Discussion
Consider the following statements about beach erosion.
1. A single storm's erosion is usually recovered within months.
2. A persistent trend implies a deficit in the sediment budget.
3. Any observed erosion demonstrates a long term trend.
Answer: A
Correct answer: 1 and 2 only
Statements 1 and 2 are correct: a beach cut back by a single storm normally rebuilds over the following calmer months, and a trend that persists across years means more sediment is leaving the frontage than arriving. Statement 3 confuses an event with a trend - the whole difficulty of diagnosing erosion is that a bare beach after a storm looks alarming and may mean nothing at all.
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