Abstract
This paper presents results from numerical investigations into mass transport driven by periodic internal waves in a two-layer fluid system. The experiments concentrate on particle transport inside the interface and its adjacent regions. A series of numerical experiments were carried out for different interfacial thicknesses. We found that the mass transport velocity does not reach a maximum at the center of the interface but at the two boundaries between the interface and the layers. For a thin interface, particles near the interface travel in the direction of propagating waves. However, as the interfacial thickness increases, particles in the interfacial layer might remain stationary or they may move back offshore, against propagating waves.
