Water Pressure

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 \(^\circ\)N.
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::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.

Other functions that calculate seawater properties: T68fromT90(), T90fromT48(), T90fromT68(), computableWaterProperties(), locationForGsw(), swAbsoluteSalinity(), swAlpha(), swAlphaOverBeta(), swBeta(), swCSTp(), swConservativeTemperature(), swDepth(), swDynamicHeight(), swLapseRate(), swN2(), swRho(), swRrho(), swSCTp(), swSR(), swSTrho(), swSigma(), swSigma0(), swSigma1(), swSigma2(), swSigma3(), swSigma4(), swSigmaT(), swSigmaTheta(), swSoundAbsorption(), swSoundSpeed(), swSpecificHeat(), swSpice(), swSpiciness0(), swSpiciness1(), swSpiciness2(), swSstar(), swTFreeze(), swTSrho(), swThermalConductivity(), swTheta(), swViscosity(), swZ()

Author

Dan Kelley

Examples

swPressure(9712.653, 30, eos = "unesco") # 10000
#> [1] 10000
swPressure(9712.653, 30, eos = "gsw") #  9998.863
#> [1] 9998.863