Internal Gravity Waves from an Oscillating Source in the Ocean

The problem of the generation of internal gravity waves (IGWs) by a localized source of perturbations is considered. An oscillating source is located in the ocean with arbitrary depth distributions of the buoyancy frequency and background shear current. Integral representations of solutions are obta...

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Bibliographic Details
Published in:Izvestiya. Atmospheric and oceanic physics 2021-05, Vol.57 (3), p.321-328
Main Authors: Bulatov, V. V., Vladimirov, Yu. V., Vladimirov, I. Yu
Format: Article
Language:English
Subjects:
Algorithms
Brunt-vaisala frequency
Buoyancy
Climatology
Dispersion
Dispersion curve analysis
Earth and Environmental Science
Earth Sciences
Fields
Geophysics/Geodesy
Gravity waves
Internal gravity waves
Internal waves
Numerical analysis
Oceans
Perturbation
Shear
Shear flow
Stability
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Summary:The problem of the generation of internal gravity waves (IGWs) by a localized source of perturbations is considered. An oscillating source is located in the ocean with arbitrary depth distributions of the buoyancy frequency and background shear current. Integral representations of solutions are obtained under the Miles–Howard stability condition. To solve the spectral problem, a numerical algorithm is proposed for calculating the main dispersion relations, which determine the phase characteristics of the generated waves. For the characteristic distributions of the buoyancy frequency and background shear flows observed in the ocean, the results of numerical calculations of dispersion curves and phase patterns of wave fields are presented. The transformation of the phase patterns of IGW fields is studied numerically for various generation parameters.
ISSN:0001-4338
1555-628X
DOI:10.1134/S0001433821030026