Nonlinear interaction among internal wave beams generated by tidal flow over supercritical topography | Zendy

Lamb K. G. | Zendy

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Nonlinear interaction among internal wave beams generated by tidal flow over supercritical topography

Author(s) -

Lamb K. G.

Publication year - 2004

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2003gl019393

Subject(s) - supercritical fluid , internal wave , nonlinear system , supercritical flow , geology , internal tide , flow (mathematics) , harmonic , internal flow , mechanics , optics , physics , acoustics , quantum mechanics , thermodynamics

Internal wave beams are generated by tidal flow over topography. For supercritical topography the beams are narrower and higher harmonic beams more pronounced than for subcritical topography. Numerical simulations show that nonlinear interactions between two topographically generated beams generate internal wave beams with the sum and difference frequencies, significantly modifying the super‐tidal frequency portion of the internal wave field in the vicinity of supercritical topographic features.

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