Email this article Internal gravity waves in the ocean with shear flows excited by non-stationary sources
- Authors: Bulatov V.V.1, Vladimirov I.Y.2, Morozov Е.G.2
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Affiliations:
- Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences
- Shirshov Oceanology Institute, Russian Academy of Sciences
- Issue: Vol 520, No 1 (2025)
- Pages: 148-153
- Section: OCEANOLOGY
- Submitted: 29.05.2025
- Accepted: 29.05.2025
- Published: 30.05.2025
- URL: https://journal-vniispk.ru/2686-7397/article/view/294342
- DOI: https://doi.org/10.31857/S2686739725010163
- EDN: https://elibrary.ru/GVPVWO
- ID: 294342
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Abstract
The problem of internal gravity wave generation by a localized oscillating disturbance source in the ocean of finite depth with background shear currents is considered. Model representations of the buoyancy frequency and the shear current distribution by depth are used to construct analytical solutions in the linear approximation. Under the Miles–Howard assumption, an integral representation of the solution is constructed as a sum of wave modes. Using the stationary phase method, an asymptotic representation of the solution for an individual mode is obtained. The spatial transformation of the phase structures of wave fields is studied depending on the oscillation frequency of the disturbance source and the main characteristics of the shear currents. Experimentally measured shear flows in abyssal channels are shown and compared with the results of laboratory modeling.
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About the authors
V. V. Bulatov
Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences
Author for correspondence.
Email: internalwave@mail.ru
Russian Federation, Moscow
I. Yu. Vladimirov
Shirshov Oceanology Institute, Russian Academy of Sciences
Email: iyuvladimirov@rambler.ru
Russian Federation, Moscow
Е. G. Morozov
Shirshov Oceanology Institute, Russian Academy of Sciences
Email: egmorozov@mail.ru
Russian Federation, Moscow
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Supplementary files
Note
Presented by Academician of the RAS M.V. Flint August 12, 2024