File:Wrc.png

Attention: Due to a typo in the underlying equation this plot shows the wrong curves. Please use the corrected vector version File:Wrc.svg instead.

Water retention curve from: http://en.wikipedia.org/wiki/Image:Wrc.jpg

calculated diagram of soil with model formula (van Genuchten, 1980) ^[1]

F(p) = Wr + (Ws - Wr) / ( (1 + (a * |p|) exp(n) ) exp(m) )

with m = 1 - 1/n

1. ↑ Ad-hoc-AG Boden (2004-09-17). Verknüpfungsregel 1.18 – Parameter für das Modell einer stetigen Funktion der θ(ψ)-Beziehung (in German) (PDF, 242 KiB). Staatlichen Geologischen Dienste und BGR. Archived from the original on 2016-03-04. Retrieved on 2015-07-29.

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