Numerical Investigation of New Alternative Nador Lagoon Inlet Relocation

Jeyar, Mohammed; Chaabelasri, Elmiloud; Salhi, Najim

doi:10.1615/interjfluidmechres.v42.i5.50

Cited by 12 publications

(4 citation statements)

References 11 publications

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“…The dredging of Encañizadas channel up to a certain maximum depth can lead to a situation where this channel has a higher influence on the global lagoon dynamics than El Estacio, which is currently the main inlet in terms of exchange of water between the lagoon and the open sea. The position of the main inlet has an influence on water circulation, as demonstrated by Jeyar et al [21] in their study about a relocation of the inlet in Nador lagoon.…”

Section: Current Speedmentioning

confidence: 92%

“…This study delimits the range of changes in the WRT due to the dredging, which can reach up to a 50% reduction is some areas. Jeyar et al [21] developed a two-dimensional (2D) model of the Nador lagoon through the UFV-SWM model in order to analyse changes in the water renewal times due to the relocation of the inlet as a measure of the improvement of water quality in the lagoon. One recent study is the work carried out by Teatini et al [22], where a numerical model of the Venice lagoon was used together with various techniques (Computational Fluid Dynamics (CFD) models, field measurements) in order to analyse the effects of dredging the channels on the water exchange from the aquifer existing underneath the lagoon and the consequences for water quality in terms of pollutants transport.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the Hydrodynamic Response of the Mar Menor Lagoon to Dredging Inlets Interventions through Numerical Modelling

García-Oliva

Pérez-Ruzafa

Umgiesser

et al. 2018

Water

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The Mar Menor lagoon has been subjected to high anthropogenic pressures. Among them, in the early 1970s, dredging and enlargement of one of the inlets to make a navigable channel has had strong consequences on the hydrology, ecology, and fisheries of the lagoon. In recent years, changes in agricultural practices have induced an eutrophication process, leading to loss of water quality. As a solution, some management proposals have included dredging of the inlets in order to increase the water renewal. However, these proposals did not take into account the negative effects of previous experiences nor the consequences on environmental conditions of the lagoon and therefore on biological processes. The purpose of this work is to assess the effect that proposed mitigation measures, could have on the hydrodynamic conditions and discuss its possible ecological consequences. A three-dimensional (3D) numerical model has been used to simulate the lagoon under different dredging scenarios, covering different dredging depths and extensions. The simulated current fields and fluxes through the inlets, as well as water renewal times have been compared for the different scenarios. It is found that some of the considered scenarios take the system beyond the threshold of sustainability, where the modified current dynamics could affect sediment transport, beach dynamics and fishing capacities in a significant way. Water exchange with the Mediterranean is also strongly affected, with consequences for species connectivity, and a homogenization of the water renewal times that could lead to loss of ecosystem heterogeneity and structural complexity. The study demonstrates the utility of numerical models as effective tools for the management of coastal areas.

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Section: Current Speedmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Assessing the Hydrodynamic Response of the Mar Menor Lagoon to Dredging Inlets Interventions through Numerical Modelling

García-Oliva

Pérez-Ruzafa

Umgiesser

et al. 2018

Water

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“…In the current model, schemes and techniques whose robustness is widely recognized were used: especially, the Roe-MUSCL scheme for computing convective flow fluxes and Vázquez scheme for treatment of the term source. This model is initiated and developed by Elmahi et al in [12] and refined and tested in real and complex areas by Chaabelasri et al in [13][14][15][16].…”

Section: Finite Volume Methodmentioning

confidence: 99%

Effect of Coastal Waves on Hydrodynamics in One-Inlet Coastal Nador Lagoon, Morocco

Jeyar

Chaabelasri

Salhi

2015

Modelling and Simulation in Engineering

Self Cite

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Nador lagoon is a coastal system connected to the sea through a narrow and shallow inlet; understanding its hydraulic performance is required for its design and operation. This paper investigates the hydrodynamic impacts of the whole lagoon due to tidal waves using a numerical approach. In this study we use a two-dimensional, depth-averaged hydrodynamic model based on so-called shallow water equations solved within triangular mesh by a developed efficient finite volume method. The method was calibrated and validated against observed data and applied to analyze and predict water levels, tidal currents, and wind effects within the lagoon. Two typical idealized scenarios were investigated: tide only and tide with wind forcing. The predicted sea surface elevations and current speeds have been presented during a typical tidal period and show correct physics in different scenarios.

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“…It is separated from the Mediterranean Sea by a 25 km long sandbar, with one artificial opening (300 m wide and 6 m deep) which assures a renewal of water in 15 days instead of 57 days under the configuration of the old pass (Maicu et al, 2021). The water balance of the lagoon is expressed by three sources: the marine waters passing through the artificial pass and which are still dominant, a fresh water contribution from two large groundwater and temporary flows of fluvial (Jeyar et al, 2015).…”

Section: Study Areamentioning

confidence: 99%

Updated and comprehensive checklist of the fish fauna of the Marchica Lagoon (Alboran Sea, Morocco), following hydraulogical intervention

al.¹

2023

Egypt. J. of Aquatic Biolo. and Fish.

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Numerical Investigation of New Alternative Nador Lagoon Inlet Relocation

Cited by 12 publications

References 11 publications

Assessing the Hydrodynamic Response of the Mar Menor Lagoon to Dredging Inlets Interventions through Numerical Modelling

Assessing the Hydrodynamic Response of the Mar Menor Lagoon to Dredging Inlets Interventions through Numerical Modelling

Effect of Coastal Waves on Hydrodynamics in One-Inlet Coastal Nador Lagoon, Morocco

Updated and comprehensive checklist of the fish fauna of the Marchica Lagoon (Alboran Sea, Morocco), following hydraulogical intervention

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