Progressive Wave
Light, Sound and Waves

Internal waves

Stories from Physics for 11-14 14-16 IOP RESOURCES

Waves are not restricted to the surface of fluids but can occur, under the right conditions, within them as well. Internal waves can occur at the boundary between layers of fluid with different densities. The amplitude of internal waves can be an order of magnitude greater than that of surface waves. This is because the generation of internal waves requires less energy than for surface waves as the difference in densities between layers is typically less than for the water-air boundary. Some of the largest ocean waves are internal waves — in the Luzon Strait, in the South China Sea, subsurface internal waves with a height of 170 m have been recorded.


Limit Less Campaign

Support our manifesto for change

The IOP wants to support young people to fulfil their potential by doing physics. Please sign the manifesto today so that we can show our politicians there is widespread support for improving equity and inclusion across the education sector.

Sign today