Keywords

Rosetta promontory, erosion, sedimentation, inlet stability

Location

Session B3: Integrated Hydrodynamic, Hydrological, Water Quality, and Ecological Models

Start Date

18-6-2014 2:00 PM

End Date

18-6-2014 3:20 PM

Abstract

Estuaries are very sensitive and vulnerable to any interventions in coastal dynamics. Most of these inlets experience coastal problems such as severe erosion and accretion. Rosetta promontory, Egypt, is an example of such an environment. It suffers from coastline erosion and sedimentation inside the inlet. The shoaling of the inlet leads to hindering the navigation process of fishing boats, negative impacts to estuarine and salt marsh habitat and decreases the efficiency of the cross section to transferring the flood flow to the sea.

This paper aims to reach a new condition of stability of Rosetta Promontory by using coastal measures. The main idea is to control the sediment movement within the promontory mouth which causes shoaling inside the inlet. These coastal measures include boundary jetties to eliminate the coastal dynamic in the entrance as well as additional flow to enhance the circulation condition of the promontory.

This target is achieved by using a hydrodynamic model, Coastal Modeling System (CMS) to predict the coastal structure effect. Extensive field data collection is used to build and calibrate the model. About 6 scenarios were tested for 5 years to reach a suitable solution that mitigates the coastal problems at the inlet with minimal environmental effect. These scenarios include east jetty of 360 m and the western jetty of 800 m with periodically sediment dredging from the river mouth will help stabilizing the Rosetta promontory.

 
Jun 18th, 2:00 PM Jun 18th, 3:20 PM

Long-term numerical simulation for stability within the river mouth; case study: Rosetta promontory, Egypt

Session B3: Integrated Hydrodynamic, Hydrological, Water Quality, and Ecological Models

Estuaries are very sensitive and vulnerable to any interventions in coastal dynamics. Most of these inlets experience coastal problems such as severe erosion and accretion. Rosetta promontory, Egypt, is an example of such an environment. It suffers from coastline erosion and sedimentation inside the inlet. The shoaling of the inlet leads to hindering the navigation process of fishing boats, negative impacts to estuarine and salt marsh habitat and decreases the efficiency of the cross section to transferring the flood flow to the sea.

This paper aims to reach a new condition of stability of Rosetta Promontory by using coastal measures. The main idea is to control the sediment movement within the promontory mouth which causes shoaling inside the inlet. These coastal measures include boundary jetties to eliminate the coastal dynamic in the entrance as well as additional flow to enhance the circulation condition of the promontory.

This target is achieved by using a hydrodynamic model, Coastal Modeling System (CMS) to predict the coastal structure effect. Extensive field data collection is used to build and calibrate the model. About 6 scenarios were tested for 5 years to reach a suitable solution that mitigates the coastal problems at the inlet with minimal environmental effect. These scenarios include east jetty of 360 m and the western jetty of 800 m with periodically sediment dredging from the river mouth will help stabilizing the Rosetta promontory.