Take the 2-minute tour ×
Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. It's 100% free, no registration required.

When I disturb a body of water, what causes the familiar "water moving" sound?

share|improve this question
    
I can think of two different "water moving" sounds: a) a pebble falling into water, water jumping up around it and causing waves; and b) a biggish body (e.g. a human) jumping in, causing the same effect as in (a) but also having moved enough water away from the impact center to have its refilling cause another sound of water fronts clashing together. –  weiqure Nov 6 '10 at 17:49
    
You can find some sounds of water here. Maybe it helps if you specify what kind of "water moving" sounds you mean. Waves, objects moving in water? If something on the linked site sounds like what you mean, a first step might be to look at the mp3 file using a program like Audacity. –  weiqure Nov 6 '10 at 18:04
    
Just literally any sound that water makes; I'd like to know what specifically creates the particular-sounding sound waves that hit our ears when water splashes, plops, hisses or otherwise. –  tags2k Nov 7 '10 at 0:05

5 Answers 5

From Sklivvz's answer: "a high pitched slapping sound when the stone makes contact with the water. This is due to the air between the stone and the water being pushed out, as well as the surface ripples"

I think the high-pitched sound is caused mainly by the breakdown of the tension formed by the water layer on the surface (see http://en.wikipedia.org/wiki/Surface_tension for more detail). So it's similar to slapping a table with your hand.

share|improve this answer

The major source of sound when water is disturbed is the creation of bubbles, which oscillate at a resonant frequency underwater.

share|improve this answer

Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas, composed of frequencies within the range of hearing and of a level sufficiently strong to be heard, or the sensation stimulated in organs of hearing by such vibrations.

Something(can be stone/ pebbles/ hands/ water etc.) interacting with water creates "oscillation of pressure". Nature of "oscillation of pressure" depends on both water and interacting substance. And mostly familiar things interact with water thus giving rise to the characteristic sounds.

share|improve this answer

If you throw a stone in a large body of water, this is what you should hear:

  • a high pitched slapping sound when the stone makes contact with the water. This is due to the air between the stone and the water being pushed out, as well as the surface ripples
  • a low pitched sound growing in pitch (like "Doo-eeeee" ;-) due to the stone sinking and leaving an air "hole" in the water in its trail; this is then filled gradually with water which makes the sound raise in pitch
  • a bubbling sound due to air bubbles trapped under water by the stone, emerging.
  • a random noise due to waves colliding on the surface of the water.
share|improve this answer
8  
+1 for Doo-eeeee ;) –  tsudot Nov 7 '10 at 19:36
7  
I think it's more of a "Bluuu-iiib", myself. –  Niel de Beaudrap Sep 24 '11 at 20:30

As your question is very general, I can suggest a general answer: when a water wave is hitting a wall for example, you can "trap" an air bubble between the wave and the walls. This bubble can be compressed, the pressure will be higher and when the water moves, this bubble "explode" emitting a sound (which is nothing else than a pressure wave).

share|improve this answer
2  
It is usually good practice to comment when you downvote ... –  Cedric H. Nov 14 '10 at 11:58

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.