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Beach cusps are

  • A.channels cutting across the backshore
  • B.regularly spaced crescentic features along the swash zone
  • C.large offshore bars lying broadly parallel to the shoreline
  • D.notches cut into the base of a cliff

Answer: B

Correct answer: regularly spaced crescentic features along the swash zone

Beach cusps are a series of seaward-pointing horns separated by embayments, spaced remarkably regularly along the swash zone. They form by self-organisation, the swash circulation and the developing morphology reinforcing one another, and the spacing scales with the swash excursion. They are a small-scale illustration of the morphodynamic feedback the topic ends with.

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