unitHydrograph: Unit Hydrograph

Description Usage Arguments Value Note Author(s) See Also Examples

View source: R/unitHydrograph.R

Description

Calculate continuous unit hydrograph with given n and k (in the framework of the linear storage cascade)

Usage

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Arguments

n

Numeric. Number of storages in cascade.

k

Numeric. Storage coefficient [1/s] (resistance to let water run out). High damping = slowly reacting landscape = high soil water absorbtion = high k.

t

Numeric, possibly a vector. Time [s].

force

Logical: Force the integral of the hydrograph to be 1? DEFAULT: FALSE

Value

Vector with the unit hydrograph along t

Note

The sum under the UH should always be 1 (if t is long enough). This needs yet to be checked...

Author(s)

Berry Boessenkool, [email protected], July 2013

See Also

lsc on how to estimate n and k for a given discharge dataset. deconvolution.uh in the package hydromad, http://hydromad.catchment.org

Examples

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Time <- 0:100
plot(Time, unitHydrograph(n=2,  k=3, t=Time), type="l", las=1,
     main="Unit Hydrograph - linear storage cascade")
lines(Time, unitHydrograph(n=2,  k=8, t=Time), col=2)
lines(Time, unitHydrograph(n=5.5,k=8, t=Time), col=4)
text(c(12, 20, 50), c(0.1, 0.04, 0.025), c("n=2, k=3","n=2, k=8","n=5.5, k=8"),
     col=c(1,2,4), adj=0)

maxdschneider/golmtutorial documentation built on Aug. 3, 2017, 12:35 a.m.