Evaluation of the long-term variability of seawater salinity and temperature in response to natural and anthropogenic stressors in the Arabian Gulf

Elhakeem, Abubaker; Elshorbagy, Walid

doi:10.1016/j.marpolbul.2013.08.036

Cited by 18 publications

(5 citation statements)

References 15 publications

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“…Delft3D comprises a series of modules to simulate flow, waves, water quality, morphology, sediment transport and ecology. It has been successfully implemented in the past for several applications including the modelling of river deltas, freshwater discharges in bays, stratified density flows and salt intrusion problems (Hu et al 2009;de Nijs and Pietrzak 2012;Elhakeem and Elshorbagy 2013;Martyr-Koller et al 2017). More information on Delft3D can be found in its manual (Deltares 2013).…”

Section: Methodsmentioning

confidence: 99%

Numerical Investigation of River Discharge and Tidal Variation Impact on Salinity Intrusion in a Generic River Delta Through Idealized Modelling

Matsoukis

Amoudry

Bricheno

et al. 2022

Estuaries and Coasts

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Salinity in deltaic systems is expected to increase in the near future due to sea level rise. This will cause severe environmental consequences because salinity can be detrimental to agriculture, aquaculture and human consumption. Tidal dynamics are important in regulating salinity in river deltas. However, there is still uncertainty about the influence of different tidal amplitudes on deltas’ salinity. This paper investigates the impact of various tidal amplitudes on the spatiotemporal salinity distribution in deltas through three-dimensional idealized modelling. Numerical simulations are carried out with a common hydrograph and different tidal ranges. Both tide-influenced and river-dominated cases were considered. Results suggest that small increases in the tidal amplitude in river-dominated or low tidal regimes cases can have positive effects against salinization. Tide-induced mixing helps to increase freshwater areas and volumes. The water in the delta remains fresh for longer periods in scenarios representative of microtidal regimes. Further increases in the tidal amplitude to meso- and macrotidal levels reverse these effects and reduce freshwater areas and volumes. Results were used to test how salinity correlates with channel orders and river discharge in the presence of tides. These correlations are controlled more by bathymetry than tidal forcing. This study provides important insights into how changes in tidal range could impact spatiotemporal salinity distributions in deltas.

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Section: Methodsmentioning

confidence: 99%

Numerical Investigation of River Discharge and Tidal Variation Impact on Salinity Intrusion in a Generic River Delta Through Idealized Modelling

Matsoukis

Amoudry

Bricheno

et al. 2022

Estuaries and Coasts

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“…By default, DELFT3D uses the UNESCO formulation (UNESCO 1981). DELFT3D has been successfully implemented in the past for several applications including the modelling of river deltas, fresh water discharges in bays, stratified density flows and salt intrusion problems (de Nijs and Pietrzak 2012;Hu and Ding 2009;Elhakeem and Elshorbagy 2013;Martyr-Koller et al 2017). For more details on the numerical model, a detailed description of DELFT3D can be found in the manual (Deltares 2013).…”

Section: Methodsmentioning

confidence: 99%

Investigation of Spatial and Temporal Salinity Distribution in a River Dominated Delta through Idealized Numerical Modelling

Matsoukis

Amoudry

Bricheno

et al. 2021

Estuaries and Coasts

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The world’s river deltas are increasingly vulnerable due to pressures from human activities and environmental change. In deltaic regions, the distribution of salinity controls the resourcing of fresh water for agriculture, aquaculture and human consumption; it also regulates the functioning of critical natural habitats. Despite numerous insightful studies, there are still significant uncertainties on the spatio-temporal patterns of salinity across deltaic systems. In particular, there is a need for a better understanding of the salinity distribution across deltas’ channels and for simple predictive relationships linking salinity to deltas’ characteristics and environmental conditions. We address this gap through idealized three-dimensional modelling of a typical river-dominated delta configuration and by investigating the relationship between salinity, river discharge and channels’ bifurcation order. Model results are then compared with real data from the Mississippi River Delta. Results demonstrate the existence of simple one-dimensional and analytical relationships describing the salinity field in a delta. Salinity and river discharge are exponentially and negatively correlated. The Strahler-Horton method for stream labelling of the delta channels was implemented. It was discovered that salinity increases with decreasing stream order. These useful relationships between salinity and deltas’ bulk features and geometry might be applied to real case scenarios to support the investigation of deltas vulnerability to environmental change and the management of deltaic ecosystems.

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“…Another problem with the desalination units is that they pour brine back to the oceans. The brine discharged from the desalination process is characterized by its high salinity and temperature if the process is thermal distillation or its high salinity if the desalination process is reverse osmosis (Elhakeem & Elshorbagy, 2013). This brine is considered dangerous for the marine biodiversity.…”

Section: The Environmental Impacts Of Desalinationmentioning

confidence: 99%

“…The Installed Capacity of the Desalination Plants in the GCC Countries (Adapted from:Elhakeem & Elshorbagy, 2013) …”

mentioning

confidence: 99%

An Investigation into Hydrophobic Membrane Fouling in Desalination Using Membrane Distillation Technology

Al-Obaidli

2016

Qatar Foundation Annual Research Conference Proceedings Volume 2016 Issue 1

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Evaluation of the long-term variability of seawater salinity and temperature in response to natural and anthropogenic stressors in the Arabian Gulf

Cited by 18 publications

References 15 publications

Numerical Investigation of River Discharge and Tidal Variation Impact on Salinity Intrusion in a Generic River Delta Through Idealized Modelling

Numerical Investigation of River Discharge and Tidal Variation Impact on Salinity Intrusion in a Generic River Delta Through Idealized Modelling

Investigation of Spatial and Temporal Salinity Distribution in a River Dominated Delta through Idealized Numerical Modelling

An Investigation into Hydrophobic Membrane Fouling in Desalination Using Membrane Distillation Technology

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