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Breakwaters can disrupt longshore currents by reducing their energy and altering their direction. Breakwaters can create calm areas behind them that lead to changes in sediment transport and can result in sediment accumulation or erosion. In some cases, breakwaters have been found to mitigate the effects of longshore currents by protecting Coastlines from erosion.
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Is longshore drift the cause or effect of a longshore current?
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.
What is a longshore current?
A longshore current is a current that runs parallel to the shoreline, moving sediment and water in the same direction as wave action. It is caused by the angle at which waves approach the shore, generating a flow of water along the coast. Longshore currents play a major role in shaping beaches and coastal landforms.
Is longshore drift the cause or the effect of a longshore current explain?
Longshore drift is the process by which sediments move along the shoreline due to waves hitting the coast at an angle. Longshore drift is the cause of a longshore current, which is the flow of water parallel to the shoreline that results from the movement of sediments.
Why don't longshore currents form in places were waves hit the shore head -on?
Longshore currents are driven by the angle at which waves approach the shore. When waves hit the shore head-on, rather than at an angle, there is no net transport of water along the shoreline to generate a longshore current. The wave energy is dissipated directly onto the shore, preventing the development of a longshore current.
Is longshore drift the cause or the effect of a longshore?
Longshore drift is the process where sediment moves along the shoreline due to waves and currents. It is the cause of coastal features like sandbars and spits that form parallel to the coast.
