A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal)
Shallow coastal lagoons driven by tidal processes are extremely dynamic environments prone to continuous natural and anthropogenic pressures. The hydrodynamics of these systems deeply depends on the effect of local morphology on the tidal propagation, so their permanent evolution constantly changes...
| Principais autores: | , , , , , , |
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| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
MDPI AG
2021-02-01
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| coleção: | Journal of Marine Science and Engineering |
| Assuntos: | |
| Acesso em linha: | https://www.mdpi.com/2077-1312/9/2/234 |
| _version_ | 1827588583881441280 |
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| author | João Miguel Dias Francisco Pereira Ana Picado Carina Lurdes Lopes João Pedro Pinheiro Sérgio Miguel Lopes Paulo Gabriel Pinho |
| author_facet | João Miguel Dias Francisco Pereira Ana Picado Carina Lurdes Lopes João Pedro Pinheiro Sérgio Miguel Lopes Paulo Gabriel Pinho |
| author_sort | João Miguel Dias |
| collection | DOAJ |
| description | Shallow coastal lagoons driven by tidal processes are extremely dynamic environments prone to continuous natural and anthropogenic pressures. The hydrodynamics of these systems deeply depends on the effect of local morphology on the tidal propagation, so their permanent evolution constantly changes tidal dependent processes. For this reason, the present work aims to review the main characteristics of Ria de Aveiro hydrodynamics, a shallow lagoon located at the Atlantic Coast of Portugal, evaluating its evolution over the last 30 years (between 1987 and 2020) and investigating the main morphological changes in its origin. For this purpose, a comparative analysis is performed to determine the main process, including the observed hydrodynamic changes: Deepening of the inlet channel or of the main lagoon channels. To achieve these goals, the authors explored a remarkable database including bathymetric, tide gauge, and salinity data from 1987 until the present. This analysis is completed by the exploitation of a hydrodynamical model (Delft3D), validated against field data. Several simulations were performed to analyse changes in tidal propagation along the lagoon channels (considering the main semi-diurnal constituent <i>M</i><sub>2</sub>), tidal asymmetry, tidal currents, tidal prism, and salinity patterns. The results show that the general deepening of the lagoon observed between 1987 and 2020 led to important changes in the lagoon hydrodynamics, namely the increase/decrease of the <i>M</i><sub>2</sub> constituent amplitude/phase, as well as the increase of tidal currents and salt intrusion within the entire lagoon, with the changes being amplified towards the head of the main channels. Although the inlet deepening partially contributed to the modifications found, the results revealed that the deepening of the main lagoon channels had the most significant contribution to the changes observed during the last 30 years. |
| first_indexed | 2024-03-09T00:38:28Z |
| format | Article |
| id | doaj.art-6aef83cd742e49599e11c5ad12ce6d86 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T00:38:28Z |
| publishDate | 2021-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-6aef83cd742e49599e11c5ad12ce6d862023-12-11T17:59:52ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-02-019223410.3390/jmse9020234A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal)João Miguel Dias0Francisco Pereira1Ana Picado2Carina Lurdes Lopes3João Pedro Pinheiro4Sérgio Miguel Lopes5Paulo Gabriel Pinho6Centre for Environmental and Marine Studies, Physics Department, University of Aveiro, 3810-193 Aveiro, PortugalPhysics Department, University of Aveiro, 3810-193 Aveiro, PortugalCentre for Environmental and Marine Studies, Physics Department, University of Aveiro, 3810-193 Aveiro, PortugalCentre for Environmental and Marine Studies, Physics Department, University of Aveiro, 3810-193 Aveiro, PortugalCentre for Environmental and Marine Studies, Physics Department, University of Aveiro, 3810-193 Aveiro, PortugalADAI/LAETA, Association for the Development of Industrial Aerodynamics, Rua Pedro Hispano, 12, PT-3030-289 Coimbra, PortugalCITAB—Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro, 5000-801 Vila Real, PortugalShallow coastal lagoons driven by tidal processes are extremely dynamic environments prone to continuous natural and anthropogenic pressures. The hydrodynamics of these systems deeply depends on the effect of local morphology on the tidal propagation, so their permanent evolution constantly changes tidal dependent processes. For this reason, the present work aims to review the main characteristics of Ria de Aveiro hydrodynamics, a shallow lagoon located at the Atlantic Coast of Portugal, evaluating its evolution over the last 30 years (between 1987 and 2020) and investigating the main morphological changes in its origin. For this purpose, a comparative analysis is performed to determine the main process, including the observed hydrodynamic changes: Deepening of the inlet channel or of the main lagoon channels. To achieve these goals, the authors explored a remarkable database including bathymetric, tide gauge, and salinity data from 1987 until the present. This analysis is completed by the exploitation of a hydrodynamical model (Delft3D), validated against field data. Several simulations were performed to analyse changes in tidal propagation along the lagoon channels (considering the main semi-diurnal constituent <i>M</i><sub>2</sub>), tidal asymmetry, tidal currents, tidal prism, and salinity patterns. The results show that the general deepening of the lagoon observed between 1987 and 2020 led to important changes in the lagoon hydrodynamics, namely the increase/decrease of the <i>M</i><sub>2</sub> constituent amplitude/phase, as well as the increase of tidal currents and salt intrusion within the entire lagoon, with the changes being amplified towards the head of the main channels. Although the inlet deepening partially contributed to the modifications found, the results revealed that the deepening of the main lagoon channels had the most significant contribution to the changes observed during the last 30 years.https://www.mdpi.com/2077-1312/9/2/234morphologyDelft3D-FLOWtidal amplitudetidal phasetidal asymmetrytidal currents |
| spellingShingle | João Miguel Dias Francisco Pereira Ana Picado Carina Lurdes Lopes João Pedro Pinheiro Sérgio Miguel Lopes Paulo Gabriel Pinho A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) Journal of Marine Science and Engineering morphology Delft3D-FLOW tidal amplitude tidal phase tidal asymmetry tidal currents |
| title | A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) |
| title_full | A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) |
| title_fullStr | A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) |
| title_full_unstemmed | A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) |
| title_short | A Comprehensive Estuarine Hydrodynamics-Salinity Study: Impact of Morphologic Changes on Ria de Aveiro (Atlantic Coast of Portugal) |
| title_sort | comprehensive estuarine hydrodynamics salinity study impact of morphologic changes on ria de aveiro atlantic coast of portugal |
| topic | morphology Delft3D-FLOW tidal amplitude tidal phase tidal asymmetry tidal currents |
| url | https://www.mdpi.com/2077-1312/9/2/234 |
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