Description Usage Arguments Value Note Author(s) See Also Examples
Calculate continuous unit hydrograph with given n and k (in the framework of the linear storage cascade)
1 | unitHydrograph(n, k, t, force = FALSE)
|
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 |
Vector with the unit hydrograph along t
The sum under the UH should always be 1 (if t is long enough). This needs yet to be checked...
Berry Boessenkool, berry-b@gmx.de, July 2013
lsc
on how to estimate n and k for a given discharge dataset. deconvolution.uh
in the package hydromad, http://hydromad.catchment.org
1 2 3 4 5 6 7 | 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)
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