Identifying short-range and long-range structural components of a compacted soil: An integrated geostatistical and spectral approach
Research output: Contribution to journal › Article
Spectral analysis of geostatistical data has revealed the pore space of a compacted soil does not contain any specific structural component (laminations). Spectral analysis (using a discrete Fourier transform) of experimental variogram values revealed that a number of possible periodic components (laminations) did exist for individual vertical colour profiles (taken from images of the pore space captured using a scanning electron microscope). However, the periodicity varied laterally. The degree of lateral variation was found to depend on pore size. This suggests that the petrographic textures associated with compaction are not dominated by a small number of specific structural periodicities but a large number of localised structures. The analysis was carried out using a purpose built program called Specprofile.
- Fourier transform, Lamination, Spatial frequency, Spectral profile, Variogram