What Is a Beach?
The beach is a strip of land along a coastline. Materials found on beaches include sand, pebbles, rocks, and seashell fragments. Most of these materials are the product of weathering, the process of a region’s land being eroded by water over thousands of years. The force of waves can wear away huge boulders, reducing them to grains of sand. The material on a beach may also include seaweed, shells, and other marine organisms.
The composition of a beach depends on sediments deposited upstream of the coastline. Wind and waves move these sediments, which are sorted according to their size, particle size, and state of compaction. The more compacted the sediments are, the less likely they will be to be eroded. In addition, if there is established vegetation, this will reduce the speed of fluid flow at the surface layer. The more particles in a fluid, the more powerful the erosion.
The beach’s shape depends on the local climate and coastal processes. The sediments deposit in a beach change in shape and location. In the winter, the water crests are higher and shallower, while in the summer, the seas are calmer and the periods between breaking waves are longer. The gentle wave action carries the sediment up the beach, whereas in summer, the water recedes. During this period, onshore winds carry sediments inland and enhance the dunes.
The sand in the beach changes shape with the seasons. The sand on the ocean shoreline decreases in height in storm season, which is usually winter. Storm season brings high energy waves, shorter wave crests, and increased erosion. The high energy waves mobilize sediment in the shallows, which then erodes them and lowers the profile of the beach. The sediment is also carried by longshore currents and out to sea by longshore bars. During storm season, the beach profile is low, which means there are fewer sands on the beach.
A beach is a thin, gently sloping strip of land where sediment and other materials have been deposited by wind and waves. The material on a beach can be sand, pebbles, rocks, seashell fragments, and pebbles. The materials on a beach are created by weathering, and are formed by erosion. The energy of wind and waves varies from area to area, depending on its length and slope.
In contrast, the beach’s sand profile is largely defined by the types of materials it contains. The sand and sediment that make up the beach are the result of the process of erosion. As a result, it is impossible to build a beautiful beach if it lacks a strong foundation. During storms, the waves will move the sand further offshore, which will affect the appearance of the beach. In contrast, a strong tide will create a sand-filled sand shoreline.