Now and then I run across discussion on devices or materials that generate electricity when they experience changes in pressure. This always leads to discussions on how you can create these pressure changes. This got me curious about how pressure is affected at various depths from changes at the surface such as tides or even rolling waves. Does the pressure fan out like a sound wave or does it transmit directly below the wave as it moves?
In water, pressure is determined a few ways. Mainly by how deep you are under the water (hydrostatic pressure) so a wave crest means you are deeper under water and hence more pressure (although I think this is not noticeable deep under the water…the difference is too minuscule to notice).
There is also dynamic pressure: Under a wave crest or trough.
Combined pressure is a combo of those two.
I am interested in small fluctuations of pressure at depths below about 200 ft minimum.