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A low-energy coastal environment: the Nile data (What (Foreshore plains,…
A low-energy coastal environment: the Nile data
why
Rates of fluvial depositional exceeded rate of marine erosion over 3000 years.
Low discharge though has a large sediment load
What
Foreshore plains
elongated ridges, running a parallel to the present coastline, alternating with lagoons, salt mashes and alluvial deposits in the depressions between them
The frontal plain
is located south of the Foreshore plains and has scattered eroded limestone outcrops and clay deposits
The sandy zone
composited of a variety of different sand formations, such as sheets, dunes and hammock
Underwater sandbars
Abu Qir Headland
Long crescentic bar system
where
The Nile delta Egypt 260 Km from Cairo
Med sea
changes to the sediment budget
In general delta low energy
Since the building of Aswan High Dam am imbalance has been created between two of the major forces affecting the delta: erosion and accretion
Rapid reduction in amount of sediment accreted- causes significant changes along the shoreline of northwest with accelerated erosion and rates of coastal retreat as high as 148 m/year
Rising sea levels also contributed to higher erosion rates as deeper water produces larger waves- higher amounts of energy and these reach further inland.