geography eassy

Question

"Both erosional and depositional coastal landforms are found along the coast in the eastern part of Hong Kong. Explain why."

俾d points 我is ok.

唔駛成篇eassy 俾我!

因為我完全唔知可以從邊到入手.

Thanks

Answer 1

最愛解答

- the east and south-east monsoon are long fetch, the north-west north-east monsoon are medium fetch or even short fetch

- long fetch > high waves (energy strong = plunging breakers)

- high waves, short wavelength = destructive wave

- destructive wave: weak swash + strong backwash > remove material from beach = erosion

- erosion > sea caves (Po Pin Chau at Sai Kung), geo (Rocky Harbour at the south-east of Sai Kung Peninsula)

- the short fetch > sheltered area > sediment deposition

- form spits and bar (Pui O in Lantau Island)

2010-04-08 18:45:19 補充：

* But erosional landforms are more than depositional coastal landforms along the coast in the eastern part of Hong Kong.