Untangling Diffusion from Advection in Unsaturated Porous Media: Experimental Data, Modeling, and Parameter Uncertainty Stauffer, Philip H. ; Vrugt, Jasper A. ; Turin, H. Jake ; Gable, Carl W. ; Soll, Wendy E. Abstract Publication: Vadose Zone Journal Pub Date: May 2009 DOI: 10.2136/vzj2008.0055 Bibcode: 2009VZJ.....8..510S