Prediction of local concentration statistics in variably saturated soils: influence of observation scale and comparison with field data

摘要

The methodology developed in Destouni and Graham{Destouni, G., Graham, W.D., 1997. The influence of observation method on local concentration statistics in the subsurface. Water Resour. Res. 33(4)663-676.]for predicting locally measured concentration statistics for solute transport In heterogeneous porous media under saturated flow conditions is applied to the prediction of Conservative nonreactive solute transport in the vadose zone where observations are obtained by Soil coring. Exact analytical solutions are developed for the both the mean and variance of solute Concentrations measured in discrete soil cores using a simplified physical model for vadose-zone Flow and solute transport.