unmanned Vehicle Systems, Vol. 9, No. 33D Inversion of Magnetic Amplitude Data with Sparseness Constraint10 May 2021 | Pure and Applied Geophysics, Vol. 178, No. 6A paradigm shift in magnetic data interpretation: Increased value through magnetization inversionsYaoguo Li, Jiajia Sun, Shu-Ling Li, and Marcelo Leão-Santos2 February 2021 | The Leading Edge, Vol. 40, No. 2Inversion and magnetization homogeneity testing for 2D magnetic sourcesWilliam Pareschi Soares and Carlos Alberto Mendonça7 January 2021 | GEOPHYSICS, Vol. 86, No. 1Magnetic amplitude inversion for depth-to-basement and apparent magnetization-intensity estimatesMarlon C. Hidalgo-Gato, Valéria C. F. Barbosa, and Vanderlei C. 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Oldenburg, and Nigel Phillips6 October 2006The historical development of the magnetic method in explorationGEOPHYSICS, Vol. 70, No. 6 SEG Technical Program Expanded Abstracts 2004ISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2004 Pages: 2586 publication data© 2004 Copyright © 2004 Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 03 Jan 2005 CITATION INFORMATION Sarah Shearer and Yaoguo Li, (2004), "3D Inversion of magnetic total gradient data in the presence of remanent magnetization," SEG Technical Program Expanded Abstracts : 774-777. https://doi.org/10.1190/1.1851318 Plain-Language Summary PDF DownloadLoading ...