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dc.contributor.authorWåhlin, A.K.
dc.contributor.authorGraham, A.
dc.contributor.authorHogan, K.A.
dc.contributor.authorQueste, B.Y.
dc.contributor.authorBoehme, Lars
dc.contributor.authorLarter, R.
dc.contributor.authorPettit, E.
dc.contributor.authorWellner, J.
dc.contributor.authorHeywood, K.J.
dc.date.accessioned2021-04-13T15:30:02Z
dc.date.available2021-04-13T15:30:02Z
dc.date.issued2021-04-09
dc.identifier.citationWåhlin , A K , Graham , A , Hogan , K A , Queste , B Y , Boehme , L , Larter , R , Pettit , E , Wellner , J & Heywood , K J 2021 , ' Pathways and modification of warm water flowing beneath Thwaites Ice Shelf, West Antarctica ' , Science Advances , vol. 7 , no. 15 , eabd7254 . https://doi.org/10.1126/sciadv.abd7254en
dc.identifier.issn2375-2548
dc.identifier.otherPURE: 272790986
dc.identifier.otherPURE UUID: 3faabe8e-f916-4a7f-9970-db244438ad43
dc.identifier.otherPubMed: 33837074
dc.identifier.otherWOS: 000642446300004
dc.identifier.otherScopus: 85104209661
dc.identifier.urihttp://hdl.handle.net/10023/23018
dc.descriptionFunding for this study has been received from the Natural Environment Research Council (grant numbers NE/S006419/1 and NE/S006664/1) and NSF, Office of Polar Programs (grant numbers 1929991 and 1738942) as part of the ITGC, from Vetenskapsrådet (2017-04257) and from the SSF project SMARC.en
dc.description.abstractThwaites Glacier is the most rapidly changing outlet of the West Antarctic Ice Sheet and adds large uncertainty to 21st century sea-level rise predictions. Here, we present the first direct observations of ocean temperature, salinity, and oxygen beneath Thwaites Ice Shelf front, collected by an autonomous underwater vehicle. On the basis of these data, pathways and modification of water flowing into the cavity are identified. Deep water underneath the central ice shelf derives from a previously underestimated eastern branch of warm water entering the cavity from Pine Island Bay. Inflow of warm and outflow of melt-enriched waters are identified in two seafloor troughs to the north. Spatial property gradients highlight a previously unknown convergence zone in one trough, where different water masses meet and mix. Our observations show warm water impinging from all sides on pinning points critical to ice-shelf stability, a scenario that may lead to unpinning and retreat.
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofScience Advancesen
dc.rightsCopyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license, which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.en
dc.subjectGC Oceanographyen
dc.subject3rd-NDASen
dc.subject.lccGCen
dc.titlePathways and modification of warm water flowing beneath Thwaites Ice Shelf, West Antarcticaen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.contributor.institutionUniversity of St Andrews.Sea Mammal Research Uniten
dc.contributor.institutionUniversity of St Andrews.Scottish Oceans Instituteen
dc.contributor.institutionUniversity of St Andrews.Marine Alliance for Science & Technology Scotlanden
dc.identifier.doihttps://doi.org/10.1126/sciadv.abd7254
dc.description.statusPeer revieweden


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