Application of digital profile modeling techniques to ground-water solute transport at Barstow, California

摘要: This study investigated the use of a two-dimensional profile-oriented waterquality model for simulation head and water-quality changes through saturated thickness an aquifer. The profile is able to simulate confined or unconfined aquifers with nonhomogeneous anisotropic hydraulic conductivity, specific storage porosity, nonuniform thickness. An aquifer may be simulated under either steady nonsteady flow conditions provided that ground-water path along which longitudinal axis oriented does not move in during time period. parameters are more difficult quantify than corresponding areal-oriented model. However, sensitivity such normal error parameter estimation will preclude obtaining acceptable results. Although has advantage being vertical singleor multiple-aquifer system, types problems it can applied limited by requirements (1) remain (2) any subsequent hydrologic factors evaluated using must located land-surface trace Simulation hypothetical management practices indicates applicable problem-oriented studies provide quantitative results variety practices. In particular, simulations movement dissolved-solids concentration zone degraded quality near Barstow, Calif., indicate halting subsurface disposal treated sewage effluent conjunction pumping line fully penetrating wells would effective means controlling ground water.