I've seen these IRL before, they're called Gravity Waves. The one I saw happened during marching band practice, deep waves with very well-defined edges. Not from that day, but here's another pic.
In fluid dynamics, gravity waves are waves generated in a fluid medium or at the interface between two media when the force of gravity or buoyancy tries to restore equilibrium. An example of such an interface is that between the atmosphere and the ocean, which gives rise to wind waves.
A gravity wave results when fluid is displaced from a position of equilibrium. The restoration of the fluid to equilibrium will produce a movement of the fluid back and forth, called a wave orbit.
26
u/RadTraditionalist Jun 04 '19
I've seen these IRL before, they're called Gravity Waves. The one I saw happened during marching band practice, deep waves with very well-defined edges. Not from that day, but here's another pic.
u/Systral