HR: 0800h
AN: H21E-1063    [Abstracts]
TI: Wavelet Analysis of Permeability Anisotropy of Massillon Sandstone
AU: * Neupauer, R M
EM: rneupauer@virginia.edu
AF: University of Virginia, P.O. Box 400742, Charlottesville, VA 22904-4742 United States
AU: Powell, K L
EM: kpowell@escva.com
AF: Environmental Stretegies Consulting LLC, 11911 Freedom Drive, Suite 900, Reston, VA 20190
AB: An accurate representation of the permeability anisotropy of a porous medium is needed to successfully predict the magnitude and direction of groundwater flow. We use wavelet analysis to identify principal directions of anisotropy in a heterogeneous porous medium. Wavelet analysis involves the integral transform of a permeability field using a kernel function (wavelet) that can be shifted, stretched, and rotated. The magnitude of the resulting wavelet coefficient provides information about the dominant scales (via stretching) and dominant orientations (via rotation) at various spatial positions in the permeability field. We use a fully-anisotropic Morlet wavelet to successfully identify dominant scales and orientations of a 1m x 1m face of Massillon sandstone. In addition, we demonstrate that wavelet analysis can identify localized features that are not identifiable through geostatistical analysis.
DE: 1829 Groundwater hydrology
SC: Hydrology [H]
MN: 2004 AGU Fall Meeting