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العنوان
Shoreline changes and future prediction along North western coast /
المؤلف
Mansour, Nada Ahmed.
هيئة الاعداد
باحث / ندى أحمد منصور
مشرف / محمود الجمل
مشرف / ثروت عيد سرحان
مشرف / ثروت عيد سرحان
الموضوع
Marine Structure. Design and construction.
تاريخ النشر
2020.
عدد الصفحات
157 p. :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة (متفرقات)
تاريخ الإجازة
14/11/2020
مكان الإجازة
جامعة المنصورة - كلية الهندسة - قسم الهندسه المدنيه ( الري و الهيدروليكا)
الفهرس
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Abstract

Coastal shorelines, the interface between land and sea, Change in response to various factors, which may be morphological, climatological or geological in nature. The shoreline geometry refers to the collective behavior of waves, wind, rivers, tides and physical process. This thesis focuses on the shoreline change rate analysis by automatic image analysis techniques using multi temporal Landsat images and Digital Shoreline Analysis System (DSAS) along the North Western Coastal Egypt (El-Hammra port) for a years (1985, 1990, 1995, 2000, 2004, 2010, 2015 and 2019). Landsat images were geometrically and radio metrically corrected for the quantitative coastline delineation analysis. DSAS (Digital Shoreline Analysis System) was used as a reliable statistical approach for the rate of coastline change. The rates of shoreline changes in the form of erosion and accretion patterns are automatically quantified by three statistical parameters functioned in DSAS namely end point rate (EPR), net shoreline movement (NSM) and linear regression rate (LRR). NSM results elucidate that the seaside of El-Hammra port has experienced an extremely dynamic feature with an average erosion of the coastline with length of 1200m at the east of each groins. The mean accretion of the coastline with length of 2450m due to groins and jetty. In contrast, the shoreline on the down-drift side to the east has negatively retreated, and the corresponding beaches have regressed at variable rates yearly. Predictions for the next 60 years were then undertaken using a DSAS techniques on ArcGIS. The case study illustrates that, provided suitable predictive model to provide statistical information in support of sustainable coastal management for developing countries in the face of a changing climate. There are several methods to represent the beach changes around the composite coastal protection systems at the coastal zone. The model represents the movement of sandy soil sediment transport under the effect of wave and current interaction. The morphological changes development along quasi-uniform beaches are investigated. The model was applied on the natural bathymetry of area which located in the neighboring of El-Hammra port at the north western coast of Egypt. The numerical model was applied to clarify the predicted rates of erosion and accretion around the existing structures and the proposed additional protection structures. The model results were calibrated with the measured shoreline from 2015 to 2017 and verified with shoreline data from 2017 to 2019. The model was performed to predict the morphological changes from 2015 to 2030. Validation applied on the simulated and measured 2019 shoreline by calculating RMSPE value to evaluate the accuracy of the predicted shoreline. Finally, a hard coastal protection system has been proposed, consisting of detached breakwaters and two long groins. Results derived from the model show the reliability and suitability of the model to be applied as a correlated protecting systems for the similar regions.