Using S wave receiver functions to estimate crustal structure beneath ice sheets: An application to the Transantarctic Mountains and East Antarctic craton

dc.contributor.authorHansen, Samantha E.
dc.contributor.authorJulia, Jordi
dc.contributor.authorNyblade, Andrew A.
dc.contributor.authorPyle, Moira L.
dc.contributor.authorWiens, Douglas A.
dc.contributor.authorAnandakrishnan, Sridhar
dc.contributor.otherPennsylvania Commonwealth System of Higher Education (PCSHE)
dc.contributor.otherPennsylvania State University
dc.contributor.otherPennsylvania State University - University Park
dc.contributor.otherWashington University (WUSTL)
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.coverage.spatialAntarctica
dc.date.accessioned2018-10-19T18:33:03Z
dc.date.available2018-10-19T18:33:03Z
dc.date.issued2009
dc.description.abstractFor seismic stations deployed on ice sheets, determining crustal structure using P wave receiver functions can be difficult since ice reverberations may mask P-to-S (Ps) conversions from the crust-mantle boundary (Moho). In this study, we assess the usefulness of S wave receiver functions (SRFs), which are not affected by ice multiples, for investigating crustal structure beneath ice sheets by analyzing broadband seismic data recorded across the Transantarctic Mountains (TAMs) and the East Antarctic (EA) craton. Clear S-to-P (Sp) conversions from the Moho are obtained using standard SRF processing methods and are easier to interpret than the corresponding Ps conversion on PRFs. When the Sp-S times are modeled together with 16-20 s Rayleigh wave group velocities, we obtain Moho depth estimates of similar to 40-45 km for the EA craton, consistent with average Precambrian crustal thickness found globally but similar to 9 km thicker than previously reported estimates. A somewhat thinner crust (similar to 35-40 km) is obtained beneath the TAMs, suggesting that crustal buoyancy is at most a minor contributor to the uplift of the mountain range in this region.en_US
dc.format.mimetypeapplication/pdf
dc.identifier.citationHansen, S., et al. (2009): Using S Wave Receiver Functions to Estimate Crustal Structure Beneath Ice Sheets: An Application to the Transantarctic Mountains and East Antarctic Craton. Geochemistry, Geophysics, Geosystems, 10(8). DOI: https://doi.org/10.1029/2009GC002576
dc.identifier.doi10.1029/2009GC002576
dc.identifier.orcidhttps://orcid.org/0000-0002-5169-4386
dc.identifier.orcidhttps://orcid.org/0000-0003-1081-0966
dc.identifier.orcidhttps://orcid.org/0000-0002-9232-0938
dc.identifier.orcidhttps://orcid.org/0000-0001-7608-5715
dc.identifier.urihttp://ir.ua.edu/handle/123456789/4062
dc.languageEnglish
dc.language.isoen_US
dc.publisherAmerican Geophysical Union
dc.subjectS wave receiver functions
dc.subjectice sheets
dc.subjectAntarctica
dc.subjectTransantarctic Mountains
dc.subjectWESTERN-AUSTRALIA
dc.subjectYILGARN CRATON
dc.subjectLITHOSPHERE
dc.subjectUPLIFT
dc.subjectKAAPVAAL
dc.subjectMODEL
dc.subjectZONE
dc.subjectSEA
dc.subjectGeochemistry & Geophysics
dc.titleUsing S wave receiver functions to estimate crustal structure beneath ice sheets: An application to the Transantarctic Mountains and East Antarctic cratonen_US
dc.typetext
dc.typeArticle
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