features of deposition

• when does deposition occur?

  whenever there is a deficit of energy
• what does deposition create?

  a number of landforms eg beaches & beach features
• deposition creates beaches and...?


  beach features
• what is another term for BERMS ?

  STORM RIDGES
• What are the 2 type of beaches?


  swash aligned beaches and drift aligned beaches
• which way are drift aligned beaches oriented?

  parallel to the direction of longshore drift
• which way are swash aligned beaches oriented?


  pARALLEL to the incoming wave crests
• how much LSD do swash aligned beaches experience?


  minimal
• how much LSD do drift aligned beaches experience?


  involve considerable amounts of sediment transport eg LSD
• Where are swash aligned beaches found?

  on irregular coastlines where LSD is impeded, and waves hit sections of the coast head on
• where do drift aligned beaches develop?


  along more regular and flatter coastlines where the wave direction is at an angle to the beach
• where do swash aligned beaches often occur and WHY?


  Often occur in bays due to wave refraction
• where can drift aligned beaches extent out from?


  can extend out from the coastline if the direction of the coastline SUDDENLY CHANGES (eg to create a SPIT)
• Give an example and 3 details of a DRIFT ALIGNED BEACH?


  Chesil Beach

  30km long

  High energy coastline

  LSD from the South West
• drift aligned beach

  
• give an example of a swash aligned beach and give 3 details?

  Poole Harbour

  a sheltered area

  low energy waves- refracted in bay form a large sandy beach

  onshore wind energy transfers sediment and forms dunes

  beach and dunes are both sediment stores