Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua
This paper presents a numerical modelling framework developed to simulate circulations and to generally characterise the hydrodynamics of the Superior Lake of Mantua, a shallow fluvial lake in Northern Italy. Such eutrophied basin is characterised by low winds, reduced discharges during the summer a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2016-04-01
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| Series: | Journal of Limnology |
| Subjects: | |
| Online Access: | http://www.jlimnol.it/index.php/jlimnol/article/view/1378 |
| _version_ | 1818966847630868480 |
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| author | Andrea Fenocchi Stefano Sibilla |
| author_facet | Andrea Fenocchi Stefano Sibilla |
| author_sort | Andrea Fenocchi |
| collection | DOAJ |
| description | This paper presents a numerical modelling framework developed to simulate circulations and to generally characterise the hydrodynamics of the Superior Lake of Mantua, a shallow fluvial lake in Northern Italy. Such eutrophied basin is characterised by low winds, reduced discharges during the summer and by the presence of large lotus flower (<em>Nelumbo</em> <em>nucifera</em>) meadows, all contributing to water stagnation. A hydrodynamic numerical model was built to understand how physical drivers shape basic circulation dynamics, selecting appropriate methodologies for the lake. These include a 3D code to reproduce the interaction between wind and through-flowing current, a fetch-dependent wind stress model, a porous media approach for canopy flow resistance and the consideration of wave-current interaction. The model allowed to estimate the circulation modes and water residence time distributions under identified typical ordinary, storm and drought conditions, the hydrodynamic influence of the newly-opened secondary outlet of the lake, the surface wave parameters, their influence on circulations and the bottom stress they originate, and the adaptation time scales of circulations to storm events. Some probable effects of the obtained hydrodynamic characteristics of the Superior Lake of Mantua on its biochemical processes are also introduced. |
| first_indexed | 2024-12-20T13:39:24Z |
| format | Article |
| id | doaj.art-c2e395eba7dc49f18ec6ae6bb0ddeb9b |
| institution | Directory Open Access Journal |
| issn | 1129-5767 1723-8633 |
| language | English |
| last_indexed | 2024-12-20T13:39:24Z |
| publishDate | 2016-04-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Limnology |
| spelling | doaj.art-c2e395eba7dc49f18ec6ae6bb0ddeb9b2022-12-21T19:38:50ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86332016-04-0175310.4081/jlimnol.2016.1378835Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of MantuaAndrea Fenocchi0Stefano Sibilla1University of PaviaUniversity of PaviaThis paper presents a numerical modelling framework developed to simulate circulations and to generally characterise the hydrodynamics of the Superior Lake of Mantua, a shallow fluvial lake in Northern Italy. Such eutrophied basin is characterised by low winds, reduced discharges during the summer and by the presence of large lotus flower (<em>Nelumbo</em> <em>nucifera</em>) meadows, all contributing to water stagnation. A hydrodynamic numerical model was built to understand how physical drivers shape basic circulation dynamics, selecting appropriate methodologies for the lake. These include a 3D code to reproduce the interaction between wind and through-flowing current, a fetch-dependent wind stress model, a porous media approach for canopy flow resistance and the consideration of wave-current interaction. The model allowed to estimate the circulation modes and water residence time distributions under identified typical ordinary, storm and drought conditions, the hydrodynamic influence of the newly-opened secondary outlet of the lake, the surface wave parameters, their influence on circulations and the bottom stress they originate, and the adaptation time scales of circulations to storm events. Some probable effects of the obtained hydrodynamic characteristics of the Superior Lake of Mantua on its biochemical processes are also introduced.http://www.jlimnol.it/index.php/jlimnol/article/view/1378Shallow fluvial lakeslake hydrodynamicsnumerical modelingwind stressvegetation resistancelake circulations. |
| spellingShingle | Andrea Fenocchi Stefano Sibilla Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua Journal of Limnology Shallow fluvial lakes lake hydrodynamics numerical modeling wind stress vegetation resistance lake circulations. |
| title | Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua |
| title_full | Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua |
| title_fullStr | Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua |
| title_full_unstemmed | Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua |
| title_short | Hydrodynamic modelling and characterisation of a shallow fluvial lake: a study on the Superior Lake of Mantua |
| title_sort | hydrodynamic modelling and characterisation of a shallow fluvial lake a study on the superior lake of mantua |
| topic | Shallow fluvial lakes lake hydrodynamics numerical modeling wind stress vegetation resistance lake circulations. |
| url | http://www.jlimnol.it/index.php/jlimnol/article/view/1378 |
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