What is the definition of erosion in coastal environments?

Erosion in coastal environments specifically refers to the process by which rocks and soil are worn away and removed from the Earth's surface. This involves various natural forces such as water, wind, and ice that contribute to breaking down rock and soil materials. In coastal areas, wave action is particularly influential, as it continuously strikes the shoreline, leading to the disintegration of rocks and the transportation of sediment away from the coast. This dynamic process shapes the coastline over time, creating features such as cliffs, beaches, and coastal platforms.

The other options describe different aspects of coastal processes. For instance, sediment deposition along the shoreline refers to how materials are laid down rather than removed. Similarly, the formation of new landforms due to sediment accumulation focuses on the constructive processes rather than the destructive actions taken during erosion. Lastly, while tidal movements do affect coastal land, they primarily relate to the movement of water and are not specifically about the wearing away of the ground. Thus, option B is the most accurate definition of erosion within coastal contexts.