Internal tide generation by arbitrary two-dimensional topography
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Peacock_Internal tide.pdf
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834.17 KB
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Author(s)
Peacock, Thomas
Echeverri, Paula
Date Issued
June 2010
Journal
Journal of Fluid Mechanics
Publisher
Cambridge University Press
Citation
ECHEVERRI, PAULA, and THOMAS PEACOCK. Internal Tide Generation by Arbitrary Two-dimensional Topography. Journal of Fluid Mechanics 659 (September 30, 2010): 247-266. Copyright © Cambridge University Press 2010
Version
Final published version
Abstract
To date, analytical models of internal tide generation by two-dimensional ridges have considered only idealized shapes. Here, we advance the Green function approach to address the generation of internal tides by two-dimensional topography of arbitrary shape, employing the Wentzel-Kramers-Brillouin (WKB) approximation to consider the impact of non-uniform stratifications. This allows for a more accurate analytical estimation of tidal conversion rates. Studies of single and double ridges reveal that the conversion rate and the nature of the radiated internal tide can be sensitive to the topographic shape, particularly around criticality and when there is interference between wave fields generated by neighbouring ridges. The method is then applied to the study of two important internal tide generation sites, the Hawaiian and Luzon Ridges, where it captures key features of the generation process.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1017/s0022112010002417
