Note on the redistribution and dissipation of tidal energy over mid-ocean ridges
The redistribution and dissipation of internal wave energy arising from the conversion at mid-ocean ridges of the barotropic tide is studied in a set of numerical experiments. A two-dimensional non-hydrostatic model with 100 m horizontal and 10-25 m vertical resolution is used to represent the detai...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Co-Action Publishing,
2015-11-02T18:02:04Z.
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Online Access: | Get fulltext |
Summary: | The redistribution and dissipation of internal wave energy arising from the conversion at mid-ocean ridges of the barotropic tide is studied in a set of numerical experiments. A two-dimensional non-hydrostatic model with 100 m horizontal and 10-25 m vertical resolution is used to represent the detailed processes near an idealised ridge. Conventional internal wave beams at the tidal frequency, [superscript ѡ]M[subscript 2], appear. At the ridge crest, strong tidal energy dissipation occurs that both mixes the fluid and generates strong near-inertial oscillations radiating in near-horizontal beams. Resonant triad interaction between the tidal and inertial motions in turn produces beams at ([superscript ѡ]M[subscript 2] - f) and with high shear, thus effectively mixing fluid at considerable heights above the ridge crest. National Science Foundation (U.S.) (Grant OCE-0961713) United States. National Oceanic and Atmospheric Administration (Grant NA10OAR4310135) |
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