Untangling Diffusion from Advection in Unsaturated Porous Media: Experimental Data, Modeling, and Parameter Uncertainty

@article{Stauffer2009UntanglingDF,
  title={Untangling Diffusion from Advection in Unsaturated Porous Media: Experimental Data, Modeling, and Parameter Uncertainty},
  author={Philip H. Stauffer and Jasper A. Vrugt and H. J. Turin and Carl W. Gable and Wendy E. Soll},
  journal={Vadose Zone Journal},
  year={2009},
  volume={8},
  pages={510 - 522}
}
We conducted a series of experimental and modeling tests using data from the Busted Butte Unsaturated Zone Transport Test. First, we conducted a suite of reactive (e.g., Li), nonreactive (Br), and colloidal tracer experiments. These tracers were injected for 190 d from two point sources at rates of 1 and 8 mL/h, respectively. We then used a numerical simulator (FEHM), populated with laboratory‐measured hydrologic properties, to verify that our conceptual model of the tracer test yielded a good… 

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