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dc.contributor.authorTuckett, Peter A.
dc.contributor.authorEly, Jeremy C.
dc.contributor.authorSole, Andrew J.
dc.contributor.authorLivingstone, Stephen J.
dc.contributor.authorDavison, Benjamin J.
dc.contributor.authorMelchior van Wessem, J.
dc.contributor.authorHoward, Joshua
dc.date.accessioned2019-09-23T15:30:01Z
dc.date.available2019-09-23T15:30:01Z
dc.date.issued2019-09-20
dc.identifier.citationTuckett , P A , Ely , J C , Sole , A J , Livingstone , S J , Davison , B J , Melchior van Wessem , J & Howard , J 2019 , ' Rapid accelerations of Antarctic Peninsula outlet glaciers driven by surface melt ' , Nature Communications , vol. 10 , 4311 . https://doi.org/10.1038/s41467-019-12039-2en
dc.identifier.issn2041-1723
dc.identifier.otherPURE: 261316884
dc.identifier.otherPURE UUID: 96790dc3-8f41-4852-8d86-46c85c84d001
dc.identifier.otherRIS: urn:263ECF478A4067A8372E17F7E43C666C
dc.identifier.otherRIS: Tuckett2019
dc.identifier.otherScopus: 85072510412
dc.identifier.otherORCID: /0000-0001-9483-2956/work/62311860
dc.identifier.otherWOS: 000486995200021
dc.identifier.urihttp://hdl.handle.net/10023/18541
dc.descriptionJ.C.E. acknowledges a NERC independent research fellowship grant number NE/R014574/1. J.M.W. acknowledges financial contributions made by the Netherlands Organization for Scientific Research (grant 866.15.201) and the Netherlands Earth System Science Center (NESSC).en
dc.description.abstractAtmospheric warming is increasing surface melting across the Antarctic Peninsula, with unknown impacts upon glacier dynamics at the ice-bed interface. Using high-resolution satellite-derived ice velocity data, optical satellite imagery and regional climate modelling, we show that drainage of surface meltwater to the bed of outlet glaciers on the Antarctic Peninsula occurs and triggers rapid ice flow accelerations (up to 100% greater than the annual mean). This provides a mechanism for this sector of the Antarctic Ice Sheet to respond rapidly to atmospheric warming. We infer that delivery of water to the bed transiently increases basal water pressure, enhancing basal motion, but efficient evacuation subsequently reduces water pressure causing ice deceleration. Currently, melt events are sporadic, so efficient subglacial drainage cannot be maintained, resulting in multiple short-lived (<6 day) ice flow perturbations. Future increases in meltwater could induce a shift to a glacier dynamic regime characterised by seasonal-scale hydrologically-driven ice flow variations.
dc.format.extent8
dc.language.isoeng
dc.relation.ispartofNature Communicationsen
dc.rightsCopyright © The Author(s) 2019. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.en
dc.subjectG Geography (General)en
dc.subjectDASen
dc.subject.lccG1en
dc.titleRapid accelerations of Antarctic Peninsula outlet glaciers driven by surface melten
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Bell-Edwards Geographic Data Instituteen
dc.contributor.institutionUniversity of St Andrews.School of Geography & Sustainable Developmenten
dc.identifier.doihttps://doi.org/10.1038/s41467-019-12039-2
dc.description.statusPeer revieweden


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