SEARCH Articles Figures Tables Aquifer Effect of Screening and Pumping Rate on Measured Concentrations in a Heterogeneous Aquifer Estimate of Microbial Metabolism Rates in Deep Aquifers Monitoring of Natural Attenuation in a Heterogeneous Aquifer Noble Gases in Aquifer System Rainwater infiltration in an aquifer Silica transport in an aquifer Zoning in an aquifer