Discussion
Match each sediment budget term with its category.
List I
A. River input
B. Cliff erosion
C. Submarine canyon
D. Dune deposition
List II
1. a sink removing sediment permanently
2. a source of sediment to the cell
3. a temporary sink landward of the beach
4. a source from within the cell itself
Answer: A
Correct answer: A-2, B-4, C-1, D-3
The budget divides into sources, sinks and stores. A river delivers sediment into the cell from outside it. Cliff erosion supplies sediment from within the cell itself, which is why protecting a cliff removes an input. A submarine canyon carries material into deep water beyond recovery, so it is a permanent sink. Dune deposition stores sediment landward of the beach, from which storms may later withdraw it.
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