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dc.contributor.authorMathis, Jeremy T.  Concept link
dc.contributor.authorPickart, Robert S.  Concept link
dc.contributor.authorHansell, Dennis A.  Concept link
dc.contributor.authorKadko, David  Concept link
dc.contributor.authorBates, Nicholas R.  Concept link
dc.date.accessioned2010-06-16T18:53:28Z
dc.date.available2010-06-16T18:53:28Z
dc.date.issued2007-05-04
dc.identifier.citationJournal of Geophysical Research 112 (2007): C05011en_US
dc.identifier.urihttps://hdl.handle.net/1912/3659
dc.descriptionAuthor Posting. © American Geophysical Union, 2007. 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 112 (2007): C05011, doi:10.1029/2006JC003899.en_US
dc.description.abstractIn September 2004 a detailed physical and chemical survey was conducted on an anticyclonic, cold-core eddy located seaward of the Chukchi Shelf in the western Arctic Ocean. The eddy had a diameter of ∼16 km and was centered at a depth of ∼160 m between the 1000 and 1500 m isobaths over the continental slope. The water in the core of the eddy (total volume of 25 km3) was of Pacific origin, and contained elevated concentrations of nutrients, organic carbon, and suspended particles. The feature, which likely formed from the boundary current along the edge of the Chukchi Shelf, provides a mechanism for transport of carbon, oxygen, and nutrients directly into the upper halocline of the Canada Basin. Nutrient concentrations in the eddy core were elevated compared to waters of similar density in the deep Canada Basin: silicate (+20 μmol L−1), nitrate (+5 μmol L−1), and phosphate (+0.4 μmol L−1). Organic carbon in the eddy core was also elevated: POC (+3.8 μmol L−1) and DOC (+11 μmol L−1). From these observations, the eddy contained 1.25 × 109 moles Si, 4.5 × 108 moles NO3 −, 5.5 × 107 moles PO3 −, 1.2 × 108 moles POC, and 1.9 × 109 moles DOC, all available for transport to the interior of the Canada Basin. This suggests that such eddies likely play a significant role in maintaining the nutrient maxima observed in the upper halocline. Assuming that shelf-to-basin eddy transport is the dominant renewal mechanism for waters of the upper halocline, remineralization of the excess organic carbon transported into the interior would consume 6.70 × 1010 moles of O2, or one half the total oxygen consumption anticipated arising from all export processes impacting the upper halocline.en_US
dc.description.sponsorshipThis work was supported by the National Science Foundation, and office of Naval Research; DH OPP-0124900, NB OPP-0124868, DK OPP 0124872, RP N00014-02-1-0317.en_US
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.urihttps://doi.org/10.1029/2006JC003899
dc.subjectArcticen_US
dc.subjectEddyen_US
dc.subjectCarbonen_US
dc.subjectNutrientsen_US
dc.subjectShelf-basin exchangeen_US
dc.subjectChukchi Seaen_US
dc.titleEddy transport of organic carbon and nutrients from the Chukchi Shelf : impact on the upper halocline of the western Arctic Oceanen_US
dc.typeArticleen_US
dc.identifier.doi10.1029/2006JC003899


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