Joint inversion of full-waveform GPR and ER data enhanced by the envelope transform and cross-gradients

PreviousNext No Access18th International Conference on Ground Penetrating Radar, Golden, Colorado, 14–19 June 2020Joint inversion of full-waveform GPR and ER data enhanced by the envelope transform and cross-gradientsAuthors: Diego DomenzainJohn BradfordJodi MeadDiego DomenzainColorado School of Mines, United StatesSearch for more papers by this author, John BradfordColorado School of Mines, United StatesSearch for more papers by this author, and Jodi MeadBoise State University, United StatesSearch for more papers by this authorhttps://doi.org/10.1190/gpr2020-087.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Full-waveform inversion (FWI) of surface acquired GPR data can be prone to non-uniqueness and poor resolution of the recovered parameters when low frequency information is missing in the data. We present a novel non-linear joint inversion of GPR and electrical resistivity (ER) data that enhances long wavelength and accuracy in the recovered electrical permit-tivity and conductivity of the subsurface. We do so by (i) exploiting the inherent link of GPR and ER data to conductivity given by Maxwell’s equations, (ii) using the envelope of the GPR data in the FWI scheme, and (iii) iteratively implementing the cross-gradients constraint directly in the inversion. Our scheme improves the accuracy, frequency content, and depth resolution of the permittivity and conductivity solutions compared to individual GPR and ER inversions. Keywords: inversion, conductivity, resistivity, resolution, algorithmPermalink: https://doi.org/10.1190/gpr2020-087.1FiguresReferencesRelatedDetails 18th International Conference on Ground Penetrating Radar, Golden, Colorado, 14–19 June 2020ISSN (online):2159-6832Copyright: 2020 Pages: 455 publication data© 2020 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 11 Nov 2020 CITATION INFORMATION Diego Domenzain, John Bradford, and Jodi Mead, (2020), "Joint inversion of full-waveform GPR and ER data enhanced by the envelope transform and cross-gradients," SEG Global Meeting Abstracts : 332-335. https://doi.org/10.1190/gpr2020-087.1 Plain-Language Summary KeywordsinversionconductivityresistivityresolutionalgorithmPDF DownloadLoading ...