sw.viscosity {oce} | R Documentation |
Compute viscosity of seawater, in Pa*s
v <- sw.viscosity(ctd) v <- sw.viscosity(S, t=NULL)
ctd |
an object of class "ctd ". |
S |
salinity [PSU] |
t |
in-situ temperature [degC] |
In the first form, the argument is a ctd
object, from which the
salinity, temperature and pressure values are extracted and used to
for the calculation.
Derived from a curve fit to table 87 of Dorsey (1940). The fit matches the table to within 0.2 percent at worst, and with average absolute error of 0.07 percent. The maximum deviation from the table is one unit in the last decimal place.
No pressure dependence was reported by Dorsey (1940).
Viscosity of seawater in Pa*s. Divide by density to get kinematic viscosity in m^2/s.
Dan Kelley
N. Ernest Dorsey (1940), Properties of ordinary Water-substance, American Chemical Society Monograph Series. Reinhold Publishing.
v <- sw.viscosity(30,10); # 0.001383779