What is maximum positive displacement o periodic surfacial disturbance?

The maximum positive displacement of a periodic surface disturbance refers to the highest point reached by a wave or oscillation above its equilibrium position. This value is commonly known as the amplitude of the wave. In the context of waves, such as sound or water waves, this maximum displacement is crucial for determining the wave's energy and intensity. The amplitude directly influences how we perceive the wave, such as its loudness in sound waves or the height of water waves.