Tortuosity is widely used as a critical parameter to predict transport properties of porous
media, such as rocks and soils. But unlike other standard microstructural properties, the …

An authoritative reference on soil physics, Soil Physics Companion is lavishly illustrated with
graphs, charts, line drawings, and equations. The book provides a valuable source of …

Natural source zone depletion (NSZD) is an emerging technique for sustainable and cost-
effective bioremediation of light non-aqueous phase liquid (LNAPL) in oil spill sites …

As the barometer falls, gases are drawn upward out of the permeable Earth into the
atmosphere. Conversely, a rising barometer pushes air downward. In a homogeneous …

Single-phase fluid flow in porous media is usually direction dependent owing to the
tortuosity associated with the internal structures of materials that exhibit inherent anisotropy …

Gas movement through soils is important for ecosystems and engineering in many ways
such as for microbial and plant respiration, passive methane oxidation in landfill covers and …

Carbon dioxide concentrations were measured at various depths and times in the
unsaturated zones of two hydraulically and geochemically contrasting field sites, one in …

Modeling the gas exchange flux between soil and the atmosphere, risk assessment, and the
evaluation of remediation strategies at contaminated sites require the knowledge of gas …

Analysis of volatile organic gases in the soil near un-derground contaminant plumes has
become a popular field method to quickly assess the extent of subsurface pollution …

A new method and instrument were developed for in situ measurement of the gas diffusion
coefficient (D g) and gas coefficient of permeability (kg) of unsaturated soil. Air containing …