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Soil deformation and its spectral signature |
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| Authors: | Robert R Wells S N Prasad M J M Römkens |
| Institution: | 1. Watershed Physical Processes Research Unit, USDA‐ARS National Sedimentation Laboratory, Oxford, MS, USA;2. Department of Civil Engineering, University of Mississippi, University, MS, USA;3. USDA‐ARS National Sedimentation Laboratory, Oxford, MS, USA |
| Abstract: | Spatial variation of the surface micro‐relief in a Sharkey clay soil was investigated. The micro‐relief measurements of the soil surface were obtained using an automated infrared laser system and evaluated with methods of Fourier analysis. The authors illustrate the spectral technique with a simple example and then use the technique to interpret the surface micro‐relief patterns of soil samples subjected to three simulated rainstorm intensities. The periodicity of the soil surface micro‐relief in the longitudinal direction was 80–120 mm. The periodic surface micro‐relief patterns immediately following the rainstorm are shown to be an early manifestation of the cracking pattern. Published in 2006 by John Wiley & Sons, Ltd. |
| Keywords: | Spectral analysis soil cracking spatial variation surface microtopography |