low energy physical factors Flashcards
1
Q
where is most sediment supply from
A
from fluvial sediment load - nile
2
Q
pre Aswan what occurred annually
A
annual flood briefly covered much of the delta leaving behind a thick layer of silty mud
3
Q
what is most of the delta mad of
A
Clay - weak lithology
4
Q
why is it low energy
A
due to fluvial erosion exceeding marine erosion for 3000 years
5
Q
how has sediment surplus been threatened
A
as increased erosion to the promontories - 20m a year 1984 - 2001
6
Q
how is wind limited
A
limited north easterly winds - beaches west of Abu Quir - containing crescentic bars
