Dynamics of the Douro estuary sand spit before and after breakwater construction

Bastos, L.; Bio, Ana; Pinho, José L. S.; Granja, Helena Maria; Silva, A. Jorge da

doi:10.1016/j.ecss.2012.05.017

Cited by 40 publications

(27 citation statements)

References 29 publications

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“…bathymetric survey performed by the IH. The sand spit topography was taken from a 2015 topographical survey [68], and the adjacent coastal bathymetry was obtained from the Bathymetric Model of Douro (IH). For both estuaries, additional ocean bathymetric data was extracted from the GEBCO database [69], and the different data sets considered were interpolated using a Kriging algorithm [70,71].…”

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

“…It flows from the Sierra de Urbion, in Spain, to the Atlantic Ocean, in northern Portugal, ending in an urban estuary surrounded by two major cities: Porto and Vila Nova de Gaia (Figure 1). The Douro is a highly dynamic narrow estuary with torrential regimes that produce strong currents and recurrent severe floods that cause serious damage to the riverine populations and navigation problems [68,72]. Its dynamics is mainly forced by freshwater flows, being very dependent on highly variable natural conditions and on the hydropower production schedule of the Crestuma-Lever dam and of the other 50 national and international river basin dams.…”

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

“…At the southern margin of the estuary's mouth lies a wetland (São Paio Bay) and an estuarine sand spit (Cabedelo) that partially obstructs the river mouth, protecting the estuary from the ocean's storm waves. This sand spit is made up of fluvial and maritime sediments, and its morphodynamics is conditioned by natural (wind, rainfall, river flow, waves, tides and storm surges) and human (breakwaters and dams construction, sand extraction, and dredging) processes [68,75,76]. To prevent erosion of the sand spit or its excessive migration into the navigation channel, maintaining both navigability and bank protection, a new detached breakwater was built parallel to the head of the sandbar, and the existing northern breakwater was extended.…”

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

“…To prevent erosion of the sand spit or its excessive migration into the navigation channel, maintaining both navigability and bank protection, a new detached breakwater was built parallel to the head of the sandbar, and the existing northern breakwater was extended. These structures, concluded in 2008, interfere with local sedimentary and hydrodynamic patterns, significantly increasing the area and volume of the sand spit in a relatively short period ($10 years) [68,77]. Historical records reveal ruptures or partial destruction of the sandbar during river flood events, allowing for a rapid discharge of excess water and reducing the risk of urban flooding [68].…”

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

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Numerical Modeling Tools Applied to Estuarine and Coastal Hydrodynamics: A User Perspective

Iglésias¹,

Paulo²,

Pinho³

et al. 2020

Coastal and Marine Environments - Physical Processes and Numerical Modelling

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Estuarine and coastal areas have been intensively studied given their complexity, ecological, and societal value and the importance of their ecosystem services. Estuarine and coastal management must be based on a sound characterization of these areas, which is achievable complementing the comprehensive field measurements with numerical models solutions. Based on a detailed comparison between two close-by, but extremely different, Portuguese estuaries (the Douro and Minho estuaries), this chapter intends to discuss how accurately numerical modeling tools can provide relevant information for a variety of coastal zones. They can be very useful for various applications in the planning and management fields, such as coastal and infrastructures protection, harbor activities, fisheries, tourism, and coastal population safety, thus supporting an effective and integrated estuarine and coastal management, which must consider both the safety of the populations and the sustainability of the marine ecosystems and services. In particular, the capacity of the numerical models to give a detailed characterization of morpho-hydrodynamic processes, as well as assess and predict the effects of anthropogenic interventions, extreme events and climate change effects, are presented.

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Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

Section: A Portuguese Case Study: Douro and Minho Estuariesmentioning

confidence: 99%

See 2 more Smart Citations

Numerical Modeling Tools Applied to Estuarine and Coastal Hydrodynamics: A User Perspective

Iglésias¹,

Paulo²,

Pinho³

et al. 2020

Coastal and Marine Environments - Physical Processes and Numerical Modelling

View full text Add to dashboard Cite

show abstract

“…Keberadaan mangrove berperan dalam memerangkap sedimen dan mempertahankan lokasi tersebut dari abrasi laut. Kondisi tersebut juga ditentukan oleh dominasi banjir akibat deformasi gelombang pasang, angin, pasokan sedimen dan transportasi sedimen, hidrodinamika serta perubahan dasar perairan (Bastos et al, 2012;Xie & Pan, 2012).…”

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