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Wavelet analysis in a structured clay soil using 2-D images
1Universidad Europea de Madrid, Villaviciosa de Odón, Madrid, 28040, Spain
2Dpto. de Señales, Sistemas y Radiocomunicación. E.T.S. Ingenieros de Telecomunicaciones, U.P.M. Ciudad Universitaria s.n. Madrid 28040, Spain
3Dept. of Soil and Crop Sciences. Texas A&M University, 2474 Tamu, College Station, TX 77843, USA
4Dpto. de Matemática Aplicada. E.T.S. Ingenieros Agrónomos, U.P.M. Ciudad Universitaria s.n. Madrid 28040, Spain
Abstract. The spatial variability of preferential pathways for water and chemical transport in a field soil, as visualized through dye infiltration experiments, was studied by applying multifractal and wavelet transform analysis (WTA). After dye infiltration into a 4 m² plot located on a Vertisol soil near College Station, Texas, horizontal planes in the subsoil were exposed at 5 cm intervals, and dye stain patterns were photographed. Box-counting methods and WTA were applied to all of the 16 digitalized high-resolution dye images and to the dye-mass image obtained merging all sections. The well-known Devil's staircase multifractal was also used to illustrate wavelet-based analysis. Our results suggest that wavelet methods can complement box-counting analysis in the context of multiscaling structure analysis.
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Citation: Piñuela, J. A., Andina, D., McInnes, K. J., and Tarquis, A. M.: Wavelet analysis in a structured clay soil using 2-D images, Nonlin. Processes Geophys., 14, 425-434, 2007. Bibtex EndNote Reference Manager
