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http://117.252.14.250:8080/jspui/handle/123456789/4762| Title: | 17-Determination of Unsaturated Soil Parameters from Infiltration Experiment Using Inverse Procedure. |
| Authors: | Chandramouli, P. N. Hariprasad, K. S. Ojha, C. S. P. Gopal, Talari Venkata |
| Keywords: | Infiltration Evapotranspiration Unsaturated Zone Parameter Estimation Objective Function Inverse Modeling Richard's Equation Levenberg Marquardt Method |
| Issue Date: | 2009 |
| Publisher: | Allied Publishers Pvt. Ltd., New Delhi |
| Abstract: | The inverse problem of determining unsaturated soil hydraulic properties from one-dimensional, transient infiltration event is analyzed. Hydraulic properties are assumed to be described by Van Genucheten's (1980) model. Unknown parameters in the model are estimated from observed infiltration rates during transient flow by numerical inversion of the unsaturated flow equation. The inverse problem is solved using Levenberg-Marquardt method. It is observed that, the inverse procedure estimates the unsaturated soil parameters quite accurately and the parameter estimates are comparable with the obtained by direct measurement. It is concluded that, inverse procedure can be effectively used to estimate unsaturated soil parameters from infiltration experiment. |
| URI: | http://117.252.14.250:8080/jspui/handle/123456789/4762 |
| Appears in Collections: | Proceedings of the International Conference on Water, Environment, Energy and Society (WEES-2009), 12-16 January 2009 at New Delhi, India, Vol.-1 |
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| File | Description | Size | Format | |
|---|---|---|---|---|
| 17-Determination of Unsaturated Soil Parameters from Infiltration Experiment Using Inverse Procedure..pdf | 1.36 MB | Adobe PDF | View/Open |
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