How entraining density currents influence the stratification in a one-dimensional ocean basin

dc.contributor.author Wåhlin, A. K.
dc.contributor.author Cenedese, Claudia
dc.date.accessioned 2006-04-25T12:56:17Z
dc.date.available 2006-04-25T12:56:17Z
dc.date.issued 2005-11-03
dc.description Author Posting. © The Authors, 2005. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Deep Sea Research Part II: Topical Studies in Oceanography 53 (2006): 172-193, doi:10.1016/j.dsr2.2005.10.019. en
dc.description.abstract The sensitivity of the basin-scale ocean stratification to the vertical distribution of plume entrainment is being analyzed. A large ocean basin supplied by dense water from an adjoining marginal sea is considered. The dense water flows into the ocean basin as an entraining density current and interleaves at the bottom (or at the level of neutral density), where it deposits a mixture of marginal seaand basin water. As the basin water, i.e. 'old' plume water, is entrained and re-circulated in the plume a stratification develops in the basin. The mixture deposited at the bottom hence contains an increasing fraction of marginal sea water, and the basin density increases with depth as well as with time. A stationary solution in which diffusion of buoyancy from above is important is approached asymptotically in time. Non-diffusive solutions to the initial transient adjustment, as well as the diffusive asymptotic state, have been studied in four different parameterizations of plume entrainment. It is shown that in the transient regime the basin stratification and plume density are highly sensitive to how mixing is parameterized. The stationary diffusive solution that is approached asymptotically in time is less sensitive to parameterization but depends strongly on basin topography, source water density, and buoyancy flux at the surface. en
dc.description.sponsorship Part of this work was funded by Göteborg University and the Swedish Research Council under the contract G600-335/2001 through Prof. A. Omstedt. Support was given to CC by the National Science Foundation project number OCE-0050891. en
dc.format.extent 715389 bytes
dc.format.extent 960696 bytes
dc.format.mimetype application/pdf
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dc.identifier.uri https://hdl.handle.net/1912/897
dc.language.iso en_US en
dc.relation.uri https://doi.org/10.1016/j.dsr2.2005.10.019
dc.subject Overflows en
dc.subject Plumes en
dc.subject Mixing parameterization en
dc.subject Ekman transport en
dc.subject Advective-diffusive balance en
dc.subject Filling box models en
dc.title How entraining density currents influence the stratification in a one-dimensional ocean basin en
dc.title.alternative How entraining density currents influence the ocean stratification en
dc.type Preprint en
dspace.entity.type Publication
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relation.isAuthorOfPublication 34258ccc-c83e-4877-9134-c236f6bb2cba
relation.isAuthorOfPublication.latestForDiscovery e14c7fa0-95a5-4e45-b8a4-24b6f305df7f
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