Coasts

Erosional Coasts

  • 70%

  • quicker

  • Faster rates

  • sea cliffs

  • sea stacks

  • rock

Depositional

  • steady or stays the same

  • 30%

  • beach area

  • sediment

  • rivers deposit sediment into beach

  • Erosion from rocks end up here

  • slope= what type of gran

  • steeper= finer sediment

  • waves go up the direction of wind but come straight down



  • Berms= accumulation of sediments


  • barrier Islands= shifting coasts in the ocean

  • Biological Influences affect the coasts

    • Coral reefs build up coasts

  • Estuaries= water fills up areas

    • river meets the ocean

  • Top Left: Salt Wedge

    • fast river hitting ocean

    • river goes over saltwater

  • Top Right: Partially Mixed

    • deepness allows to mix better

    • same as Well Mix

  • Bottom Left: Well Mix

    • mix well at every point

    • slower river and moderate - high tidal range

  • Bottom Right: Fjord

    • smaller surface area

    • u- shape valley

    • high river input