Information AboutGravity Wave |
| CATEGORIES ABOUT GRAVITY WAVE | |
| fluid dynamics | |
| atmospheric dynamics | |
| waves | |
| water waves | |
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In Fluid Dynamics , gravity waves are those generated in a Fluid medium or on an Interface (e.g. the atmosphere or ocean) and having a restoring Force of Gravity or Buoyancy . When a Fluid Parcel is displaced on an interface or internally to a region with a different Density , gravity restores the parcel toward Equilibrium resulting in an Oscillation about the Equilibrium State . Gravity waves on an air-sea interface are called surface gravity waves or Surface Wave s while internal gravity waves are called Internal Wave s. ATMOSPHERE DYNAMICS ON EARTH , USA ]] Since the fluid is a Continuous medium, a traveling disturbance will result. In the earth's Atmosphere , gravity waves are important for transferring Momentum from the Troposphere to the Mesosphere . Gravity waves are generated in the troposphere by Frontal Systems or by airflow over Mountain s. At first waves propagate through the atmosphere without affecting its Mean Velocity . But as the waves reach more rarefied air at higher Altitude s, their Amplitude increases, and Nonlinear Effects cause the waves to break, transferring their momentum to the mean flow. This Process plays a key role in controlling the Dynamics of the middle Atmosphere . REFERENCES AND EXTERNAL LINKS
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