Stochastic Porous Media and Hydrology

Stochastic porous media arise naturally in many situations; the common feature is a spatial statistical process of extended objects, such as voids distributed in a solid or a connected matrix of distributed solids in air. We have modelled real examples above of cosmological voids among stochastic galactic clusters and at the other extreme of scale are the inter-fibre voids in stochastic fibrous networks. The main context in the present chapter is that of voids in agricultural soils.