Abstract
This paper investigates the applicability of geostatistical models of hydraulic conductivity. The model studied herein are statistical properties of exponential model, autoregressive model, and power model in addition to 1/f model which authors have proposed. The results show that the variance is not uniquely determined in the former three models because the change of the variance depends on the domain size in both exponential model and autoregressive model and depends on the resolution in power model. On the other hand, in 1/f model, the variance is uniquely determined regardless of the domain size and the resolution. Moreover, the 1/f model can reproduce well the observed variogram.
