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Your search keyword '"Oued Sebou estuary"' showing total 3 results
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3 results on '"Oued Sebou estuary"'

1. SWAN Modeling of Dredging Effect on the Oued Sebou Estuary.

Author

Iouzzi, Nisrine, Mouakkir, Laila, Ben Meftah, Mouldi, Chagdali, Mohamed, and Loudyi, Dalila

Subjects
DREDGING, ENVIRONMENTAL health, DREDGES, ECOLOGICAL integrity, ENVIRONMENTAL quality, COASTS, ESTUARIES
Abstract

The estuary ecosystem's health and ecological integrity are essential for preserving environmental quality, habitats, and economic activity. The main objective of the present study is to comprehend the wave hydrodynamic impact on the Oued Sebou estuary, which is situated in the Kenitra region on Morocco's north Atlantic coast in North Africa. Specifically, it focused on the dredging effect (caused by sand extraction) on the wave motion and its impact on the estuary environment. Different scenarios of wave-propagation simulations were carried out, varying the significant wave height, in deep water (from 1.5 to 4 m), and considering the bathymetry before and after two dredging cases of 2- and 4-m depths. The change of wave height at the Oued Sebou estuary shoreline was simulated by using the third version of the Simulating Waves Nearshore Model (SWAN). The SWAN model formulates the wave evolution in terms of a spectral energy balance on a structured grid. The effect of dredging on the wave spreading in addition to the flow hydrodynamic structures were extensively analyzed. According to the simulated results, the dredging activities in the Oued Sebou estuary mainly affect the river mouth and the southern breakwater area, increasing the potential erosive action. The areas at the northern coastal strip and near the northern breakwater are subject to possible accumulation of sediments. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
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2. Flow Hydrodynamic in Open Channels. Interaction with Natural or Man-Made Structures.

Author

Ben Meftah, Mouldi and Ben Meftah, Mouldi

Subjects
History of engineering & technology, Technology: general issues, Oued Sebou estuary, Reynolds number, SWAN, Turbulent Kinetic Energy (TKE), acoustic Doppler velocimeter, bathymetry, bed roughness, bridge scour, debris flows, dredging, empirical formulae, energy dissipation, energy spectra, entropy, equilibrium condition, extreme events, flow contraction, flow hydrodynamic structures, flow resistance, flow velocity, forecasting, friction coefficient, gentle-slope tunnel, lateral deflectors, length scales, n/a, numerical methods, open-channel flow, overtopping flow, prevision, rigid vegetation, riprap sloping structure, river bend erosion, river hydraulics, rough bed, scour, secondary currents, secondary flow, sediment concentration, shock wave, sinuous channel, solitary wave, stochastic analysis, structure function, suspended sediment flux, tidal range, transport mechanism, turbulence, turbulence kinetic energy, turbulent bursting, turbulent coherent structures, turbulent flow, turbulent velocity, vegetation, velocity field, velocity fluctuations, water-wing, wave spreading, wavelet transform
Abstract

Summary: Streams and rivers are subject to considerable hydrodynamic loads. Flow interactions with natural or man-made structures in open channels lead to the development of complex dynamic processes, requiring further studies to comprehend fully. This Special Issue has been conceived to facilitate improvement or propose new approaches, summarize the most important findings of previous studies, and encourage the development of further knowledge in the field of open-channel flows. Various topics are addressed in this SI, including flow interaction with hydraulic structures, flow dynamics in estuaries, flow-vegetation interactions, bed sediment effects on flow structures, and the effect of channel curvature on flow behaviors and sediment transport. The studies published in this Special Issue certainly help readers understand the turbulent flow involved in open channels and apply that understanding to the design and practice of hydraulic engineering and river management.

3. SWAN Modeling of Dredging Effect on the Oued Sebou Estuary

Author

Nisrine Iouzzi, Laila Mouakkir, Mouldi Ben Meftah, Mohamed Chagdali, and Dalila Loudyi

Subjects
SWAN, wave spreading, flow hydrodynamic structures, Oued Sebou estuary, Geography, Planning and Development, bathymetry, dredging, Aquatic Science, Biochemistry, Water Science and Technology
Abstract

The estuary ecosystem’s health and ecological integrity are essential for preserving environmental quality, habitats, and economic activity. The main objective of the present study is to comprehend the wave hydrodynamic impact on the Oued Sebou estuary, which is situated in the Kenitra region on Morocco’s north Atlantic coast in North Africa. Specifically, it focused on the dredging effect (caused by sand extraction) on the wave motion and its impact on the estuary environment. Different scenarios of wave-propagation simulations were carried out, varying the significant wave height, in deep water (from 1.5 to 4 m), and considering the bathymetry before and after two dredging cases of 2- and 4-m depths. The change of wave height at the Oued Sebou estuary shoreline was simulated by using the third version of the Simulating Waves Nearshore Model (SWAN). The SWAN model formulates the wave evolution in terms of a spectral energy balance on a structured grid. The effect of dredging on the wave spreading in addition to the flow hydrodynamic structures were extensively analyzed. According to the simulated results, the dredging activities in the Oued Sebou estuary mainly affect the river mouth and the southern breakwater area, increasing the potential erosive action. The areas at the northern coastal strip and near the northern breakwater are subject to possible accumulation of sediments.

Published
2022
Full Text
View/download PDF

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