When Steady-State Is Not Enough
Steady-state piezometric head data have always been regarded as containing only information about the major patterns of variability of hydraulic conductivity, but not about specific features, such as channels, or local scale heterogeneity. We have attempted to characterize a channeled aquifer using only steady-state piezometric head without success. However, in a companion paper, we demonstrate how transient piezometric head data can be used to characterize a bimodal aquifer for which no prior information on the aquifer spatial heterogeneity is available using a localized version of the normal-score ensemble Kalman filter.
KeywordsHydraulic Conductivity Piezometric Head Ensemble Variance Hydraulic Conductivity Field Assimilation Step
- 1.Xu, T., Jaime Gómez-Hernández, J., Zhou, H., & Li, L. (2013). The power of transient piezometric head data in inverse modeling: an application of the localized normal-score enkf with covariance inflation in a heterogenous bimodal hydraulic conductivity field. Advances in Water Resources, 54, 100–118.CrossRefGoogle Scholar
- 3.McDonald, M., & Harbaugh, A. (1984). A modular three-dimensional finite-difference ground-water flow model. Washington: Scientific Publications Company.Google Scholar
- 4.Harbaugh, A., et al.(2000). MODFLOW-2000, the US Geological Survey modular ground-water model: user guide to modularization concepts and the ground-water flow process. US Geological Survey.Google Scholar