Evidence of Preferential Flow Activation in the Vadose Zone via Geophysical Monitoring

Preferential Flow and Transport of Cryptosporidium parvum Oocysts through the Vadose Zone: Experiments and Modeling

in the form of 4to 6m-long ovoid-shaped oocysts, with a double wall that is resistant to most oxidation As a result of Cryptosporidium parvum in drinking water, several processes such as ozonation and chlorination (Current, outbreaks of cryptosporidiosis have occurred in the last 10 yr. Al1986; Atwill et al., 1997). though it is generally believed that movement of pathogens through the soil is ...

A Resolution Analysis of Two Geophysical Imaging Methods for Characterizing and Monitoring Hydrologic Conditions in the Vadose Zone

RESEARCH OBJECTIVE The objective of this study is to to characterize and analyze in-situ flow and transport within the vadose zone during a mid-scale hydrologic infiltration experiment. This project has employed numerical and experimental tools developed under a previously funded EMSP proposal (project number 55332) to provide 3-D unsaturated hydrologic property distributions. In the present pr...

Biodegradation in the Vadose Zone

Multi-method geophysical measurements for soil science investigations in the vadose zone

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract We studied the changes of geophysical parameters on a ...

the effects of changing roughness on the flow structure in the bends

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...