The Dynamic Development of the Sebou Valley and Its Impact on the River Domain Between Oued Inaouene and Oued Bouchabel (Pre-Rif) Morocco
Issue:
Volume 11, Issue 2, April 2022
Pages:
30-37
Received:
3 June 2022
Accepted:
20 June 2022
Published:
5 July 2022
DOI:
10.11648/j.wros.20221102.11
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Abstract: In this paper, we present the study's results of the fluvial erosion aspects in the Sebou valley, between River Inaouene and River Bouchabel in the Pre-Rif mountains. On the one hand, we analyzed the hydrodynamic factors interfering in the erosion, and on the other hand, we studied the types of banks exposed to the fluvial erosion processes and the degree of their deterioration. In order to achieve our objectives, this research was based on observation and interviews with the local population, fluvial erosion measurements, literature reviews, and the adoption of statistical series of precipitation and water flow for the Dar Al-Arsa station. As results, we found that despite the presence of the Allal El Fassi dam in the upstream of Sebou valley and the presence of the Idris I dam in the upstream of Inaouene valley, the water flow of Sebou between the Inaouene valley and the Bouchabel valley is characterized by important flood periods that erode the river banks, where the maximum flow in the studied field exceeds 400 m3/s, as in the cases of 2008 and 2010. This results in a variety of erosive phenomena, either directly, by the erosion of the banks under the effect of the floods, or indirectly due to landslides of the marl slopes overlooking the main river, which causes a continuous degradation of the river banks, with a rate of 7m per year. These hydromorphological processes contribute to a significant dynamic evolution of the meanders within the alluvial plain. Therefore, we summarizing the recommendations in the tracking of the studied channel status and configure it for the hazard.
Abstract: In this paper, we present the study's results of the fluvial erosion aspects in the Sebou valley, between River Inaouene and River Bouchabel in the Pre-Rif mountains. On the one hand, we analyzed the hydrodynamic factors interfering in the erosion, and on the other hand, we studied the types of banks exposed to the fluvial erosion processes and the...
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Application of Numerical Modelling to Assess Wave Conditions in the Port and Wave-Induced Port Downtime
Li Weiyi,
Sun Yabin,
Wang Kehua,
Zhang Jun
Issue:
Volume 11, Issue 2, April 2022
Pages:
38-47
Received:
24 July 2022
Accepted:
2 September 2022
Published:
8 September 2022
DOI:
10.11648/j.wros.20221102.13
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Abstract: Port infrastructures are strategic for local, regional and global economic growth and development. They play a crucial role as transportation hubs and gateways for the vast majority of goods transported around the world, linking local and national supply chains to global markets. Any significant disruption in the logistics of ports can have significant economic implications. Wave heights are the most crucial weather elements that affect port operations and result in inoperative hours. Therefore, it is of great importance to assess the wave conditions in the port and eventually evaluate the wave-induced operational downtime of the port. This study uses numerical wave modelling, including spectral wave model and Boussinesq wave model, to analyze the wave conditions in the port, and subsequently derive the wave-induced operational downtime assessed against the limiting wave height standard. Spectral and Boussinesq wave models are respectively used to simulate the wave transformation from deep sea to shallow water and wave agitation in the port basin in consideration of a variety of incident wave conditions. The transfer functions between various incident wave conditions and the wave heights in the port basin are then derived using multi-variable interpolation. Finally, the incident wave time series are transferred to the wave height time series at berths, based on which the port downtime is calculated via statistical analysis.
Abstract: Port infrastructures are strategic for local, regional and global economic growth and development. They play a crucial role as transportation hubs and gateways for the vast majority of goods transported around the world, linking local and national supply chains to global markets. Any significant disruption in the logistics of ports can have signifi...
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