sw.sound.speed {oce}R Documentation

Seawater sound speed

Description

Compute the seawater speed of sound.

Usage

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

Arguments

S either salinity [PSU] (in which case t and p must be provided) or a ctd object (in which case S, t and p are determined from the object, and must not be provided in the argument list).
t in-situ temperature [degC]
p pressure [dbar]

Details

If the first argument is a ctd object, then salinity, temperature and pressure values are extracted from it, and used 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 0.1-76 Index]