The picture is from the experiments conducted
in a wave flume on a two-layer fluid. The motion of a surface wave has led to generation of a
three-dimensional nearly-standing wave pattern at the interface through a
three-wave resonant interaction mechanism. The pattern is due to combination of two nearly-subharmonic oblique interfacial
waves and the corresponding reflected interfacial waves from the flume side
walls. The original interfacial waves have nearly the same kinematic properties
but opposite propagation directions. The
upper layer is fresh water, and the lower layer is saline water.
References:
1. Jamali, M. (1998) "Surface wave interaction with oblique internal waves". Ph.D. Thesis,
The University of British Columbia, Vancouver, Canada.
2. Jamali, M., Lawrence, G., and Quick, M. (2000) "Generation of oblique internal waves by a surface wave",
Proc. 5th Int. Symp. Stratified
Flows, p. 779.
Contributors: Mirmosadegh Jamali, Sherif University of Technology, Tehran,
Iran and Greg Lawrence, The Univesity of British Columbia, Vancouver, Canada.
