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The equilibrium beach profile is often described by a relation in which depth varies with distance offshore raised to the power

  • A.three halves
  • B.two
  • C.two thirds
  • D.one half

Answer: C

Dean's profile takes depth as proportional to distance to the power two thirds. The coefficient depends on sediment fall velocity and hence on grain size. The form is empirical but very widely used. It underpins most nourishment design calculations.

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