HR: 0830h
AN: H21D-0882    [PDF]
TI: Wavelet Analysis of Permeability Anisotropy
AU: * Powell, K L
EM: klp3v@virginia.edu
AF: University of Virginia, Department of Civil Engineering PO Box 400742, 351 McCormick Rd, Thornton Hall, D219, Charlottesville, VA 22904-4742
AU: Neupauer, R M
EM: rmn7b@virginia.edu
AF: University of Virginia, Department of Civil Engineering PO Box 400742, 351 McCormick Rd, Thornton Hall, D219, Charlottesville, VA 22904-4742
AB: Since the permeability of porous media is anisotropic, an accurate representation of anisotropy is needed in order to reliably predict the movement of fluids and contaminants in the subsurface. We use wavelet analysis to identify principal axes of anisotropy in a porous medium and to identify the boundaries between regions with different principal axes. Wavelet analysis uses an integral transform that extracts local information at multiple scales and orientations. We have tested the technique on hypothetical two-dimensional permeability fields, and we have conducted a preliminary evaluation of the technique using laboratory-measured permeability data from a block of Massillon sandstone. We demonstrate the wavelet analysis technique for identifying principal axes of anisotropy, and we evaluate the effects of sparse data on the results.
DE: 1829 Groundwater hydrology
DE: 1832 Groundwater transport
SC: Hydrology [H]
MN: 2003 Fall Meeting