Discussion
Consider the following statements about coastal morphodynamics.
1. Morphology and hydrodynamics adjust to one another continuously.
2. A change to one produces a response in the other.
3. Coastal morphology is essentially static over engineering timescales.
Answer: C
Correct answer: 1 and 2 only
Statements 1 and 2 define morphodynamics: form and flow adjust to each other continuously, and a change in either produces a response in the other. Statement 3 is the assumption the whole field exists to reject - coastal morphology changes on timescales of hours to decades, well within the life of any engineering work, which is why a structure alters the very processes it was designed against.
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