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Characterization of Particle-Size Distribution in Soils with a Fragmentation Model

^a Department of Crop and Soil Sciences, Washington State University, Pullman, WA 99164 USA

View larger version (29K): [in a new window]   Fig. 1 Cumulative particle-size distributions for four soils obtained by two different experimental methods

View larger version (32K): [in a new window]   Fig. 2 Log-log plots of particle-size distributions for four soil samples. Symbols denote experimental data, solid lines denote model fits

View larger version (24K): [in a new window]   Fig. 3 Fragmentation fractal dimensions D and probabilities p of fragmentation. The solid line represents Eq. [8], symbols are calculated with Eq. [8] from experimentally determined fractal dimensions

View larger version (21K): [in a new window]   Fig. 4 Fragmentation fractal dimension of the silt domain Dsilt vs. clay and sand percentage. Data from Tyler and Wheatcraft (1992) were obtained from the entire range of the particle-size distribution used in their study

View larger version (20K): [in a new window]   Fig. 5 Experimental and calculated values of median diameter d50 and of fragmentation fractal dimension of the silt domain Dsilt for all 19 soils used in this study. Calculated values are from Eq. [9] and [10]. RMSE is the root mean square error