Figure captions
Figure 1. Location of soil sample sites across the inland Pacific Northwest (iPNW).
Figure 2. The typical force (N) versus displacement (mm) curves during crushing of aggregates with 4% and 8% clay amendment for four soil types.
Figure 3. A flow diagram of the wind tunnel study in evaluating the effect of progressive clay amendment on soil wind erosion in the inland Pacific Northwest.
Figure 4. Soil loss simulated by the RWEQ model as a function of clay amendment at 12 m s-1 freestream wind speed within a dry and loose soil surface for four soil types found across inland Pacific Northwest.
Figure 5. Crust crushing energy (a) and their rates (b) as a function of clay amendment for four soil types found across inland Pacific Northwest (iPNW).
Figure 6. Soil water content (a), random roughness (b), and aggregate density (c) as a function of crust crushing energy for four soil types found across inland Pacific Northwest (iPNW). The p value >0.1 indicated the relationship was not statistically significant (10% level).
Figure 7. Aggregate GMD as a function of crust crushing energy (a) when crust break down by tillage, and soil loss as a function of aggregate GMD (b) for four soil types found across inland Pacific Northwest (iPNW).
Figure 8. Soil loss as a function of clay amendment for four soil types found across inland Pacific Northwest (iPNW).
Figure 9. The abrasion coefficient of aggregates (a) and vertical abrasion flux (b) simulated by SWEEP as a function of aggregate crushing energy for the four soil types found across inland Pacific Northwest (iPNW).
Figure 10. The abrasion coefficient of aggregates (a) and vertical abrasion flux (b) simulated by SWEEP as a function of clay amendment for the four soil types found across inland Pacific Northwest (iPNW).