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dc.contributor.authorJeofry, Hafeez
dc.contributor.authorRoss, Neil
dc.contributor.authorLe Brocq, Anne
dc.contributor.authorGraham, Alastair G.C.
dc.contributor.authorLi, Jilu
dc.contributor.authorGogineni, Prasad
dc.contributor.authorMorlighem, Mathieu
dc.contributor.authorJordan, Thomas
dc.contributor.authorSiegert, Martin J.
dc.identifier.citationJeofry, H., Ross, N., Le Brocq, A., Graham, A., Li, J., Gogineni, P., Morlighem, M., Jordan, T., & Siegert, M. J. (2018). Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations. Nature communications, 9(1), 4576.
dc.descriptionThis work is licensed under a Creative Commons Attribution 4.0 International License.en_US
dc.description.abstractSatellite imagery reveals flowstripes on Foundation Ice Stream parallel to ice flow, and meandering features on the ice-shelf that cross-cut ice flow and are thought to be formed by water exiting a well-organised subglacial system. Here, ice-penetrating radar data show flow-parallel hard-bed landforms beneath the grounded ice, and channels incised upwards into the ice shelf beneath meandering surface channels. As the ice transitions to flotation, the ice shelf incorporates a corrugation resulting from the landforms. Radar reveals the presence of subglacial water alongside the landforms, indicating a well-organised drainage system in which water exits the ice sheet as a point source, mixes with cavity water and incises upwards into a corrugation peak, accentuating the corrugation downstream. Hard-bedded landforms influence both subglacial hydrology and ice-shelf structure and, as they are known to be widespread on formerly glaciated terrain, their influence on the ice-sheet-shelf transition could be more widespread than thought previously.en_US
dc.description.sponsorshipNASA grant # NNX10AT68Gen_US
dc.description.sponsorshipANT # NT-0424589en_US
dc.description.sponsorshipUniversity of Kansasen_US
dc.description.sponsorshipUK NERC AFI grant NE/G013071/1en_US
dc.publisherNature Researchen_US
dc.rightsCopyright © 2018, The Author(s)en_US
dc.titleHard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugationsen_US
kusw.kuauthorLi, Jilu
kusw.kudepartmentCenter for the Remote Sensing of Ice Sheetsen_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US

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