Contents
USAGE:
[SA_final, CT_final] = ...
gsw_melting_ice_into_seawater(SA,CT,p,saturation_fraction,w_Ih,t_Ih)
DESCRIPTION:
Calculates the Absolute Salinity and Conservative Temperature that
results when a given mass of ice melts and is mixed into a known mass
of seawater (whose properties are (SA,CT,p)).
INPUT:
SA = Absolute Salinity of seawater [ g/kg ]
CT = Conservative Temperature of seawater (ITS-90) [ deg C ]
p = sea pressure [ dbar ]
( i.e. absolute pressure - 10.1325 dbar )
saturation_fraction = the saturation fraction of dissolved air in
seawater. saturation_fraction must be between 0 and 1.
w_Ih = mass fraction of ice, that is the mass of ice divided by the
sum of the masses of ice and seawater. That is, the mass of
ice divided by the mass of the final mixed fluid.
w_ice must be between 0 and 1. [ unitless ]
t_Ih = the in-situ temperature of the ice (ITS-90) [ deg C ]
SA, CT, w_Ih, and t_Ih must have the same dimensions.
p and saturation_fraction may have dimensions 1x1 or Mx1 or 1xN or MxN,
where SA, CT, w_Ih and t_Ih are MxN.
OUTPUT:
SA_final = Absolute Salinity of the mixture of the melted ice
and the orignal seawater [ g/kg ]
CT_final = Conservative Temperature of the mixture of the melted
ice and the orignal seawater [ deg C ]
EXAMPLE:
SA = [34.7118; 34.8915; 35.0256; 34.8472; 34.7366; 34.7324;]
CT = [ 4.7856; 2.4329; 1.8103; 1.2600; 0.6886; 0.4403;]
p = [ 10; 50; 125; 250; 600; 1000;]
saturation_fraction = [1; 0.8; 0.6; 0.5; 0.4; 0;]
w_Ih = [0.0560; 0.02513; 0.02159; 0.01210; 0.00943; 0.00751;]
t_Ih = [-4.7856; -4.4329; -3.8103; -4.2600; -3.8863; -3.4036;]
[SA_final, CT_final] = ...
gsw_melting_ice_into_seawater(SA,CT,p,saturation_fraction,w_Ih,t_Ih)
SA_final =
32.767939199999994
34.014676604999998
34.269397295999994
34.425548880000001
34.409033862000001
34.471559675999998
CT_final =
-0.298448911022612
0.215263001418311
-0.074341719211558
0.207796293045473
-0.123785388299875
-0.202531182809225
AUTHOR:
Trevor McDougall & Paul Barker [ help@teos-10.org ]
VERSION NUMBER:
3.04 (3rd January, 2014)
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.
The software is available from http://www.TEOS-10.org