Isentropic Compressibility of Ice

Calculate isentropic compressibility of ice, in 1/Pa.

Usage

gsw_kappa_ice(t, p)

Arguments

t

in-situ temperature (ITS-90) [ degC ]

p

sea pressure [dbar], i.e. absolute pressure [dbar] minus 10.1325 dbar

Value

isentropic compressibility of ice [ 1/Pa ] (not 1/dbar)

Implementation Note

This R function uses a wrapper to a C function contained within the GSW-C system as updated 2022-10-11 at https://github.com/TEOS-10/GSW-C with git commit `657216dd4f5ea079b5f0e021a4163e2d26893371`.

The C function uses data from the library/gsw_data_v3_0.mat file provided in the GSW-Matlab source code, version 3.06-11. Unfortunately, this version of the mat file is no longer displayed on the TEOS-10.org website. Therefore, in the interests of making GSW-R be self-contained, a copy was downloaded from http://www.teos-10.org/software/gsw_matlab_v3_06_11.zip on 2022-05-25, the .mat file was stored in the developer/create_data directory of https://github.com/TEOS-10/GSW-R, and then the dataset used in GSW-R was created based on that .mat file.

Please consult http://www.teos-10.org to learn more about the various TEOS-10 software systems.

References

http://www.teos-10.org/pubs/gsw/html/gsw_kappa_ice.html

See also

Other things related to compressibility: gsw_kappa(), gsw_kappa_const_t_ice(), gsw_kappa_t_exact()

Examples

t <- c(-10.7856, -13.4329, -12.8103, -12.2600,  -10.8863,  -8.4036)
p <- c(      10,       50,      125,      250,       600,     1000)
kappa <- gsw_kappa_ice(t, p)
stopifnot(all.equal(kappa*1e9, c(0.112495239053936, 0.112070687842183, 0.112119091047584,
                                 0.112126504739297, 0.112123513812840, 0.112262589530974)))