| swDepth {oce} | R Documentation |
Water Depth
Description
Compute depth below the surface (i.e. a positive number within the
water column) based on pressure and latitude. (Use swZ()
to get the vertical coordinate, which is negative within the water
column.)
Usage
swDepth(pressure, latitude = 45, eos = getOption("oceEOS", default = "gsw"))
Arguments
pressure |
either pressure (dbar), in which case |
latitude |
Latitude in |
eos |
indication of formulation to be used, either |
Details
If eos="unesco" then depth is calculated from pressure using Saunders
and Fofonoff's method, with the formula refitted for 1980 UNESCO equation of
state (reference 1). If eos="gsw", then gsw::gsw_z_from_p() from
the gsw package (references 2 and 3) is used.
Value
Depth below the ocean surface, in metres.
Author(s)
Dan Kelley
References
Unesco 1983. Algorithms for computation of fundamental properties of seawater, 1983. Unesco Tech. Pap. in Mar. Sci., No. 44, 53 pp.
IOC, SCOR, and IAPSO (2010). The international thermodynamic equation of seawater-2010: Calculation and use of thermodynamic properties. Technical Report 56, Intergovernmental Oceanographic Commission, Manuals and Guide.
McDougall, T.J. and P.M. Barker, 2011: Getting started with TEOS-10 and the Gibbs Seawater (GSW) Oceanographic Toolbox, 28pp., SCOR/IAPSO WG127, ISBN 978-0-646-55621-5.
See Also
Other functions that calculate seawater properties:
T68fromT90(),
T90fromT48(),
T90fromT68(),
computableWaterProperties(),
locationForGsw(),
swAbsoluteSalinity(),
swAlphaOverBeta(),
swAlpha(),
swBeta(),
swCSTp(),
swConservativeTemperature(),
swDynamicHeight(),
swLapseRate(),
swN2(),
swPressure(),
swRho(),
swRrho(),
swSCTp(),
swSR(),
swSTrho(),
swSigma0(),
swSigma1(),
swSigma2(),
swSigma3(),
swSigma4(),
swSigmaTheta(),
swSigmaT(),
swSigma(),
swSoundAbsorption(),
swSoundSpeed(),
swSpecificHeat(),
swSpice(),
swSstar(),
swTFreeze(),
swTSrho(),
swThermalConductivity(),
swTheta(),
swViscosity(),
swZ()
Examples
d <- swDepth(10, 45)