Internal wave
Videos
Internal waves are gravity waves that oscillate within a fluid medium, rather than on its surface. To exist, the fluid must be stratified: the density must change with depth/height due to changes, for
Internal waves (marked with arrows), caused by tidal flow through the Strait of Gibraltar and made visible by sea surface roughness enhance sunlight backscatter
Internal Wave trains around Trinidad, as seen from space
Dispersion (water waves)
Videos
In fluid dynamics, dispersion of water waves generally refers to frequency dispersion, which means that waves of different wavelengths travel at different phase speeds. Water waves, in this context, a
North Pacific storm waves as seen from the NOAA M/V Noble Star, Winter 1989.