coastal systems- sediment sources and cells

?
the sediment that forms beaches, mudflats and other depositional beaches originate from what three sources?
cliff erosion, offshore areas and rivers
1 of 10
cliff erosion provides a small fraction of beach sediment what percentage?
5%
2 of 10
some sediment have been combed form the shallow sea bed ________
offshore
3 of 10
as a result of deglaiation what has happened?
sea level has risen by around 100m in teh last 18,000 years
4 of 10
what is the main source of coastal sediment?
rivers (90%)
5 of 10
sand and shingle are transported into the coastal system through the river _____ as bedload; ____ and ____ as a suspended load
mouth
slit and clay
6 of 10
coastal sediments are confined to well-defined stretches of coastline know as? with little movement between the ________ cells.
sediment cells
adjacent
7 of 10
England and wales have been dived into how many sediment cells.
11
8 of 10
What types of systems are are sediment cells
Closed system so nothing is gained or lost
9 of 10
What are sediment sinks
Areas where sediment becomes trapped. Estuaries
10 of 10

Other cards in this set

Card 2

Front

cliff erosion provides a small fraction of beach sediment what percentage?

Back

5%

Card 3

Front

some sediment have been combed form the shallow sea bed ________

Back

Preview of the front of card 3

Card 4

Front

as a result of deglaiation what has happened?

Back

Preview of the front of card 4

Card 5

Front

what is the main source of coastal sediment?

Back

Preview of the front of card 5
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