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Summary
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
Param List
Soil
Wr
Ws
a
n
m
Ss
0,0403
0,37068
0,08742
1,57535
0,36522042
Uu
0
0,42125
0,00340
1,34447
0,25621525
Lu
0
0,42121
0,01334
1,12614
0,11201094
Tt
0
0,55054
0,00681
1,08155
0,07540104
reference
↑ 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 .
Licensing
Public domain Public domain false false
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Date/Time Thumbnail Dimensions User Comment
current 16:15, 11 December 2013 802 × 635 (7 KB) McPot User requested conversion to PNG. Bot: Converting file to superior PNG file. (Uploaded new version of file using Wiki.java)
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