Accretion and Erosion Patterns along Rosetta Promontory, Nile Delta Coast

Elsayed, Mohamed A. K.; Younan, Nazeih A.; Fanos, A.M.; Baghdady, Khalid H.

doi:10.2112/03-0121.1

Cited by 17 publications

(6 citation statements)

References 1 publication

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“…7a, b). The western revetment (1.5 km long) was constructed during 1986-1991 and the eastern revetment (3.5 km long) was constructed during 1988-1991 (Elsayed et al 2005). Although these seawall revetments were effective to prevent further headland loss, they caused erosion at the upside and downside ends of these seawalls.…”

Section: The Role Of Protection Measuresmentioning

confidence: 99%

Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery

Hereher

2011

Environ Earth Sci

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A set of six Landsat satellite images with 5-9 years apart was used in a post-classification analysis to map changes occurred at Rosetta promontory between 1973 and 2008 due to coastal erosion. Spectral information were extracted from two multi-spectral scanner (MSS) images (1973 and 1978), three thematic mapper (TM) images (1984, 1990, and 1999), and one enhanced thematic mapper plus (ETM?) image (2008). To estimate the quantity of land loss in terms of coastal erosion, a supervised classification scheme was applied to each image to highlight only two classes: seawater and land. The area of each class was then estimated from the number of pixels pertaining to this class in every image. In addition, the shoreline position was digitized to address retreat/advance pattern throughout the study period. Results showed that Rosetta promontory had lost 12.29 km 2 of land between 1973 and 2008 and the shoreline withdrew southward about 3.5 km due to coastal erosion. Most land loss and shoreline retreat occurred between 1973 and 1978 (0.55 km 2 /year and 132 m/year, respectively). Coastal protection structures were constructed successively at the promontory. These structures have considerably contributed to reduce coastal erosion; however, they promoted downdrift erosion.

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Section: The Role Of Protection Measuresmentioning

confidence: 99%

Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery

Hereher

2011

Environ Earth Sci

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“…Currents flowing towards the NE to SW (20%) that are responsible for transporting sediment from moving sediment eroded from the Rosetta promontory are essentially effective in the sedimentation process of the navigation channel and the berthing basin. The Rosetta promontory north of the study area has been subjected to some of the most severe shoreline and seabed erosion of all the world's delta coastlines during the 20th century [6,10], see Figure 1 for location. Under the effect of waves and currents major transport reversal occurs in front of the Rosetta mouth, creating a divergent sediment transport nodal zone where sand moves to both the east and southwest away from the month.…”

Section: Current Regimementioning

confidence: 99%

Sedimentation Processes at the Navigation Channel of the Liquefied Natural Gas (LNG) Port, Nile Delta, Egypt

Deabes¹

2010

IJG

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Liquefied Natural Gas (LNG) port is located at Abu Qir Bay on the northwestern coast of the Nile delta, Egypt. The port was constructed in 2004 to export liquefied natural gas worldwide. The offshore basins of this port including the turning and berthing areas (15-m depth) are connected to the deep water by a 15-m depth dredged channel that extends 4 km offshore. However, the navigation channel and its contiguous basins have experienced problematic shoaling that might affect the navigation activities of gas tankers. Sedimentation processes have been investigated by analyses of waves, currents, bathymetry, grain size of seabed and channel dimensions. Sedimentation rates are estimated using a developed numerical model. Sedimentation rate fluctuates between 0.048 × 106 m3/month and 0.388 × 106 m3/month, with an annual sedimentation rate of 1.977 × 106 m3/yr. The variance in the sedimentation rates between winter and summer resulted in increasing of current speed and direction flowing towards offshore. The sedimentation process is influenced by the temporal variability in the direction and intensity of the predominant waves, currents, orientation of navigation channel, basin breakwaters, seafloor morphology and sediment sources. Due to the geographic location of LNG port it lays within a sediment sink for sediments supplied from different alternating directions by several pathways, flowing towards the N-W, S-W, N-E, and S-E quadrants. Most of these currents components are substantially effective in transporting fine-grained sediment towards the navigation channel axis and contiguous basins. Together with these currents, the predominant NW and SE waves acting to agitate and stirrup sediments in the vicinity of the port, and thereby accelerating sedimentation rates

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“…Although protection works (two revetments of 5 km long and 14 groins east and west of the promontory) have been constructed to mitigate the erosion problem at the Rosetta outlet [5], the shoreline along Rosetta promontory is still unstable and the protection works have not been efficient enough to stop erosion [6]. These coastal structures decreased the shoreline erosion within the construction area, but shifted the problem to the adjacent beaches.…”

Section: Introductionmentioning

confidence: 99%

Testing A Combination Of Hard And Soft Measures To Enhance The Stability Of Rosetta Outlet

Masria¹,

Abdel-Aziz²,

Negm³

2015

Oceanography

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Accretion and Erosion Patterns along Rosetta Promontory, Nile Delta Coast

Cited by 17 publications

References 1 publication

Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery

Mapping coastal erosion at the Nile Delta western promontory using Landsat imagery

Sedimentation Processes at the Navigation Channel of the Liquefied Natural Gas (LNG) Port, Nile Delta, Egypt

Testing A Combination Of Hard And Soft Measures To Enhance The Stability Of Rosetta Outlet

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