UNSODA
|
Category | Hydraulic properties |
Publisher | US Environmental Protection Agency |
Platform | DOS |
Status | Public domain |
Description | UNSODA is a database of unsaturated soil hydraulic properties (water retention, hydraulic conductivity, and soil water diffusivity), basic soil properties (particle-size distribution, bulk density, and organic matter content), and additional information regarding the soil and experimental procedures. The program can be used to: (1) store and edit data, (2) search for data sets based on user-defined query specifications, (3) write the contents of selected data sets to an output device, and (4) describe the unsaturated hydraulic data with closed-form analytical expressions. The unsaturated hydraulic functions are key input data in numerical models of vadose zone processes. These functions may be either measured directly, estimated indirectly through prediction from more easily measured data based upon quasi-emperical models, or approximated by using hydraulic data from similar soils. It serves as a repository of data sets that can be used as a source of surrogate hydraulic data, or for the development and evaluation of indirect methods for estimating the unsaturated hydraulic properties. Three examples are provided to show the reader step-by-step instructions on how to use the program. |
Cost | Free on WWW |
Data formats supported | None stated |
Supplier in United States of America | US Environmental Protection Agency |
Supplier in United States of America | USDA Salinity Laboratory |
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