Processes of coastal transport and deposition and the associated landforms Flashcards
What are the 2 key factors that determine which method of transport occurs?
Strength of current and sediment size
What is traction?
Large Sediment rolling along the seabed
What is saltation?
Smaller sediment is bounced along the seabed
What is suspension?
Small particles of sediment are held and moved in the water
What is solution?
Sediment dissolves in the water and is moved by the sea.
What is longshore drift?
The process that moves sediment along the shoreline
Long shore drift step 1
Waves approach at an angle due to prevailing winds. Swash washes sediment diagonally up the beach.
Long shore drift step 2
Gravity pulls backwash with sediment straight down the beach.
Long shore drift step 3
Repeated action results in net movement of sediment along the beach parallel to the shoreline. The direction is predominantly one way due to the prevailing winds. Changes in wind direction can result in movement in opposite direction.
