Complex sentence: Random fields are of great use in studying natural processes by the Monte Carlo method, in which the random fields correspond to naturally spatially varying properties, such as soil permeability over the scale of meters, or concrete strength on the scale of centimeters.
Split into simpler sentences: Random fields are of great use in studying natural processes by the monte carlo method. In which the random fields are used as alagories of natural spatially varying properties, such as soil permeability over the scale of meters, or concrete strength on the scale of centimeters.