it doesnt 'work' first of all though i shall tell you what happens!
sand is carried as the tide comes in it goes out straight and pushed back to shore diagonally.
like this |/|/|/|/|/
unless groynes are put in not like groins!!!! GROYNES
when there is a strong swash there will be a weak backwash leaving rubbish on the beach.
when there is a weak swash there will be strong back wash taking rubbish away that is long shore drift,
They don't. Groynes inhibit longshore drift. Longshore drift occurs when currents develop parallel to a shoreline as a result of wave action, carrying sediment with them. Groynes catch sediment and interfere with these currents. Continental drift, a part of plate tectonics, is a completely unrelated process.
longshore drift
Sand is gradually carried down the beach by Longshore Drift.
Short shore drift consists of the transportation of sediment (clay, silt, sand and shingle) along a coast at an angle to the shoreline, which is dependent on prevailing wind direction, swash and backwash. This process occurs in the littoral zone, and in or close to the surf zone. The process is also known as short shore transport or littoral drift.Short shore drift is influenced by numerous aspects of the coastal system, with processes that occur within the surf zone largely influencing the deposition and erosion of sediments. Short shore currents can generate oblique breaking waves which result in short shore transport.Short shore drift can generally be defined in terms of the systems within the surf zone as seen in figure 1. This figure shows that sediment transport along the shore and surf zone is influenced by the swash (occurs in the direction of prevailing wind), which moves the pebble up the beach at the angle of the waves, and moves the pebble back down the beach due to the influence of gravity.Short shore drift affects numerous sediment sizes as it works in slightly different ways depending on the sediment (e.g. the difference in long shore drift of sediments from a sandy beach to that of sediments from a shingle beach). Sand is largely affected by the oscillatory force of breaking waves, the motion of sediment due to the impact of breaking waves and bed shear from long shore current. Whereas because shingle beaches are much steeper than sandy ones, plunging breakers are more likely to form, causing the majority of long shore transport to occur in the swash zone, due to a lack of surf zone.
Longshore drift is evidence of constructive waves. Constructive waves carry and deposit sediment along the coastline, resulting in the movement of sand and material parallel to the shore. This process helps build up beaches and create landforms such as spits and barrier islands.
Spits are formed when longshore drift travels past a point where the dominant drift direction and shoreline do not veer in the same direction.
long-shore drift
Spits are formed when longshore drift travels past a point where the dominant drift direction and shoreline do not veer in the same direction.
Longshore drift is the process of sediment moving along a beach due to wave action. It is driven by the longshore current, which is a current that flows parallel to the shoreline. Therefore, longshore drift is the result or effect of a longshore current.
throught the processes of long shore drift and transportation & deposition
Longshore drift and longshore currents can produce landforms such as spits, tombolos, barrier islands, and sand dunes. These landforms are typically found along coasts with significant wave action and sediment movement.
Because it does okay! Well i need the answer to this as well :(
The direction of longshore drift is typically parallel to the coastline. It moves sediment and materials along the shoreline in a zigzag pattern due to the angle of incoming waves.
longshore drift
longshore drift
Devices: Wave power generators. Groynes. Natural processes: Long-shore drift.
Longshore drift or laminar flow occurs along beachs where the surf comes in at a horizontal angle to the beach. If the beach runs North-South, and the waves come in from the Southwest, you're likely to experience longshore drift to the North.