| swPressure {oce} | R Documentation |
Compute seawater pressure from depth by inverting swDepth
using uniroot.
swPressure(depth, latitude = 45, eos = getOption("oceEOS", default =
"gsw"))
depth |
distance below the surface in metres. |
latitude |
Latitude in degN or radians north of the equator. |
eos |
indication of formulation to be used, either |
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.
Pressure in dbar.
Dan Kelley
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,
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
swPressure(9712.653, 30, eos="unesco") # 10000 swPressure(9712.653, 30, eos="gsw") # 9998.863