swPressure(depth, latitude = 45, eos = getOption("oceEOS", default = "gsw"))distance below the surface in metres.
Latitude in \(^\circ\)N.
indication of formulation to be used, either "unesco" or
"gsw".
Pressure in dbar.
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.
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(),
swAlphaOverBeta(),
swAlpha(),
swBeta(),
swCSTp(),
swConservativeTemperature(),
swDepth(),
swDynamicHeight(),
swLapseRate(),
swN2(),
swRho(),
swRrho(),
swSCTp(),
swSR(),
swSTrho(),
swSigma0(),
swSigma1(),
swSigma2(),
swSigma3(),
swSigma4(),
swSigmaTheta(),
swSigmaT(),
swSigma(),
swSoundAbsorption(),
swSoundSpeed(),
swSpecificHeat(),
swSpice(),
swSstar(),
swTFreeze(),
swTSrho(),
swThermalConductivity(),
swTheta(),
swViscosity(),
swZ()
swPressure(9712.653, 30, eos="unesco") # 10000
#> [1] 10000
swPressure(9712.653, 30, eos="gsw") # 9998.863
#> [1] 9998.863