oce (version 0.9-20)

swPressure: Water pressure

Description

Compute seawater pressure from depth by inverting swDepth using uniroot.

Usage

swPressure(depth, latitude = 45, eos = getOption("oceEOS", default = "gsw"))

Arguments

depth

distance below the surface in metres.

latitude

Latitude in $deg$N or radians north of the equator.

eos

indication of formulation to be used, either "unesco" or "gsw".

Value

Pressure in dbar.

Details

If eos="unesco" this is done by numerical inversion of swDepth is done using uniroot. If eos="gsw", it is done using gsw_p_from_z in the gsw package.

References

Unesco 1983. Algorithms for computation of fundamental properties of seawater, 1983. Unesco Tech. Pap. in Mar. Sci., No. 44, 53 pp.

See Also

Other functions that calculate seawater properties: T68fromT90, T90fromT48, T90fromT68, swAbsoluteSalinity, swAlphaOverBeta, swAlpha, swBeta, swCSTp, swConservativeTemperature, swDepth, swDynamicHeight, swLapseRate, swN2, swRho, swRrho, swSCTp, swSTrho, swSigma0, swSigma1, swSigma2, swSigma3, swSigma4, swSigmaTheta, swSigmaT, swSigma, swSoundAbsorption, swSoundSpeed, swSpecificHeat, swSpice, swTFreeze, swTSrho, swThermalConductivity, swTheta, swViscosity, swZ

Examples

swPressure(9712.653, 30, eos="unesco") # 10000
swPressure(9712.653, 30, eos="gsw")    #  9998.863