thermo.depth: Calculate depth of the thermocline from a temperature...
In rLakeAnalyzer: Lake Physics Tools

Description Usage Arguments Value See Also Examples

This function calculates the location of the thermocline from a temperature profile. It uses a special technique to estimate where the thermocline lies even between two temperature measurement depths, giving a potentially finer-scale estimate than usual techniques.

1 2	thermo.depth(wtr, depths, Smin = 0.1, seasonal = TRUE, index = FALSE, mixed.cutoff = 1)

`wtr`	a numeric vector of water temperature in degrees C
`depths`	a numeric vector corresponding to the depths (in m) of the wtr measurements
`Smin`	Optional paramter defining minimum density gradient for thermocline
`seasonal`	a logical value indicating whether the seasonal thermocline should be returned. This is fed to thermo.depth, which is used as the starting point. The seasonal thermocline is defined as the deepest density gradient found in the profile. If `FALSE`, the depth of the maximum density gradient is used as the starting point.
`index`	Boolean value indicated if index of the thermocline depth, instead of the depth value, should be returned.
`mixed.cutoff`	A cutoff (deg C) where below this threshold, thermo.depth and meta.depths are not calculated (NaN is returned). Defaults to 1 deg C.

Depth of thermocline. If no thermocline found, value is NaN.

ts.thermo.depth, water.density

# A vector of water temperatures
wtr = c(22.51, 22.42, 22.4, 22.4, 22.4, 22.36, 22.3, 22.21, 22.11, 21.23, 16.42, 
		15.15, 14.24, 13.35, 10.94, 10.43, 10.36, 9.94, 9.45, 9.1, 8.91, 8.58, 8.43)

 #A vector defining the depths
 depths = c(0, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 
     17, 18, 19, 20)

 t.d = thermo.depth(wtr, depths, seasonal=FALSE)

 cat('The thermocline depth is:', t.d)