Nearshore Coastal Changes Along the Nile Delta Shores

Khafagy, A.A.; Naffaa, M.G.; Fanos, A.M.; Dean, R.G.

doi:10.1061/9780872629332.248

Cited by 6 publications

(4 citation statements)

References 6 publications

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“…As a result, many temperate estuaries are generally suffering from sediment starvation. The Nile River carried about 110 Â 10 6 ton of sediment per year before construction of the Aswan High Dam (Khafagy et al 1992;Fanos 1995;Stanley and Warne 1998). About 90% of this sediment is now trapped in the reservoirs.…”

Section: Impacts From Land Clearing Soil Erosion and Dammingmentioning

confidence: 99%

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Wolanski

Boorman²,

Chı́charo

et al. 2004

Wetlands Ecol Manage

156

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Throughout the world, estuaries and coastal waters have experienced degradation. Present proposed remedial measures based on engineering and technological fix are not likely to restore the ecological processes of a healthy, robust estuary and, as such, will not reinstate the full beneficial functions of the estuary ecosystem. The successful management of estuaries and coastal waters requires an ecohydrologybased, basin-wide approach. This necessitates changing present practices by official institutions based on municipalities or counties as an administrative unit, or the narrowly focused approaches of managers of specific activities (e.g., farming and fisheries, water resources, urban and economic developments, wetlands management and nature conservationists). Without this change in thinking and management concept, estuaries and coastal waters will continue to degrade, whatever integrated coastal management plans are implemented. To help in this process of change there is a need to (1) develop a profound understanding of the effects of biota and biotic processes on mediating estuary response to changing hydrology, sediment and nutrient flux and of the biota on hydrology at the river basin scale, and (2) to develop science-based remediation measures at the river basin scale, with elements of ecohydrology and phytotechnology at their core, to strengthen the ability of the biota to sustain and adapt to human-induced stresses.

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Section: Impacts From Land Clearing Soil Erosion and Dammingmentioning

confidence: 99%

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Wolanski

Boorman²,

Chı́charo

et al. 2004

Wetlands Ecol Manage

156

View full text Add to dashboard Cite

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“…Over the past few decades, dynamic river conditions have been noticed to be under the influence of anthropogenic activities, leading to considerable changes in water discharge and sediment loads [1][2][3][4]. Major rivers in the world such as the Nile and Congo in Africa, Colorado in America, the Ebro in Europe, and the Yangtze, Yellow, and Mekong River in Asia have been reported to supply less sediment following anthropogenic activities [5][6][7][8][9][10][11][12]. This has resulted in catastrophic morphological changes, not only in the river itself but also in the delta [13].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hydrology and Sediment Yield in the Mekong River Basin Using SWAT Model

Sok

Oeurng

Ich

et al. 2020

Water

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The Mekong River Basin (MRB) in Southeast Asia is among the world’s ten largest rivers, both in terms of its discharge and sediment load. The spatial and temporal resolution to accurately determine the sediment load/yield from tributaries and sub-basin that enters the Mekong mainstream still lacks from the large-scale model. In this study, the SWAT model was applied to the MRB to assess long-term basin hydrology and to quantify the sediment load and spatial sediment yield in the MRB. The model was calibrated and validated (1985–2016) at a monthly time step. The overall proportions of streamflow in the Mekong River were 34% from surface runoff, 21% from lateral flow, 45% from groundwater contribution. The average annual sediments yield presented 1295 t/km2/year in the upper part of the basin, 218 t/km2/year in the middle, 78 t/km2/year in the intensive agricultural area and 138 t/km2/year in the highland area in the lower part. The annual average sediment yield for the Mekong River was 310 t/km2/year from upper 80% of the total MRB before entering the delta. The derived sediment yield and a spatial soil erosion map can explicitly illustrate the identification and prioritization of the critical soil erosion-prone areas of the MR sub-basins.

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“…In the international literature, the dynamics of longshore nearshore sandbars on micro‐tidal beaches has received little attention (Zenkovich, ; Khafagy et al , ; Guillen and Palanques, ; Rozynski et al , ; Certain et al , ; Tătui et al , ; Aleman et al , ). More things can be learned in the future about them, and Danube Delta's tideless environment can offer valuable information in understanding nearshore bar behavior under the control of waves and currents induced by wave breaking.…”

Section: Introductionmentioning

confidence: 99%

Alongshore variability of cross‐shore bar behavior on a nontidal beach

Tătui

Vespremeanu‐Stroe

Ruessink

2016

Earth Surf Processes Landf

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We report on a 6‐year nearshore bathymetric dataset from the Danube Delta (Romanian Black Sea coast) that comprises 16 km of erosive, stable and accumulative low‐lying micro‐tidal beaches northward of Sf. Gheorghe arm mouth. Two to three two‐dimensional longshore sandbars exhibit a net multi‐annual cyclic (2.8–5.5 years) offshore migration (20–50 m yr−1) in a similar way to other coasts worldwide. Bar morphology and behavior on the sediment‐rich accretionary (dissipative) sector differ substantially from that on the erosive (intermediate) sector. Shoreface slope is the most important factor controlling sandbar number and behavior. It determines different wave‐breaking patterns in the surf zone, translated into different offshore sediment transport and bar zone widths along the study site. Additionally, sediment availability, as a result of the distance from the arm mouth and of the long‐term evolution of the coast, controls the sandbar volume variability. These are all ultimately reflected in the variations of sandbar migration rates and cycle periods. A non‐dimensional morpho‐sedimentary parameter is finally presented, which expresses the bar system change potential as offshore sediment transport potential across the bar zone. Copyright © 2016 John Wiley & Sons, Ltd.

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Nearshore Coastal Changes Along the Nile Delta Shores

Cited by 6 publications

References 6 publications

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Ecohydrology as a new tool for sustainable management of estuaries and coastal waters

Assessment of Hydrology and Sediment Yield in the Mekong River Basin Using SWAT Model

Alongshore variability of cross‐shore bar behavior on a nontidal beach

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