Waves typically approach a section of coastline as shown in the figure below. Assume the seabed contours run parallel to

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Waves Typically Approach A Section Of Coastline As Shown In The Figure Below Assume The Seabed Contours Run Parallel To 1 (208.23 KiB) Viewed 13 times

Waves typically approach a section of coastline as shown in the figure below. Assume the seabed contours run parallel to the coastline, whereby the average beach slope in the surf zone is 1:10. The significant wave height at the breaker line is 1.5 m. Assume shallow water and typical beach sands. N B Wave direction coming from: B = 45° from North WAVE CRESTS COASTLINE 25 Determine: a) The yearly longshore sediment transport rate based on the typical wave conditions shown above [8 marks] b) What type of structures could be used to prevent loss of beach sediments due to longshore currents? Explain why, using sketches to illustrate your answer. [4 marks] c) Assuming the significant wave height at the breaker line represents the mean significant wave height, how many meters offshore should the structures be extended to prevent longshore transport? Assume the structures are constructed perpendicular to the shoreline. [6 marks]