Machine-translated by Google. Questions are authored in English.
Top

Discussion

Downdrift erosion beside a harbour breakwater arises because

  • A.the structure lowers the tidal range in the region concerned
  • B.the structure changes the grain size of the beach sediment
  • C.the structure intercepts the longshore drift reaching that coast
  • D.the structure raises the wave height reaching the downdrift side

Answer: C

A fillet of sand builds against the updrift arm while the coast beyond receives nothing at all. Relocating the difficulty rather than removing it is the standing objection to any barrier placed across the drift. Bypassing is the usual compensating measure.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.