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Definition
Abrasion occurs when a surface is scraped and altered by friction. When moving particles are enclosed in water and strike a surface, water abrasion occurs. The moving particles in the water cause weak and loose material on the rock to dislodge. Broken particles may be carried away into the water or wind, or fall due to gravity.
Abrasion Factors
The strength and intensity of the water abrasion is determined by a number of factors. The hardness of the material determines how resistant it is against the force applied by the particle-filled running water, and the concentration of the particles in the water determines how much force is applied to the rock. If there are hardly any particles in a wave that strikes a rock, for example, the rock will not abrade very much. The velocity of the water also influences the intensity of abrasion.
Abrasion Platforms
An abrasion platform is located on the shore near oceans, seas and other natural bodies of water. These platforms are subjugated to regular wave activity and water abrasion. Because of this activity, the platform is only visible during low tides. Beach shingles, which are beaches composed of pebbles and small rocks along the shore, are the main catalysts creating and modifying abrasion platforms.
Erosion
Erosion is a process that is similar in many aspects to abrasion. Water strikes rocks, soils, minerals and other materials and small rocks, pebbles and loose particles from the soil are moved from the surface into the water. These materials are then transported in the water and end up striking other surfaces, thereby causing abrasion.