Airborne radar sounding evidence for deformable sediments and outcropping bedrock beneath Thwaites Glacier, West Antarctica

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dc.citation.firstpage7200en_US
dc.citation.issueNumber20en_US
dc.citation.journalTitleGeophysical Research Lettersen_US
dc.citation.lastpage7208en_US
dc.citation.volumeNumber41en_US
dc.contributor.authorSchroeder, Dustin M.en_US
dc.contributor.authorBlankenship, Donald D.en_US
dc.contributor.authorYoung, Duncan A.en_US
dc.contributor.authorWitus, Alexandra E.en_US
dc.contributor.authorAnderson, John B.en_US
dc.date.accessioned2017-06-05T20:44:20Zen_US
dc.date.available2017-06-05T20:44:20Zen_US
dc.date.issued2014en_US
dc.description.abstractThe geologic and morphologic records of prior ice sheet configurations show evidence of rapid, back-stepping, meltwater intensive retreats. However, the potential for such a retreat in a contemporary glacier depends on the lithology of the current ice sheet bed, which lies beneath kilometers of ice, making its physical properties difficult to constrain. We use radar sounding and marine bathymetry data to compare the bed configuration of Thwaites Glacier to the bed of paleo-Pine Island Glacier. Using observed and modeled radar scattering, we show that the tributaries and upper trunk of Thwaites Glacier are underlain by ice flow-aligned bedforms consistent with deformable sediment and that the lower trunk is grounded on a region of high bed roughness consistent with outcropping bedrock. This is the same configuration as paleo-Pine Island Glacier during its retreat across the inner continental shelf.en_US
dc.identifier.citationSchroeder, Dustin M., Blankenship, Donald D., Young, Duncan A., et al.. "Airborne radar sounding evidence for deformable sediments and outcropping bedrock beneath Thwaites Glacier, West Antarctica." <i>Geophysical Research Letters,</i> 41, no. 20 (2014) Wiley: 7200-7208. https://doi.org/10.1002/2014GL061645.en_US
dc.identifier.doihttps://doi.org/10.1002/2014GL061645en_US
dc.identifier.urihttps://hdl.handle.net/1911/94804en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.titleAirborne radar sounding evidence for deformable sediments and outcropping bedrock beneath Thwaites Glacier, West Antarcticaen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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