Geological media exhibit heterogeneities in their hydraulic and chemical properties, which
can lead to enhanced spreading and mixing of the transported species and induce an …

This review provides an overview of concepts and approaches for the quantification of
passive, non-reactive solute mixing in steady uniform porous media flows across scales …

People in cities use elevators daily. With the COVID-19 pandemic, there are more worries
about elevator safety, since elevators are often small and crowded. This study used a proven …

Abstract The ensemble Kalman filter (EnKF) is a commonly used real-time data assimilation
algorithm in various disciplines. Here, the EnKF is applied, in a hydrogeological context, to …

Proliferation of microplastics in rivers, lakes, estuaries, coastal waters and oceans is a major
global challenge and threat to the environment, livelihoods and human health. Reliable …

Random walk (RW) methods are recurring Monte Carlo methods used to model convective
and diffusive transport in complex heterogeneous media. Many applications can be found …

Hydrologic connectivity among wetlands is poorly characterized and understood. Our
inability to quantify this connectivity compromises our understanding of the potential impacts …

We investigate the temporal scaling properties of mixing in heterogeneous permeability
fields with variances ranging from very small (σlnK2= 0.01) to very large (σlnK2= 9). We …

Shales will play an important role in the successful transition of energy from fossil-based
resources to renewables in the coming decades. Aside from being a significant source of …

We extend the particle-tracking method to simulate general multi-rate mass transfer (MRMT)
equations. Previous methods for single-rate equations used two-state Markov chains and …