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dc.contributor.authorShaw, William J.
dc.contributor.authorStanton, Timothy P.
dc.date.accessioned2015-08-20T23:07:45Z
dc.date.available2015-08-20T23:07:45Z
dc.date.issued2014
dc.identifier.citationShaw, W. J., and T. P. Stanton (2014), Vertical diffusivity of the Western Arctic Ocean halocline, J. Geophys. Res. Oceans, 119, 5017–5038, doi:10.1002/ 2013JC009598.en_US
dc.identifier.urihttp://hdl.handle.net/10945/46143
dc.descriptionThe article of record as published may be located at http://dx.doi.org/10.1002/2013JC009598en_US
dc.description.abstractA nearly year-long series of upper ocean temperature, conductivity, and temperature microstructure profiles were collected from an ice camp drifting in the Beaufort Gyre as part of the 1997–1998 Surface Heat Budget of the Arctic Experiment (SHEBA). Geographically, the record includes portions over the deep Canada Basin and the steep bathymetry of the Chukchi Borderlands region. Hydrographically, the record includes ‘‘cool,’’ Pacific-origin haloclines, which contain a variety of subsurface temperature maxima, and cold haloclines typical of the Eurasian Basins. We present estimates of the vertical turbulent diffusivity derived from the dissipation rate of thermal variance and calculations of the associated vertical heat fluxes. We find that vertical diffusion proceeds at molecular rates in the deep basins and away from topographic features. While still relatively small, diffusivity is enhanced by 1 order of magnitude near and above the Chukchi Borderlands. The enhanced diffusivity is correlated to an increase in water column strain variance above the Borderlands, providing a linkage between bathymetry, internal wave activity and turbulence. The Chukchi Borderlands play a significant role in heat transport in the Western Arctic. They are a pathway for horizontal heat transport and a hot spot for vertical heat transport. Vertical fluxes make a substantial contribution to the energy balance of the sea ice cover in this region. Heat fluxes between the halocline and underlying Atlantic Water are shown to be small and lacking vertical connection near surface waters.en_US
dc.publisherAGU Publicationsen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleVertical diffusivity of the Western Arctic Ocean haloclineen_US
dc.typeArticleen_US
dc.contributor.departmentOceanographyen_US


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