Discussion
Which of the following waves is formed due to disturbance at Pycnocline ?
Answer: C
The wave is an Internal wave.
The pycnocline is the layer in which water density changes sharply with depth, separating lighter surface water from denser deep water. A disturbance there sets off internal waves that travel along this boundary below the surface. Because the density difference is small, they can reach heights of tens of metres while barely showing at the surface.
Swell is made of wind waves that have travelled out of the area where they were generated. A seiche is a standing oscillation of a lake or enclosed basin. Capillary waves are tiny ripples on the surface restored by surface tension. None of these forms at the pycnocline.
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