Water percolation through the deep vadose zone and groundwater recharge: Preliminary results based on a new vadose zone monitoring system

Biodegradation in the Vadose Zone

Using Pedotransfer Functions in Vadose Zone Models for Estimating Groundwater Recharge in Semiarid Regions

Colloid-facilitated Transport of Radionuclides through the Vadose Zone

Research Objectives: This project seeks to improve the basic understanding of colloid and colloid-facilitated transport of Cs in the vadose zone. The specific objectives are: • Determine the structure, composition, and surface charge characteristics of colloidal particles formed under conditions similar to those occurring during leakage of waste typical of Hanford tank supernatants into soils a...

Simulation of Water and Contaminant Transport Through Vadose Zone - Redistribution System

Numerical analysis of ̄ow and transport in a combined heterogeneous vadose zone±groundwater system

Numerical simulations of water ̄ow and solute transport were used to investigate the e€ect of the recharge (rain/irrigation) at the soil surface on solute spreading and breakthrough in a realistic, three-dimensional, heterogeneous, vadose zone±groundwater ̄ow system. Results of the analyses suggest that smaller recharge at the soil surface increases the relative variability in the response of t...