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ROSETTA Class Average Hydraulic Parameters
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The table below gives class-average values of the seven hydraulic parameters for the twelve USDA textural classes. Effectively, this table represents the first model of the hierarchical sequence. For the qr, q s, a, n and Ks parameters, the values have been generated by computing the average values for each textural class. For Ko and L the values were generated by inserting the class average values of qr, qs, a, n into Model C2 (see Rosetta's help file). This means that Ko and L are based on predicted parameters and may not be very reliable. The values in parentheses give the one standard deviation uncertainties of the class average values
 
Texture
Class

 

 N

 


 		 -- qr --
cm3/cm3

 

 -- qs --
cm3/cm3

 

 -- log(a) --
log(1/cm)

 

 -- log(n) --
log10

 

 -- Ks --
log(cm/day)

 

 -- Ko --
log(cm/day)

 

 -- L --
 

 
Clay

 

 84

 

 0.098

 

 (0.107)

 

 0.459

 

 (0.079)

 

 -1.825

 

 (0.68)

 

 0.098

 

 (0.07)

 

 1.169

 

 (0.92)

 

 0.472

 

 (0.26)

 

 -1.561

 

 (1.39)

 
C loam

 

 140

 

 0.079

 

 (0.076)

 

 0.442

 

 (0.079)

 

 -1.801

 

 (0.69)

 

 0.151

 

 (0.12)

 

 0.913

 

 (1.09)

 

 0.699

 

 (0.23)

 

 -0.763

 

 (0.90)

 
Loam

 

 242

 

 0.061

 

 (0.073)

 

 0.399

 

 (0.098)

 

 -1.954

 

 (0.73)

 

 0.168

 

 (0.13)

 

 1.081

 

 (0.92)

 

 0.568

 

 (0.21)

 

 -0.371

 

 (0.84)

 
L Sand

 

 201

 

 0.049

 

 (0.042)

 

 0.390

 

 (0.070)

 

 -1.459

 

 (0.47)

 

 0.242

 

 (0.16)

 

 2.022

 

 (0.64)

 

 1.386

 

 (0.24)

 

 -0.874

 

 (0.59)

 
Sand

 

 308

 

 0.053

 

 (0.029)

 

 0.375

 

 (0.055)

 

 -1.453

 

 (0.25)

 

 0.502

 

 (0.18)

 

 2.808

 

 (0.59)

 

 1.389

 

 (0.24)

 

 -0.930

 

 (0.49)

 
S Clay

 

 11

 

 0.117

 

 (0.114)

 

 0.385

 

 (0.046)

 

 -1.476

 

 (0.57)

 

 0.082

 

 (0.06)

 

 1.055

 

 (0.89)

 

 0.637

 

 (0.34)

 

 -3.665

 

 (1.80)

 
S C L

 

 87

 

 0.063

 

 (0.078)

 

 0.384

 

 (0.061)

 

 -1.676

 

 (0.71)

 

 0.124

 

 (0.12)

 

 1.120

 

 (0.85)

 

 0.841

 

 (0.24)

 

 -1.280

 

 (0.99)

 
S loam

 

 476

 

 0.039

 

 (0.054)

 

 0.387

 

 (0.085)

 

 -1.574

 

 (0.56)

 

 0.161

 

 (0.11)

 

 1.583

 

 (0.66)

 

 1.190

 

 (0.21)

 

 -0.861

 

 (0.73)

 
Silt

 

 6

 

 0.050

 

 (0.041)

 

 0.489

 

 (0.078)

 

 -2.182

 

 (0.30)

 

 0.225

 

 (0.13)

 

 1.641

 

 (0.27)

 

 0.524

 

 (0.32)

 

 0.624

 

 (1.57)

 
Si Clay

 

 28

 

 0.111

 

 (0.119)

 

 0.481

 

 (0.080)

 

 -1.790

 

 (0.64)

 

 0.121

 

 (0.10)

 

 0.983

 

 (0.57)

 

 0.501

 

 (0.27)

 

 -1.287

 

 (1.23)

 
Si C L

 

 172

 

 0.090

 

 (0.082)

 

 0.482

 

 (0.086)

 

 -2.076

 

 (0.59)

 

 0.182

 

 (0.13)

 

 1.046

 

 (0.76)

 

 0.349

 

 (0.26)

 

 -0.156

 

 (1.23)

 
Si Loam

 

 330

 

 0.065

 

 (0.073)

 

 0.439

 

 (0.093)

 

 -2.296

 

 (0.57)

 

 0.221

 

 (0.14)

 

 1.261

 

 (0.74)

 

 0.243

 

 (0.26)

 

 0.365

 

 (1.42)