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dc.contributor.authorWilson, Nathaniel J.  Concept link
dc.contributor.authorStraneo, Fiamma  Concept link
dc.date.accessioned2015-11-23T19:16:17Z
dc.date.available2016-03-22T07:21:55Z
dc.date.issued2015-09-22
dc.identifier.citationGeophysical Research Letters 42 (2015): 7648–7654en_US
dc.identifier.urihttps://hdl.handle.net/1912/7641
dc.descriptionAuthor Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 42 (2015): 7648–7654, doi:10.1002/2015GL064944.en_US
dc.description.abstractThe mass loss at Nioghalvfjerdsbræ is primarily due to rapid submarine melting. Ocean data obtained from beneath the Nioghalvfjerdsbræ ice tongue show that melting is driven by the presence of warm (1°C) Atlantic Intermediate Water (AIW). A sill prevents AIW from entering the cavity from Dijmphna Sund, requiring that it flow into the cavity via bathymetric channels to the south at a pinned ice front. Comparison of water properties from the cavity, Dijmphna Sund, and the continental shelf support this conclusion. Overturning circulation rates inferred from observed melt rates and cavity stratification suggest an exchange flow between the cavity and the continental shelf of 38mSv, sufficient to flush cavity waters in under 1 year. These results place upper bounds on the timescales of external variability that can be transmitted to the glacier via the ice tongue cavity.en_US
dc.description.sponsorshipNASA Grant Number: NNX13AK88G, NSF Grant Number: OCE-1434041en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherJohn Wiley & Sonsen_US
dc.relation.urihttps://doi.org/10.1002/2015GL064944
dc.subject79Northen_US
dc.subjectIce tongueen_US
dc.subjectNEGISen_US
dc.subjectNioghalvfjerdsfjordenen_US
dc.subjectCirculationen_US
dc.subjectIce-oceanen_US
dc.titleWater exchange between the continental shelf and the cavity beneath Nioghalvfjerdsbræ (79 North Glacier)en_US
dc.typeArticleen_US
dc.description.embargo2016-03-22en_US
dc.identifier.doi10.1002/2015GL064944


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