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The Formation of Beaches, Bars, Spits and Tombolo's

Bibliography

How does Climate Change affect Coastal Deposition and Erosion?

  • http://www.bbc.co.uk/schools/gcsebitesize/geography/coasts/depositional_landforms_rev3.shtml
  • http://www.bbc.co.uk/schools/gcsebitesize/geography/coasts/depositional_landforms_rev2.shtml
  • http://www.slideshare.net/MsGeo/formation-of-spits-tombolos-and-bars-10001053
  • http://www.pznow.co.uk/marine/beachformation.html
  • http://geobytesgcse.blogspot.co.uk/2007/08/coastal-deposition-landforms-features.html
  • Predicts Increase in Global Temperatures
  • Over past 25 years - +0.2°C per Decade
  • Sea Levels Grow (3mm per year)
  • Storm Events
  • Wave Energy closer to shore and cliff faces
  • More coastal erosion
  • Places with Soft Rock

The Formation of Beaches

  • Constructive Waves
  • Strength of Wind and Fetch
  • Depositing and Transporting Material
  • Geology + Wave Energy
  • Long shore Drift
  • High and Low Watermark
  • Constantly Changing
  • Small Particles: Near water
  • Big Particles: Further near the Coast

Formation of a Bar

  • Spit grows along bay
  • Sandbank develops
  • Waves and Wind
  • Joins to mainland
  • Makes a lagoon
  • Infilled by Deposition

Thank you for Watching!

The Formation of a Tombolo

What is a Beach, Spit, Bar or Tombolo?

  • Created by Long shore Drift
  • When Spit continues to grow
  • Reaches an Island
  • Links to mainland (Bridges)
  • DEPOSITION
  • Long shore Drift Transports Material
  • Formed in Shallow Water
  • Salt Marshes can be created

Beaches:

  • Land form that lies along the shoreline
  • Contain little particles (Sand, gravel, shingle, pebbles and more)

The Formation of a Spit

Spits:

  • Extended stretch of beach material
  • Out to the sea from the coastline

Bars:

  • Ridge of sand and shingle
  • Cuts off a bay
  • Joins two headlands together

Tombolo:

is a ridge of sand and shingle that joins the mainland to an island.

These are all called:

Depositional Landforms

Image by Tom Mooring

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