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Parameterizing Flow and Transport Models for Field-scale Applications in Heterogeneous, Unsaturated Soils by Mark L. Rockhold is a book available to read on EtoBox.

What is Parameterizing Flow and Transport Models for Field-scale Applications in Heterogeneous, Unsaturated Soils about?

Most of the uncertainty associated with modeling water flow and solute transport in unsaturated soils at the field scale can usually be attributed to the natural heterogeneity or spatial variability of soils. Soil hydraulic properties are difficult and expensive to measure accurately over the wide range of conditions that occur in the field, and their spatial variability is generally not characterized adequately by the few sparse measurements that are typically available. Methods are needed for estimating soil hydraulic properties at unsampled locations from sparse and/or surrogate data, and for upscaling these estimates to determine spatially distributed or effective model parameters. A simple approach is described for estimating soil hydraulic parameters for field-scale model applications. This approach utilizes geostatistical methods, similar media scaling, and conditional simulation to estimate soil hydraulic parameters at unsampled locations from field-measured water content data and a set of scale-mean hydraulic parameters. An algorithm for upscaling point estimates of soil hydraulic parameters to the size of the grid blocks required for numerical modeling is also described.

Author

Mark L. Rockhold

Publisher

American Geophysical Union

Published

1999

Language

EN