By Elijah Mt. Castle
The propagation of a gravity wave has been detected in cloud cover over the Eastern United States. A gravity wave is a wave generated in a fluid by the force of gravity or buoyancy attempting to restore equilibrium in the medium, i.e. the waves are caused by the fluid attempting to return to its resting place. When fluid is displaced from its equilibrium the fluid will move back and forth producing a wave. Gravity waves are responsible for many natural phenomena: ocean waves generated by wind; tsunamis; cloud patterns; and ocean tides. Pictured is an effect of a gravity wave on cloud cover over the United States. The rippled effect in the clouds could have been caused by a variety of interactions. This is a rare event to be captured so clearly by satellites.