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Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations
dc.contributor.author | Jeofry, Hafeez | |
dc.contributor.author | Ross, Neil | |
dc.contributor.author | Le Brocq, Anne | |
dc.contributor.author | Graham, Alastair G.C. | |
dc.contributor.author | Li, Jilu | |
dc.contributor.author | Gogineni, Prasad | |
dc.contributor.author | Morlighem, Mathieu | |
dc.contributor.author | Jordan, Thomas | |
dc.contributor.author | Siegert, Martin J. | |
dc.date.accessioned | 2020-12-01T21:27:46Z | |
dc.date.available | 2020-12-01T21:27:46Z | |
dc.date.issued | 2018-11-01 | |
dc.identifier.citation | Jeofry, 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. https://doi.org/10.1038/s41467-018-06679-z | en_US |
dc.identifier.uri | http://hdl.handle.net/1808/30944 | |
dc.description | This work is licensed under a Creative Commons Attribution 4.0 International License. | en_US |
dc.description.abstract | Satellite 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.sponsorship | NASA grant # NNX10AT68G | en_US |
dc.description.sponsorship | ANT # NT-0424589 | en_US |
dc.description.sponsorship | University of Kansas | en_US |
dc.description.sponsorship | UK NERC AFI grant NE/G013071/1 | en_US |
dc.publisher | Nature Research | en_US |
dc.rights | Copyright © 2018, The Author(s) | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | en_US |
dc.title | Hard rock landforms generate 130 km ice shelf channels through water focusing in basal corrugations | en_US |
dc.type | Article | en_US |
kusw.kuauthor | Li, Jilu | |
kusw.kudepartment | Center for the Remote Sensing of Ice Sheets | en_US |
dc.identifier.doi | 10.1038/s41467-018-06679-z | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-8338-4905 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-2880-2908 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0001-5219-1310 | en_US |
dc.identifier.orcid | https://orcid.org/0000-0002-0090-4806 | en_US |
kusw.oaversion | Scholarly/refereed, publisher version | en_US |
kusw.oapolicy | This item meets KU Open Access policy criteria. | en_US |
dc.identifier.pmid | PMC6212400 | en_US |
dc.rights.accessrights | openAccess | en_US |