Articles | Volume 25, issue 3
© Author(s) 2018. This work is distributed underthe Creative Commons Attribution 4.0 License.
Internal waves in marginally stable abyssal stratified flows
Abstract. The problem on internal waves in a weakly stratified two-layer fluid is studied semi-analytically. We discuss the 2.5-layer fluid flows with exponential stratification of both layers. The long-wave model describing travelling waves is constructed by means of a scaling procedure with a small Boussinesq parameter. It is demonstrated that solitary-wave regimes can be affected by the Kelvin–Helmholtz instability arising due to interfacial velocity shear in upstream flow.