Types of Beaches

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Coastal Systems

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6 Terms

1
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Zones and Characteristic Features of a Beach

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2
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Ridges and Runnels

  • Coastal depositional landforms formed on wide, sandy beaches with shallow gradients and large tidal ranges 

  • Ridges are elevated lines of deposited sand parallel to the shoreline

  • Runnels are water-filled depressions between the ridges

3
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Ripples

  • Small-scale, short-lived patterns in the sand caused by the backwash of waves as they retreat

  • Particularly at a low tide 

4
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Cusps

  • Semi-circular depressions that form on mixed sand and shingle beaches due to the interaction if wave swash and backwash

5
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Berms

  • Ridge-like deposits of sand or shingle found on the upper part of a beach, formed by the swash of constructive waves

  • Mark high tide lines during the spring and neap tide cycles

  • Create a stepped profile on the beach

6
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Storm Beaches

  • Ridge of large sediment found at the back of a beach, formed by the high energy of destructive waves during severe storms

  • More prominent on shingle beaches

  • Furthest reach of storm-driven swash

  • Narrow, steep and uniform profile

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