2. Specification Detail1.1d How are beaches, spits and
barsformed? 3. Learning Objectives Explain the impact on the
coastline interms of landforms and related issues, e.g.deposition
in estuaries. Describe the named landforms and explaintheir
formation in terms of sequence andthe processes involved. 4. BBC
Bitesize Video Deposition Landforms : Here 5. Hurst Castle
Satellite Shot. Can you explain what is happening here? 6.
Landforms of deposition - Spitsestuaryheadlanddirection of
longshore drift 1) Larger shingle is deposited at a change of
direction in thecoastline due to less energy in the lee of a
headland. 2) Sediment rises above water level. Larger material is
thrown tothe back in times of storm increasing the stability of
thefeature. 3) Smaller sand and shingle is moved along the new
feature bylongshore drift. The landform extends outwards but
isvulnerable to wave attack. 4) Secondary wave action or refraction
cause a hooked end. Aseries of these develop as the spit extends.
5) The spit is prevented from extending further by the river flash
animationcurrent preventing further deposition (in a bay it may
continueforming a bar). A final curved end is formed but the spit
Click Hereconstantly changes shape through erosion and deposition.
7. Beaches, Spits, Bars Interactive labeling : Here Helpful
summaries : Here
