Preliminary simulations of internal waves and mixing generated by finite amplitude tidal flow over isolated topography


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dc.contributor.author Legg, Sonya
dc.contributor.author Huijts, Karin M. H.
dc.date.accessioned 2006-04-24T14:43:13Z
dc.date.available 2006-04-24T14:43:13Z
dc.date.issued 2005-09-29
dc.identifier.uri http://hdl.handle.net/1912/892
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): 140-156, doi:10.1016/j.dsr2.2005.09.014. en
dc.description.abstract Much recent observational evidence suggests that energy from the barotropic tides may be used for mixing in the deep ocean. Here the process of internal tide generation and dissipation by tidal flow over an isolated Gaussian topography is examined, using 2-dimensional numerical simulations employing the MITgcm. Four different topographies are considered, for five different amplitudes of barotropic forcing, thereby allowing a variety of combinations of key nondimensional parameters. While much recent attention has focused on the role of relative topographic steepness and height in modifying the rate of conversion of energy from barotropic to baroclinic modes, here attention is focused on parameters dependent on the flow amplitude. For narrow topography, large amplitude forcing gives rise to baroclinic responses at higher harmonics of the forcing frequency. Tall narrow topographies are found to be the most conducive to mixing. Dissipation rates in these calculations are most efficient for the narrowest topography. en
dc.description.sponsorship KH was supported by a Summer Student Fellowship at Woods Hole Oceanographic Institution. SL was supported by Office of Naval Research grant N00014-03-1-0336. en
dc.format.extent 2366084 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.relation.uri http://dx.doi.org/10.1016/j.dsr2.2005.09.014
dc.subject Tides en
dc.subject Internal waves en
dc.subject Ocean mixing en
dc.title Preliminary simulations of internal waves and mixing generated by finite amplitude tidal flow over isolated topography en
dc.type Preprint en

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