Hierarchical, Bimodal Model for Gas Diffusivity in Aggregated, Unsaturated Soils

The soil gas diffusion coefficient (Dp) and its dependency on soil air content, epsilon, and tortuosity–connectivity of the air-filled pore networks control the transport and fate of gaseous-phase contaminants in variably saturated soil. The bimodality in pore size distribution of structured soil of...

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Veröffentlicht in:	Soil Science Society of America journal 2010-03, Vol.74 (2), p.481-491
Hauptverfasser:	Resurreccion, Augustus C, Moldrup, Per, Kawamoto, Ken, Hamamoto, Shoichiro, Rolstone, Dennis E, Komatsu, Toshiko
Format:	Artikel
Sprache:	eng
Schlagworte:	accuracy Agronomy. Soil science and plant productions Biological and medical sciences Contaminants Diffusion coefficient diffusivity Earth sciences Earth, ocean, space equations Exact sciences and technology Fundamental and applied biological sciences. Psychology Loam soils mathematical models Organic chemicals Pore size saturated conditions Saturated soils soil aggregates soil air Soil gases soil pollution soil pore system Soil science soil structure soil transport processes soil water content Soils spatial variation Studies Surficial geology unsaturated conditions
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