Effect of Human Interventions on Hydro-Dynamics of Sidi-Abdel Rahman Bay “North Western Coast of Egypt”

Nada Hossam Moghazy, Akram Soliman, Maysara ElTahan

Abstract


Sidi Abdel Rahman is the most precious coastal zone in the Egyptian North Coast. It is suffering from severe erosion. It has a variety of Coastal structures, including jetties, groins, revetments, and breakwaters; they were built to prevent coastal erosion. The study area involves tourism villages, located in Sidi Abdel Rahman Bay, which were subjected to fast erosion that got accelerated from May/June 2020 onward. This erosion led to the loss of approximately 40 meters of beach sand from the northern part of some beaches that are obviously redeposited southward. This may have been triggered by a number (or combination) of factors including climate-induced sea-level rise, and/or human-induced changes to sediment supply to the coast. This study aims to assess the shoreline changes during the interval between (2003-2021) in the study area of Sidi Abdel Rahman area. Also to evaluate the impact of the constructions of Marceillia and Hacienda resorts and the prediction of their future position. To achieve the aim of the study; Digital Shoreline Analysis System software (DSAS) had been used to illustrate the shoreline changes. Also, a 1D numerical model (LITPACK) was set up to predict the future position of the shoreline after 5 years. The results showed that urbanization and coastal structures caused significant erosion in the coastal area. Also, the results showed the amounts of sediment transport (accretion/erosion) in specific areas. The numerical model has shown that the area will suffer intensive erosion for around 1000 m distance with an average annual rate of 12m/year. The study recommends soft solutions as nourishment in addition to a set of hard protection measures of groins to eliminate erosion in this area. 

Keywords


Erosion, DSAS, northern Egyptian coast, shoreline changes.

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References


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DOI: https://dx.doi.org/10.21622/MARLOG.2024.13.1.115

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The International Maritime Transport and Logistics Journal (MARLOG)

E-ISSN: 2974-3141
P-ISSN: 2974-3133

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Arab Academy for Science, Technology and Maritime Transport (AASTMT)

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