Fig. 6. The reflection coefficient, {sigma}, of AWy as a function of the normalized mobile water layer, {kappa}0dl, according to Bolt. The curves were calculated using Eq. [8]. In the inset the curves for all the samples are shown between 5 <= {kappa}0dl <= 10. As the value of {kappa}0{delta} for the samples are of the same order of magnitude—0.02 for AWy, 0.04 for BK and 0.06 for BMR—the curves plot close to each other.