A set of interrelated objects comprising components (stores) and processes (links) that are connected together to form a working unit.
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What is a sediment cell?
A stretch of coastline and its associated nearshore area within which the movement of sediment is largely self-contained. It is a closed system, meaning that no sediment is transferred from one cell to another.
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What determines the boundaries of sediment cells?
The topography and shape of the coastline.
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Why are sediment cells unlikely to be completely closed systems?
With variations in wind direction and the presence of tidal currents, its inevitable that some sediment is transferred between neighbouring cells.
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Describe a spilling wave.
Steep waves breaking onto gently sloping beaches. Water spills gently forward as the wave breaks.
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Describe a plunging wave.
Moderatley steep waves breaking onto steep beaches. Water plunges vertically downwards as the crest curls over.
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Describe a surging wave.
Low-angle waves breaking onto steep beaches. The wave slides forward and may not actually break.
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Describe a constructive wave.
-Low in height. -Long wavelength. -Low frequency. -Break as spilling waves. -Strong swash. -Weak backwash.
When rock outcrops run parallel to the coast they tend to produce straight coastlines.
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What is a discordant coastline?
When rocks lie at right angles to the coast.
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Other cards in this set
Card 2
Front
What is a sediment cell?
Back
A stretch of coastline and its associated nearshore area within which the movement of sediment is largely self-contained. It is a closed system, meaning that no sediment is transferred from one cell to another.
Card 3
Front
What determines the boundaries of sediment cells?
Back
Card 4
Front
Why are sediment cells unlikely to be completely closed systems?
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