Topic
Internal wave
About: Internal wave is a research topic. Over the lifetime, 8311 publications have been published within this topic receiving 221331 citations. The topic is also known as: Internal_wave.
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TL;DR: In this paper, internal waves generated by a barotropic wave impinging on a bottom ridge with continuously varying height are studied within the framework of the linear theory of long waves, where the diurnal tide travels at an arbitrary angle to the axis of the ridge located in the area of a geostrophic flow caused by tilting of the free sea surface and the interface of a two-layer ocean.
Abstract: Internal waves generated by a barotropic wave impinging on a bottom ridge with continuously varying height are studied within the framework of the linear theory of long waves. We consider the case where the diurnal tide travels at an arbitrary angle to the axis of the ridge located in the area of a geostrophic flow caused by tilting of the free sea surface and the interface of a two-layer ocean. We study the dependences of the amplitudes of internal waves on the velocity of the geostrophic flow, the direction of propagation of the barotropic tide, and the geometry of the ridge.
TL;DR: In this paper, non-linear density waves in a rotating stellar system are investigated within the framework of the gas-dynamic approximation endowing the system with an isotropic pressure.
Abstract: Non-linear density waves in a rotating stellar system are investigated within the framework of the gasdynamic approximation endowing the system with an isotropic pressure. The waves are assumed to be one-dimensional and steady in a uniformly rotating local coordinate system and to propagate at a constant velocity perpendicular to the axis of rotation. The results show that the waves are wave trains for the cases of supersonic flows, and that the waves are wave trains, or solitary waves for the cases of subsonic flows.
TL;DR: In this article, a linear integral relationship is proposed to associate the value of a harmonic function on the boundary of its derivative, and a system of integrodifferential equations is obtained for the function which determines the profile of the wave and the discontinuity in the potential at the interface of the flows.
27 May 1996
TL;DR: In this article, the effects of wave-current interaction scale with the surface velocity while the effect of surfactants scale as the ratio of surface current to phase velocity (u/c).
Abstract: X-band radar signatures of a current rip convergence, resulting from denser Gulf Stream fluid interacting with fresh coastal shelf water near Cape Hatteras, were observed during the First High Resolution (Hi-Res I) experiment. These signatures, which appeared as intense (/spl sim/10 dB) enhancements in radar cross section (RCS) in the form of meandering linear segments, were accompanied by secondary parallel meandering segments of reduced (/spl sim/5-10 dB) RCS on the shelf water side. The effects of wave-current interaction scale with the surface velocity (u) while the effects of surfactants scale as the ratio of surface current to phase velocity (u/c). Unlike internal waves which 'graze' upon the ambient surface film material, current rips 'herd' the ambient surface film material to a convergence point where u/c=1. The latter features can induce singular behaviour for a monomolecular surface film. A number of fundamental issues need to be resolved including: continuity of the surface film in regions of wave breaking; buckling of the monomolecular film; and subduction of the surfactant at the frontal boundary. These issues are highlighted through application to the Hi-Res I rip feature using a simplified one-dimensional model of the feature as well as the surface manifestation of currents derived from the associated depth-dependent structure.
01 Jan 2021
TL;DR: In this paper, a mathematical model of the internal waves and wave propagation in a two-layer fluid flow is presented, and its solution is based on asymptotic analysis for 0 < e < 1.
Abstract: This study presents mathematical model of the internal waves and examines wave propagation in a two-layer fluid flow. Elements of the functional-analytical approach are used to develop the model. A flat unsteady motion of a two-layer liquid under a cover over a flat bottom is considered. The fluid is assumed to be ideal and incompressible. Internal waves are caused by external pressure application to the interface between the layers, oscillation of the flat bottom and disturbances in the flow. The power of the wave source is characterized by dimensionless parameter e. The problem is formulated, and its solution is based on asymptotic analysis for 0