# gsw_kappa_const_t_exact

`isothermal compressibility`

## USAGE:

`kappa_const_t_exact = gsw_kappa_const_t_exact(SA,t,p)`

## DESCRIPTION:

```Calculates isothermal compressibility of seawater.
Note. This is the compressibility of seawater AT CONSTANT IN-SITU
TEMPERATURE```
 ```Click for a more detailed description of isothermal compressibility at constant in-situ temperature.```

## INPUT:

```SA  =  Absolute Salinity                                        [ g/kg ]
t   =  in-situ temperature (ITS-90)                            [ deg C ]
p   =  sea pressure                                             [ dbar ]
( i.e. 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:

```kappa_const_t  =  isothermal compressibility                    [ 1/Pa ]
Note. The output units are 1/Pa not 1/dbar.```

## 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;]```
`kappa_const_t_exact = gsw_kappa_const_t_exact(SA,t,p)`
`kappa_const_t_exact =`
`1.0e-009 *`
```   0.419071646368281
0.418743202287955
0.422265764368337
0.437735100406753
0.440373818138017
0.441156576599537```

## AUTHOR:

`David Jackett, Trevor McDougall and Paul Barker   [ help@teos-10.org ]`

## VERSION NUMBER:

`3.05 (16th February, 2015)`

## 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. (2.15.1) of this TEOS-10 Manual.```
`The software is available from http://www.TEOS-10.org`