# gsw_sound_speed

    sound speed

## Contents

- USAGE:
- DESCRIPTION:
- INPUT:
- OUTPUT:
- EXAMPLE:
- AUTHOR:
- VERSION NUMBER:
- REFERENCES:

## USAGE:

    sound_speed = gsw_sound_speed(SA,t,p)

## DESCRIPTION:

    Calculates the speed of sound in seawater.

    Click for a more detailed description of sound speed.

## INPUT:

    SA   =  Absolute Salinity                                       [ g/kg ]
    t    =  in-situ temperature (ITS-90)                           [ deg C ]
    p    =  sea pressure                                            [ dbar ]
            ( ie. absolute pressure - 10.1325 dbar )

    SA & t need to have the same dimensions.
    p may have dimensions 1x1 or Mx1 or 1xN or MxN, where SA & t are MxN.

## OUTPUT:

    sound_speed  =  speed of sound in seawater                       [ m/s ]

## EXAMPLE:

    SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
    t =  [28.7856; 28.4329; 22.8103; 10.2600;  6.8863;  4.4036;]
    p =  [     10;      50;     125;     250;     600;    1000;]

    sound_speed = gsw_sound_speed(SA,t,p)

    sound_speed =

    1.0e+003 *

      1.542615803587414
      1.542703534065789
      1.530844979136360
      1.494409996920661
      1.487377102518027
      1.483934609078705

## AUTHOR:

    David Jackett, Paul Barker and Trevor McDougall.  [ help_gsw@csiro.au ]

## VERSION NUMBER:

    2.0 (23rd July, 2010)

## REFERENCES:

    IOC, SCOR and IAPSO, 2010: The international thermodynamic equation of
     seawater - 2010: Calculation and use of thermodynamic properties.
     Intergovernmental Oceanographic Commission, Manuals and Guides No. 56,
     UNESCO (English), 196 pp.  Available from the TEOS-10 web site.
      See Eqn. (2.17.1) of this TEOS-10 Manual.

    The software is available from http://www.TEOS-10.org