how far does sound travel underwater..?


by hennas
Tags: sound, travel, underwater
hennas
hennas is offline
#1
Mar3-10, 07:55 AM
P: 1
Hi,
How far does sound travel underwater, and more importantly does it travel further in water than in air? If so why? I know that sound travels faster through water than air for obvious reasons (density), and I intuitively assume further, but I cannot explain why. Any help is appreciated.
Thanks
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0xDEADBEEF
0xDEADBEEF is offline
#2
Mar3-10, 05:29 PM
P: 824
It all depends on the absorption, where ever it is lower you get the the distance. Sorry I couldn't be bothered to do the math but the two links should give you numbers.

http://resource.npl.co.uk/acoustics/...n/physics.html
http://forum.studiotips.com/viewtopic.php?t=158
Kenneth Mann
Kenneth Mann is offline
#3
Mar6-10, 03:21 AM
P: 410
This is not explanatory, but whales, using very low frequency sound, can communicate across oceans.

KM

skeptic2
skeptic2 is offline
#4
Mar6-10, 08:18 AM
P: 1,784

how far does sound travel underwater..?


To expand a little on what Kenneth Mann said, whales can emit sounds so loud they cavitate water. I have heard it suggested that before the days of motorized ships it would have been possible for a whale at the north pole to have been heard by one at the sourth pole.


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