# gsw_ionic_strength_from_SA

    ionic strength of seawater

## Contents

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

## USAGE:

    ionic_strength = gsw_ionic_strength_from_SA(SA)

## DESCRIPTION:

    Calculates the ionic strength of seawater.

## INPUT:

    SA =  Absolute Salinity                                         [ g/kg ]

## OUTPUT:

    ionic_strength  =  ionic strength of seawater                 [ mol/kg ]

## EXAMPLE:

    SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]

    ionic_strength = gsw_ionic_strength_from_SA(SA)

    ionic_strength =

       0.712981183609951
       0.716805667801764
       0.719660593278309
       0.715862716115311
       0.713508907524334
       0.713419533018609

## AUTHOR:

    Trevor McDougall and Paul Barker             [ help@teos-10.org ]

## VERSION NUMBER:

    3.01 (18th May, 2011)

## 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 Table L.1 of this TEOS-10 Manual.

    Millero, F. J., R. Feistel, D. G. Wright, and T. J. McDougall, 2008:
     The composition of Standard Seawater and the definition of the
     Reference-Composition Salinity Scale, Deep-Sea Res. I, 55, 50-72.
      See Eqns. (5.9) and (5.12) of this paper.

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