The Natural and Manmade Features of Beaches
Beaches are naturally occurring deposits of sand, shells, and other materials along the shoreline that are carried by tides and waves. They are generally wide and gently sloped, with little or no land development. Some have significant shell content, while others have almost no shell content at all. They may be rocky, or have manmade structures such as lifeguard posts, changing rooms, showers, and even shacks or bars.
Beaches are composed of a variety of materials, ranging from sand to gravel. The sediments that make up the surface of a beach are shaped by the conditions in which they are moved by water. Particle size and compaction are important factors in moving sediments. Compacted sediments are more resistant to erosion. However, vegetation can slow the fluid’s movement at the surface layer. Furthermore, particles suspended in the fluid increase its density, viscosity, and volume.
Depending on the climate, water pollution in coastal areas is a problem. Rainwater from storm drains carries pollutants such as harmful algae to recreational waters. Additionally, sewage and chemical spills can cause beach closures. Be sure to check the weather forecast before going to the beach. You may also want to check the beach’s etiquette before swimming. If you do, you might end up getting a nasty surprise. It might be best to avoid the water until it is drier.
The bedforms of the beach are infinitely variable. Each tidal cycle reveals new features. Figure 2.1 depicts examples of natural and manmade subdivisions of beaches. A beautiful view of the ocean, a peaceful setting, and a relaxing place for your family. The only downside is that the beach will never be completely dry and the water temperature may be dangerous. If you do go to the beach, please keep these tips in mind.
The composition of the beach is influenced by the sediments that form upstream. Whether they’re compacted or loose, they are affected by wind and water movement. If the sediments are compacted, they’ll be less likely to be eroded. But if the sediments are loose, they’re more susceptible to erosion. Therefore, the composition of the beach will depend on its surrounding conditions. It might be a lake or an ocean, or it may be a large river or a lake.
In nature, a beach can be a large expanse of sand and pebbles. It is often called a beach berm. It is a deposit of materials that comprises an active shoreline. It can be a sand beach, a shingle-beached beach, or a sandy beach. Aside from the natural characteristics of the beaches, they can also be described as wild sand or shingle beaches.