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Speed of Sound in Water?

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Noral D. Stewart

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Sep 17, 1999, 3:00:00 AM9/17/99
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Sea-Moon Kim wrote:
>
> I would like to know speed of sound in water (temperature: 20 - 26
> centigrade).
> Can anybody tell me the answer or a reference?
>
> Thank you in advance
>
> Sea-Moon Kim

Fresh water at 20 degrees C is 1481 m/sec.
Sea water at 13 degrees C is 1500 m/sec.
Ref. Kinsler & Frey, second edition

Sea-Moon Kim

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Sep 18, 1999, 3:00:00 AM9/18/99
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How about at 26 degrees C? :)
That is what I really want to know.

Sea-Moon Kim

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Sep 18, 1999, 3:00:00 AM9/18/99
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How about at 26 degrees C ?

Noral D. Stewart wrote:

Noral D. Stewart

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Sep 18, 1999, 3:00:00 AM9/18/99
to
Sea-Moon Kim wrote:
>
> How about at 26 degrees C? :)
> That is what I really want to know.
>

I will let you calculate it. The following are empirical equations from
Kinsler and Frey.

t is in degrees C and c is in m/sec.

In Fresh water c = 1403 + 5t - 0.06t^2 + 0.0003t^3

Good for 0 to 60 degrees C.

In sea water

c = 1449 +4.6t - 0.055t^2 + 0.0003t^3 + (1.39 - 0.012t)(S - 35) + 0.017d

Where S is the salinity expressed in parts per thousand, and d is the
depth below the surface in meters.

Andrew Hurrell

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Sep 22, 1999, 3:00:00 AM9/22/99
to Sea-Moon Kim
Sea-Moon Kim wrote:

> How about at 26 degrees C? :)
> That is what I really want to know.

Try this reference - it will give you an empirical formula

B. N. Bilaniuk and G.S.K. Wong, Speed of Sound in Pure Water as a
Function of Temperature
J. Acoust. Soc. Am. 93 (3), pp. 1609-1612, (1993)

Andrew Hurrell


John Goodwin

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Sep 23, 1999, 3:00:00 AM9/23/99
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Velocity depends on the composition and temperature of water. At long
ranges, there is a difference between speed (meaning average velocity as
measured in a straight line) and velocity (instantaneous measure at a
specific point) depending on the acoustic path (ray bending and all that
sort of thing)

If it is seawater can I refer you to "Principles of Underwater Sound"
by Robert Urick

"Physics of Sound in the Sea" a US Navy Publication based on research done
in the 1940s and 50s is still a highly respected source, but someone nicked
my copy. Anyone know where I can buy one?

Regards
John Goodwin
Principal Consultant
Logica UK Ltd (for whom I do not speak)

Andrew Hurrell wrote in message
<37E8A21B...@amh-consulting.freeserve.co.uk>...

Gary Sokolich

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Sep 23, 1999, 3:00:00 AM9/23/99
to John Goodwin
John Goodwin wrote:

> "Physics of Sound in the Sea" a US Navy Publication based on research done
> in the 1940s and 50s is still a highly respected source, but someone nicked
> my copy. Anyone know where I can buy one?

Time Capsule
Bill Lee, Time Capsule, P.O. Box 429, , Dillsboro, NC 28725 USA

Tel: (828) 586-1026
Email Address: time...@dnet.net
Form of Payment:Check, Visa or Mastercard
Returns Policy: Open
Shipping: $2.50 first book, $1 each additional

: Physics of Sound in the Sea ; Washington, D.C.: Dept. of Navy,
1969. reprint,
Blue cloth, vg, Photos, charts, Physics Navy Oceans Maritime
USD20.00


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