RIMFAX dip attribute analysis: Unconformity detection and true dip in the Martian subsurface

Abstract

PreviousNext No Access19th International Conference on Ground Penetrating RadarRIMFAX dip attribute analysis: Unconformity detection and true dip in the Martian subsurfaceAuthors: Sigurd EideHenning DypvikHans AmundsenDavid PageSvein-Erik HamranSigurd EideUniversity of OsloSearch for more papers by this author, Henning DypvikUniversity of OsloSearch for more papers by this author, Hans AmundsenGeophysical ASSearch for more papers by this author, David PageUniversity of California Los AngelesSearch for more papers by this author, and Svein-Erik HamranUniversity of OsloSearch for more papers by this authorhttps://doi.org/10.1190/gpr2022-018.1 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract By conducting a dip attribute analysis, the inclination of a set of reflections in a radargram can be quantified. The results are highly sensitive to the implementation, however, as many parameters need to be configured according to the dataset and aim of the analysis. Furthermore, the highly varying nature of geological stratification makes it nontrivial to assign a single quantitative estimate to describe a large set of reflections. In this study, we investigate how the dip attribute analysis is used in ground-penetrating radar studies of Martian subsurface layering. By analyzing radargrams from the RIMFAX instrument on the Perseverance rover, we detect a possible unconformity separating distinct layer orientations. A novel approach then quantifies true dip of subsurface strata through a stereographic fit of apparent dip estimates along tens of meter rover path. RIMFAX radargrams together with true dip estimates show the potential for giving a new and unprecedented view of the extent and nature of stratification in Jezero Crater. Keywords: algorithm, diffraction, reflection, GPR, modelingPermalink: https://doi.org/10.1190/gpr2022-018.1FiguresReferencesRelatedDetails 19th International Conference on Ground Penetrating RadarISSN (online):2159-6832Copyright: 2022 Pages: 166 publication data© 2022 Published in electronic format with permission by the Society of Exploration GeophysicistsPublisher:Society of Exploration Geophysicists HistoryPublished Online: 13 Oct 2022 CITATION INFORMATION Sigurd Eide, Henning Dypvik, Hans Amundsen, David Page, and Svein-Erik Hamran, (2022), "RIMFAX dip attribute analysis: Unconformity detection and true dip in the Martian subsurface," SEG Global Meeting Abstracts : 159-162. https://doi.org/10.1190/gpr2022-018.1 Plain-Language Summary KeywordsalgorithmdiffractionreflectionGPRmodelingPDF DownloadLoading ...