sw.sound.speed {oce} | R Documentation |
Compute the seawater speed of sound.
speed <- sw.sound.speed(ctd) speed <- sw.sound.speed(S, t=NULL, p=NULL)
ctd |
an object of class "ctd ". |
S |
salinity [PSU] |
t |
in-situ temperature [degC] |
p |
pressure [dbar] |
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.
The sound speed is calculated using the formulation in section 9 of Fofonoff and Millard (1983).
Sound speed [m/s].
Dan Kelley
Fofonoff, P. and R. C. Millard Jr, 1983. Algorithms for computation of fundamental properties of seawater. Unesco Technical Papers in Marine Science, 44, 53 pp. (See section 9.)
N/A.
s <- sw.sound.speed(40, 40, 10000) # 1731.995 (p48 of Fofonoff + Millard 1983)