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Detailed Reference Information |
Hyun, Y., Neuman, S.P., Vesselinov, V.V., Illman, W.A., Tartakovsky, D.M. and Di Federico, V. (2002). Theoretical interpretation of a pronounced permeability scale effect in unsaturated fractured tuff. Water Resources Research 38: doi: 10.1029/2001WR000658. issn: 0043-1397. |
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Numerous single-hole and cross-hole pneumatic injection tests have been conducted in unsaturated fractured tuff at the Apache Leap Research Site (ALRS) near Superior, Arizona. Single-hole tests have yielded values of air permeability at various locations throughout the tested rock volume on a nominal scale of ~1 m. Cross-hole tests have yielded equivalent air permeabilities (and air-filled porosities) for a rock volume characterized by a length scale of several tens of meters. Cross-hole tests have also provided high-resolution tomographic estimates of how air permeability (and air-filled porosity), defined over grid blocks having a length scale of 1 m, vary throughout a similar rock volume. The results have revealed a highly pronounced scale effect in permeability (and porosity) at the ALRS. We examine the extent to which the permeability scale effect is amenable to interpretation by a recent stochastic scaling theory, which treats the rock as a truncated random fractal. |
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Abstract |
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Keywords
Hydrology, Stochastic processes, Hydrology, Unsaturated zone, Mathematical Geophysics, Inverse theory, Mathematical Geophysics, Fractals and multifractals |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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