کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4526644 1323851 2008 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adaptive multi-scale parameterization for one-dimensional flow in unsaturated porous media
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Adaptive multi-scale parameterization for one-dimensional flow in unsaturated porous media
چکیده انگلیسی

In the analysis of the unsaturated zone, one of the most challenging problems is to use inverse theory in the search for an optimal parameterization of the porous media. Adaptative multi-scale parameterization consists in solving the problem through successive approximations by refining the parameter at the next finer scale all over the domain and stopping the process when the refinement does not induce significant decrease of the objective function any more. In this context, the refinement indicators algorithm provides an adaptive parameterization technique that opens the degrees of freedom in an iterative way driven at first order by the model to locate the discontinuities of the sought parameters. We present a refinement indicators algorithm for adaptive multi-scale parameterization that is applicable to the estimation of multi-dimensional hydraulic parameters in unsaturated soil water flow. Numerical examples are presented which show the efficiency of the algorithm in case of noisy data and missing data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Water Resources - Volume 31, Issue 1, January 2008, Pages 28–43
نویسندگان
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