Swash Swash, or forewash in geography, is a turbulent layer of water that washes up on the beach after an incoming wave has broken. The swash action can move beach materials up and down the beach, which results in the cross-shore sediment exchange. [1]
Propagation of thin sheets of seawater up and down the beach, after the collapse of waves on the beach face. Swash is the decelerating uprush phase and backwash is the accelerating downrush phase. Fig. 1. Swash on a reflective beach, Avoca Beach, NSW, Australia.
Swash, or forewash in geography, is a turbulent layer of water that washes up on the beach after an incoming wave has broken. The swash action can move beach materials up and down the beach, which results in the cross-shore sediment exchange. [1] .
The swash is the movement of the wave from the sea to the beach which brings sediment with it. Whereas the backwash is the movement of the wave from the beach to sea.
Swash and backwash are the two main movements of water associated with waves breaking on a shoreline. The swash is when a wave washes up onto the shoreline and the backwash is when the water from a wave retreats back into the sea.
When waves crash onto the shore, they push water and sand up the beach slope. This forward movement of water is called swash. It plays an important role in shaping the coastline, as it can move sand and small stones along the shore, changing the shape of the beach over time.
Coastal waves, primarily formed by the wind blowing across the surface of the sea, play a key role in shaping the coastline. Waves are usually classified as constructive or destructive based on their characteristics and impacts.