کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4379363 1617570 2006 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optimal estimation of parameters for a estuarine eutrophication model
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Optimal estimation of parameters for a estuarine eutrophication model
چکیده انگلیسی
The problem of eutrophication model calibration is formulated as a coupled, multi-objective optimization. An optimal algorithm is integrated into a vertically averaged, two-dimensional eutrophication model for the model calibration. The sensitivity coefficient matrix is used to estimate the Hessian matrix. The modified Gauss-Newton method is used to estimate the unknown parameters. The approach is straightforward and requires less effort in code modification for an existing model. A series of model experiments with a real-time eutrophication model of the tidal Rappahannock River estuary is conducted. Thirteen unknown kinetic parameters are estimated with hypothetical observations generated by the model using 'true' model parameters. Model experiments are conducted using both observations with and without observation errors. The experiments demonstrate the efficiency and accuracy of the optimal methods and suggest that the method is feasible for estimating eutrophication model parameters within acceptable error ranges.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Modelling - Volume 191, Issues 3–4, 5 February 2006, Pages 521-537
نویسندگان
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