Multiphysics joint inversion of field FWI-GPR and ER surface acquired data

PreviousNext No AccessFirst International Meeting for Applied Geoscience & Energy Expanded AbstractsMultiphysics joint inversion of field FWI-GPR and ER surface acquired dataAuthors: Diego DomenzainJohn BradfordJodi MeadDiego DomenzainColorado School of MinesSearch for more papers by this author, John BradfordColorado School of MinesSearch for more papers by this author, and Jodi MeadBoise State UniversitySearch for more papers by this authorhttps://doi.org/10.1190/segam2021-3576479.1 SectionsSupplemental MaterialAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail AbstractWe use ground penetrating radar (GPR) and electrical resistivity (ER) surface acquired data on an alluvial aquifer in a multi-physics joint inversion that recovers electrical permittivity and conductivity. Our algorithm is a simultaneous 2.5D joint inversion that coherently integrates the ER data and the full-waveform response of GPR without invoking petrophysical relationships. We join full-waveform inversion (FWI) GPR with adjoint derived ER sensitivities, without the need to interpolate the GPR and ER computational domains. We compare our recovered parameters to individual FWI-GPR and ER recovered parameters. We use capacitive conductivity and neutron-derived porosity borehole measurements to validate our results. Our joint recovered conductivity resembles both control data better than the control data resembles each other, and better than individual FWI-GPR and ER results. Our joint recovered permittivity exhibits subsurface features with higher resolution than that of the FWI-GPR solution.Keywords: multiphysics, full-waveform inversion, ground-penetrating radar (GPR), electrical/resistivity, aquiferPermalink: https://doi.org/10.1190/segam2021-3576479.1FiguresReferencesRelatedDetails First International Meeting for Applied Geoscience & Energy Expanded AbstractsISSN (print):1052-3812 ISSN (online):1949-4645Copyright: 2021 Pages: 3561 publication data© 2021 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished: 01 Sep 2021 CITATION INFORMATION Diego Domenzain, John Bradford, and Jodi Mead, (2021), "Multiphysics joint inversion of field FWI-GPR and ER surface acquired data," SEG Technical Program Expanded Abstracts : 1716-1720. https://doi.org/10.1190/segam2021-3576479.1 Plain-Language Summary Keywordsmultiphysicsfull-waveform inversionground-penetrating radar (GPR)electrical/resistivityaquiferPDF DownloadLoading ...