Transformation of internal waves at the bottom ledge
Paper
Paper/Presentation Title | Transformation of internal waves at the bottom ledge |
---|---|
Presentation Type | Paper |
Authors | Churaev, E. N. (Author), Semin, S. V. (Author) and Stepanyants, Y. A. (Author) |
Journal or Proceedings Title | Proceedings of the 19th Australasian Fluid Mechanics Conference (AFMC 2014) |
ERA Conference ID | 42494 |
Number of Pages | 4 |
Year | 2014 |
Place of Publication | Melbourne, Australia |
ISBN | 9780646596952 |
Web Address (URL) of Paper | http://people.eng.unimelb.edu.au/imarusic/proceedings/19/116.pdf |
Web Address (URL) of Conference Proceedings | https://people.eng.unimelb.edu.au/imarusic/proceedings/19%20AFMC%20TOC.htm |
Conference/Event | 19th Australasian Fluid Mechanics Conference (AFMC 2014) |
Australasian Fluid Mechanics Conference | |
Event Details | Australasian Fluid Mechanics Conference Rank A A A A A |
Event Details | 19th Australasian Fluid Mechanics Conference (AFMC 2014) Event Date 08 to end of 11 Dec 2014 Event Location Melbourne, Australia |
Abstract | Transformation of internal gravity waves on the oceanic shelf is studied theoretically and numerically within the framework of the linear approximation. It is assumed that internal waves pass over the continental shelf experiencing partial transmission and reflection. The problem is studied for the simplified model of the shelf represented by the sharp bottom ledge. The fluid stratification is assumed to be a two-layer with the density of the upper layer being rho_0, and the density of the lower layer being rho_1. The theoretical approximate formulae are proposed for the transmission and reflection coefficients as the functions of an incoming wave number, density ratio, a depth of the interface between the layers, and depth ratio before and after the ledge edge. Results of direct numerical modelling of linear internal waves transformation are presented as functions of all aforementioned parameters. The modelling was undertaken by means of the numerical code MITgcm. The results obtained are analysed in details and compared against the proposed formulae. |
Keywords | internal wave, transmission coefficient, reflection coefficient, bottom step, wave transformation |
ANZSRC Field of Research 2020 | 401207. Fundamental and theoretical fluid dynamics |
370803. Physical oceanography | |
490109. Theoretical and applied mechanics | |
Public Notes | Authors, or their employers or clients in the case of works made for hire, retain the following rights: ...5. The right to post an author-prepared version or an official version (preferred version) of the published paper on an internal or external server controlled exclusively by the author/employer, provided that (a) such posting is non‐commercial in nature and the paper is made available to users without charge; (b) a full citation and copyright notice appear with the paper, and (c) a link to the AFMS’s official online version of the abstract is provided. |
Byline Affiliations | Nizhny Novgorod State Technical University, Russia |
School of Agricultural, Computational and Environmental Sciences | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q2wvx/transformation-of-internal-waves-at-the-bottom-ledge
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