Astrophysics (index)

Internal Gravity Wave

(Internal Wave)
(ripples in a change in density in a fluid)

Internal Gravity Waves (Internal Waves) are like surface waves (e.g., on water) but are internal to the fluid and instead of being ripples on the surface of a fluid, are, for example, ripples on a surface between two regions of different density. They can also occur if the change in density is continuous (smooth) rather than discontinuous (abrupt, i.e., a surface). Like surface waves, the Gravitational force is the "spring" that is being exercised by the wave.