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dc.contributor.authorMiddleton, L
dc.contributor.authorDavis, PED
dc.contributor.authorTaylor, JR
dc.contributor.authorNicholls, KW
dc.date.accessioned2022-03-05T09:00:15Z
dc.date.available2022-03-05T09:00:15Z
dc.date.issued2022
dc.date.submitted2021-09-16
dc.identifier.issn0094-8276
dc.identifier.othergrl63806
dc.identifier.other2021gl096119
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/334693
dc.description.abstractAbstract: Warmer and more persistent intrusions of Circumpolar Deep Water (CDW) onto the West Antarctic Peninsula are a key driver of the recent increase in ice shelf mass loss. The relatively warm and salty CDW is thought to be mixed up to the base of the ice shelves via shear‐driven turbulence where it has a high capacity to melt the ice. We analyze data from a year‐long mooring beneath George VI Ice Shelf at a location where double‐diffusive layering was observed. The turbulent dissipation rates do not vary with mean flow speed, suggesting shear‐driven mixing is not the driver of basal melt at this site. Instead, we predict the observed dissipation using a new method that links along‐isopycnal stirring of temperature anomalies with double‐diffusive convection. Our work suggests that along‐isopycnal temperature variance may be a stronger indicator of melt than flow speed within strongly stratified ice shelf‐ocean boundary layers.
dc.languageen
dc.publisherAmerican Geophysical Union (AGU)
dc.subjectOceans
dc.subjectCRYOSPHERE
dc.subjectIce shelves
dc.subjectTundra
dc.subjectATMOSPHERIC PROCESSES
dc.subjectTurbulence
dc.subjectOCEANOGRAPHY: GENERAL
dc.subjectArctic and Antarctic oceanography
dc.subjectNONLINEAR GEOPHYSICS
dc.subjectOCEANOGRAPHY: PHYSICAL
dc.subjectTurbulence, diffusion, and mixing processes
dc.subjectSPACE PLASMA PHYSICS
dc.subjectGEOGRAPHIC LOCATION
dc.subjectAntarctica
dc.subjectArctic region
dc.subjectResearch Letter
dc.subjectturbulence
dc.subjectice shelf
dc.subjectboundary layer
dc.subjectdouble diffusion
dc.titleDouble Diffusion As a Driver of Turbulence in the Stratified Boundary Layer Beneath George VI Ice Shelf
dc.typeArticle
dc.date.updated2022-03-05T09:00:14Z
prism.issueIdentifier5
prism.publicationNameGeophysical Research Letters
prism.volume49
dc.identifier.doi10.17863/CAM.82111
dcterms.dateAccepted2022-02-14
rioxxterms.versionofrecord10.1029/2021GL096119
rioxxterms.versionAO
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidMiddleton, L [0000-0002-2821-6992]
dc.contributor.orcidDavis, PED [0000-0002-6471-6310]
dc.contributor.orcidTaylor, JR [0000-0002-1292-3756]
dc.contributor.orcidNicholls, KW [0000-0002-2188-4509]
dc.identifier.eissn1944-8007
pubs.funder-project-idNERC (NE/L002507/1)
pubs.funder-project-idNatural Environment Research Council (NE/N009746/1)
cam.issuedOnline2022-03-04


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