Improvement of the physically-based groundwater model simulations through complementary correction of its errors
Physically-Based groundwater Models (PBM), such MODFLOW, are used as groundwater resources evaluation tools supposing that the produced differences (residuals or errors) are white noise. However, in the facts these numerical simulations usually show not only random errors but also systematic errors....
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| Format: | Article |
| Language: | Spanish |
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Universitat Politècnica de València
2017-04-01
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| Series: | Ingeniería del Agua |
| Subjects: | |
| Online Access: | https://polipapers.upv.es/index.php/IA/article/view/7066 |
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| Summary: | Physically-Based groundwater Models (PBM), such MODFLOW, are used as groundwater resources evaluation tools supposing that the produced differences (residuals or errors) are white noise. However, in the facts these numerical simulations usually show not only random errors but also systematic errors. For this work it has been developed a numerical procedure to deal with PBM systematic errors, studying its structure in order to model its behavior and correct the results by external and complementary means, trough a framework called Complementary Correction Model (CCM). The application of CCM to PBM shows a decrease in local biases, better distribution of errors and reductions in its temporal and spatial correlations, with 73% of reduction in global RMSN over an original PBM. This methodology seems an interesting chance to update a PBM avoiding the work and costs of interfere its internal structure. |
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| ISSN: | 1134-2196 1886-4996 |