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Pacific ventilation of the Artic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin

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dc.creator Woodgate, Rebecca A.
dc.creator Aagaard, Knut
dc.creator Swift, James H.
dc.creator Falkner, Kelly
dc.creator Smethie, William M.
dc.date.accessioned 2010-03-03T22:03:14Z
dc.date.available 2010-03-03T22:03:14Z
dc.date.issued 2005-09-29
dc.identifier.citation Woodgate, R. A., Aagaard, K., Swift, J. H., Falkner, K., and Smethie, W. M., Jr., 2005, Pacific ventilation of the Arctic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin: Geophys. Res. Lett., v. 32(18). en
dc.identifier.uri http://hdl.handle.net/1957/14779
dc.description copyrighted by American Geophysical Union en
dc.description.abstract Pacific winter waters, a major source of nutrients and buoyancy to the Arctic Ocean, are thought to ventilate the Arctic's lower halocline either by injection (isopycnal or penetrative) of cold saline shelf waters, or by cooling and freshening Atlantic waters upwelled onto the shelf. Although ventilation at salinity (S) > 34 psu has previously been attributed to hypersaline polynya waters, temperature, salinity, nutrient and tracer data suggest instead that much of the western Arctic's lower halocline is in fact influenced by a diapycnal mixing of Pacific winter waters (with S ~ 33.1 psu) and denser eastern Arctic halocline (Atlantic) waters, the mixing taking place possibly over the northern Chukchi shelf/slope. Estimates from observational data confirm that sufficient quantities of Atlantic water may be upwelled to mix with the inflowing Pacific waters, with volumes implying the halocline over the Chukchi Borderland region may be renewed on timescales of order a year. en
dc.language.iso en_US en
dc.publisher American Geophysical Union en
dc.relation.ispartofseries Geophysical Research Letters en
dc.relation.ispartofseries Vol. 32 (2005) en
dc.subject Arctic Ocean en
dc.subject diapycnal mixing en
dc.subject Pacific ventilation en
dc.title Pacific ventilation of the Artic Ocean's lower halocline by upwelling and diapycnal mixing over the continental margin en
dc.type Article en
dc.identifier.doi 10.1029/2005GL023999


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