Show simple item record

dc.contributor.authorKadko, David
dc.contributor.authorPickart, Robert S.
dc.contributor.authorMathis, Jeremy T.
dc.date.accessioned2010-06-08T19:47:10Z
dc.date.available2010-06-08T19:47:10Z
dc.date.issued2008-02-22
dc.identifier.citationJournal of Geophysical Research 113 (2008): C02018en_US
dc.identifier.urihttp://hdl.handle.net/1912/3613
dc.descriptionAuthor Posting. © American Geophysical Union, 2008. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 113 (2008): C02018, doi:10.1029/2007JC004429.en_US
dc.description.abstractRadioisotope evaluation of a cold-core, anticyclonic eddy surveyed in September 2004 on the Chukchi Sea continental slope was used to determine its age since formation over the shelf environment. Because the eddy can be shown to have been generated near the shelf break, initial conditions for several age-dependent tracers could be relatively well constrained. A combination of 228Ra/226Ra, excess 224Ra, and 228Th/228Ra suggested an age on the order of months. This age is consistent with the presence of elevated concentrations of nutrients, organic carbon, suspended particles, and shelf-derived neritic zooplankton within the eddy compared to ambient offshore water in the Canada Basin but comparable to values measured in the Chukchi shelf and shelf-break environment. Hence this feature, at the edge of the deep basin, was poised to deliver biogeochemically significant shelf material to the central Arctic Ocean.en_US
dc.description.sponsorshipThis work was supported by National Science Foundation Polar Programs grants OPP-662690 and OPP-66040N to the University of Miami (DK), and Office of Naval Research grant N00014-02-1-0317 (RP).en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2007JC004429
dc.subjectArcticen_US
dc.subjectEddyen_US
dc.subjectRadiumen_US
dc.titleAge characteristics of a shelf-break eddy in the western Arctic and implications for shelf-basin exchangeen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2007JC004429


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record