Simulation of macrodispersion and natural attenuation (MADE and
NATS) tests at the Columbus Air Force Base in Mississippi
This study is related to the large-scale natural-gradient macrodispersion and natural
attenuation (MADE and NATS) tests conducted at the Columbus Air Force Base in Mississippi.
The primary objectives of this study include 1) providing independent estimates of
macrodispersivities (for the advection-dispersion model) and of mass transfer rates (for
the mobile-immobile dual-domain model) for comparison with those estimated from spatial
moments analysis and stochastic theories; 2) developing a three-dimensional field-scale
benchmark problem for testing numerical codes and alternative transport theories; 3)
understanding the role of aquifer heterogeneity in controlling contaminant fate and
transport; and 4) evaluating the effectiveness of various geostatistical approaches for
constructing the hydraulic conductivity distribution from field data.
- Zheng, C., and S.M. Gorelick, 2001, Effect of decimeter-scale preferential
flow paths on solute transport: implications for groundwater remediation, In
Proc. Groundwater Quality 2001 International Conference, Sheffield, UK.
- Julian, H.E., J.M. Boggs, C. Zheng, and C.E. Feehley, 2001, Numerical
simulation of a natural gradient tracer experiment for the Natural Attenuation
Study: flow and physical transport, Ground Water, 39(4), 534-545.
- Feehley C.E., C.
Zheng, and F.J. Molz, 2000, A dual-domain mass transfer approach for modeling
solute transport in heterogeneous porous media, application to the MADE site,
Water Resources Research,
- Zheng, C. and J.J. Jiao, 1998, Numerical simulation of tracer tests in a heterogeneous
aquifer, Journal of Environmental Engineering, 124(6),
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