Nile dela Flashcards
(24 cards)
How long is the Nile
6650 km
What is the Niles catchment area
3 million km ^2
What is the mean annual rainfall in the catchment area
600mm
What percentage of the sediment load is clay
30 <0.002mm
What percentage of the sediment load is silt
40 0.002-0.02
What percentage of the sediment load is fine sediment
30 0.02-0.2
The annual average sediment yield is
4.26 t/ha/year
What is the total sediment yield for the blue Nile basin In ethiopia
91.3 million
How long has depositional rates exceeded rates of erosion
3000 years
Where does the wind come from
NW 60 percent of time
For what percentage of time are NW winds active
55-60
What dam was built in 1964
Aswan
What coastal land forms can be found east of Abu Qir to Port Saïd
Longshore bars lagoons e.t.c
What coastal landforms can be seen in Alexandria
Crescentic bars
How has the building of the Aswan dam change the sediment budget
Sediment reduced from 120 million to close to 0
How has the lack of deposition affected the coastline
Coastal retreat as high as 148 metres per year
How much have sea levels in the Mediterranean rise by
1.2mm deep water = bigger waves
Where does the Nile originate
Ethiopia
What is the coastal retreat speed at
148 meters per year
How much are sea levels rising in the Mediterranean
1,2 mm
What is the speed of surface currents
8.4 to 23.14 cm/s
Name 2 lagoons
Manzalla and Burullus
How are features of the coastline in the Nile delta not related
Rosetta promontory made of limestone = very little erosion = very little LSD
