Is that photo for real? Why would the waves react like that? Must be something under the water.
... if the beach is smooth and very long, whyte no strong wind, water can develop a resonance pattern over time. Of course, the main effect is based on some underwater obstacle further away or underwater dynamics whyte two slower or faster streams - diffraction that is :
Something similar can be achieved in test-tanks, if the water-dept and dimensions of the tank are set right to the frequency of its pendulum movement. People who construct ships and ground-effect vehicles have some good books on these things as they need to simulate different weather conditions in test tanks on scale-models.
Gent guys have some interesting reading on their site too ...
http://www.shallowwater.ugent.be/EN/kc_ond_int_EN.htm... maybe they could provide some interesting water interaction simulation models for navy-simmers.
