Palaeohydrogeology and Transport Parameters Derived from 4He and Cl Profiles in Aquitard Pore Waters in a Large Multilayer Aquifer System, Central Australia
Profiles of (a) chloride and (b) 4He concentrations. Circles indicate the pore water concentrations and the vertical bar represents the concentration in the aquifer, where the vertical length represents the screened interval. Error bars include total field, analytical errors, and, for 4He, the 30% degassing loss during vacuum extraction (could be as high as 50% according to difference between measured and estimated Ne concentrations). The dotted line represents steady state solute transport analytical model 1 using estimated and calculated boundary conditions from our core measurements but diffusion-only solute transport. The dashed line represents the steady state solute transport analytical model 2 using the estimated and calculated boundary conditions. The solid line represents the steady state solute transport analytical model 3 calibration of boundary conditions ( and ).