How do tides influence coastal erosion?

Tides play a significant role in influencing coastal erosion primarily through their impact on water level and wave energy. As tides rise and fall, they change the water level along the coast, which can expose different areas of the shoreline to the action of waves. This fluctuation can enhance the power of waves, especially during high tide when wave heights can increase, resulting in more energy being exerted on the coastline.

Higher tides can bring waves further inland, leading to increased erosion of the shoreline, particularly where there are cliffs or soft sediment that can be more easily worn away. Conversely, during low tide, certain areas may be left exposed, allowing for the potential for sediment accumulation in some regions. However, the primary mechanism through which tides influence erosion is by altering the areas impacted by wave energy, which can lead to significant changes in the coastal landscape over time.

In summary, the correct option emphasizes the dynamic relationship between tides, water levels, and wave energy, which together contribute to the process of coastal erosion.