Ibrahim, Ahmed, El Molla, Anas, Ahmed, Hany. (1403). Evaluation of Human Interventions on Longshore Sediment Transport in Damietta Port Area. هنرهای کاربردی, 12(3), 85-96. doi: 10.22075/jrce.2024.32512.1948
Ahmed S.A. Ibrahim; Anas M. El Molla; Hany G.I. Ahmed. "Evaluation of Human Interventions on Longshore Sediment Transport in Damietta Port Area". هنرهای کاربردی, 12, 3, 1403, 85-96. doi: 10.22075/jrce.2024.32512.1948
Ibrahim, Ahmed, El Molla, Anas, Ahmed, Hany. (1403). 'Evaluation of Human Interventions on Longshore Sediment Transport in Damietta Port Area', هنرهای کاربردی, 12(3), pp. 85-96. doi: 10.22075/jrce.2024.32512.1948
Ibrahim, Ahmed, El Molla, Anas, Ahmed, Hany. Evaluation of Human Interventions on Longshore Sediment Transport in Damietta Port Area. هنرهای کاربردی, 1403; 12(3): 85-96. doi: 10.22075/jrce.2024.32512.1948

Evaluation of Human Interventions on Longshore Sediment Transport in Damietta Port Area

Journal of Rehabilitation in Civil Engineering
مقاله 6، دوره 12، شماره 3 - شماره پیاپی 35، پاییز 2024، صفحه 85-96    اصل مقاله (1.07 M)
نوع مقاله: Regular Paper
شناسه دیجیتال (DOI): 10.22075/jrce.2024.32512.1948
نویسندگان
Ahmed S.A. Ibrahim* ؛ Anas M. El Molla؛ Hany G.I. Ahmed
Department of Civil Engineering, Faculty of Engineering, Al-Azhar University, Cairo, Egypt
چکیده
Coastal regions are increasingly vulnerable to climate change-induced hazards such as erosion, with the combination of environmental threats and human activities exacerbating the vulnerability of these ecosystems. The study, spanning eight decades (i.e. 1940-2020), utilizes ECMWF-ERA5 data and a high-resolution model (MIKE21 SM) to simulate Longshore Sediment Transport (LST) in response to human interventions. Model accuracy is validated against observed data from the Damietta buoy and 2011 bathymetry data. Additionally, comparisons with the estimated LST from previous regional studies confirm the model's reliability. The investigation focuses on identifying trends in LST before and after human interventions, including the construction of Damietta Port (DP) and subsequent coastal protection structures. Two different trend analysis methods, linear regression and Theil-Sen, are used to capture temporal variations in LST. According to Theil-Sen, trend values increased as a result of the port construction, with Gross LST (GLST) and Net LST (NLST) increasing by 100-160%, respectively. However, both GLST and NLST experienced significant decreases following coastal protection (i.e. 27-24%, respectively). Moreover, the correlation analysis of wave parameters and LST revealed a variety of relationships over periods, illustrating the complicated relationship between sediment transport processes and human activities. Notably, prior to the construction of DP, there were strong correlations between NLST, wave height, and peak wave period (i.e. R=0.81-0.79, respectively), but these decreased significantly after construction (i.e. R=0.59-0.60). Following coastal protection, correlations with sediment transport increased (i.e. R=0.79-0.77).

تازه های تحقیق
  • The study presents an extensive 81-year dataset, allowing for a comprehensive analysis of coastal dynamics in the Damietta Port area.
  • The study underscores the significant impact of human interventions, such as the construction of Damietta Port and coastal structures, on longshore sediment transport dynamics.
  • Theil-Sen analysis provides more accurate estimates of LST trends, showcasing its effectiveness in capturing temporal variations compared to linear regression.
  • Correlation analysis of wave parameters and LST reveals the complex relationship between sediment transport processes and human activities, which is critical for effective coastal management.
  • The study suggests extensive research to assess the short- and long-term effects of construction on coastal morphology as well as identify additional factors influencing coastal dynamics.
کلیدواژه‌ها
Coastal hazard؛ Wave climate؛ Long-term trend؛ Sediment transport؛ MIKE21SM
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