Gravity wave

Atmospheric gravity waves as seen from space.

Do not confuse with gravitational wave.

In fluid dynamics, gravity waves are waves generated in a fluid medium or at the interface between two mediums (e.g. the atmosphere or ocean) which has the restoring force of gravity or buoyancy.

Other websites

• Gallery of cloud gravity waves over Iowa
• Time-lapse video of gravity waves over Iowa
• Water Waves Wiki Archived 2010-11-13 at the Wayback Machine