Comparison of Two Ensemble-Kalman Filter Based Methods for Estimating Aquifer Parameters from Real 3-D Hydraulic and Tracer Tomographic Tests

摘要: Pumping and tracer tests are site-investigation techniques frequently used to determine hydraulic conductivity. Tomographic test layouts, in which multiple with different combinations of injection observation wells performed, gain a better insight into spatial variability. While tomography has repeatedly been applied the field, lags behind. In previous publication, we presented synthetic study investigate whether ensemble Kalman Filter (EnKF) or Ensemble Generator (KEG) performs inverting hydraulic- tracer-tomographic data. this work, develop an experimental method for solute-tracer using fluorescein as conservative tracer. We performed at Lauswiesen site Germany. analyzed transient drawdown concentration data EnKF steady-state heads mean arrival times KEG, obtaining more stable results KEG lower computational costs. The distribution estimated conductivity field agreed earlier descriptions aquifer site. This narrows gap between numerical studies applications characterization high resolution, showing potential combining ensemble-Kalman filter based methods collected from tomographic experiments.