Representation of Soil Aggregate‐Size Distribution by a Logarithmic‐Normal Distribution

Abstract

Abstract The need for a simple method of representing a soil aggregatesize distribution is well recognized. Over 200 aggregate‐size distributions which have appeared in the soils literature were examined to determine if they could be fitted by an analytical expression. A majority of these distributions was found to be logarithmic‐normal or very nearly so. Such distributions can be completely characterized by specifying the geometric mean diameter and standard deviation. The logarithmic‐normal distribution function and its application to aggregate‐size distributions are discussed. An illustrative example is given.