sw.sound.speed {oce}R Documentation

Seawater sound speed

Description

Compute the seawater speed of sound.

Usage

speed <- sw.sound.speed(ctd)
speed <- sw.sound.speed(S, t=NULL, p=NULL)

Arguments

ctd an object of class "ctd".
S salinity [PSU]
t in-situ temperature [degC]
p pressure [dbar]

Details

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).

Value

Sound speed [m/s].

Author(s)

Dan Kelley

References

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.)

Examples

s <- sw.sound.speed(40, 40, 10000) # 1731.995 (p48 of Fofonoff + Millard 1983)

[Package oce version 0.1.72 Index]