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Bridlington's defences consist of groynes on the beach, which lessen the effects of longshore drift.

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What are the four types of coastal defenses?

The four main types of coastal defenses are seawalls, breakwaters, groynes, and beach nourishment. Seawalls are vertical structures built parallel to the shore to prevent erosion, breakwaters are offshore barriers that protect the coast from wave action, groynes are perpendicular structures that trap sediment to build up beaches, and beach nourishment involves adding sand or sediment to a beach to widen it and protect it from erosion.


What factors influence shoreline erosion?

Factors that influence shoreline erosion include wave strength, coastal storms, sea level rise, sediment supply, coastal development, and human activities such as dredging and construction. Additionally, the presence or absence of natural defenses like dunes or vegetation can also impact erosion rates.


How does coastal erosion happen?

Coastal erosion occurs when waves, currents, and tides wear away the shoreline, removing sediment and rocks. Factors such as natural forces, human activities like construction and dredging, and climate change can all contribute to coastal erosion by altering the balance between erosion and deposition along the coast. This can lead to the gradual loss of beaches, cliffs, and other coastal features over time.


What is coastal geology?

Coastal geology studies coastal processes which affect the geology in coastal regions. Some coastal processes are effects of hurricanes, incised valleys, river migration, sedimentation, barrier island systems, estuaries, deltas, etc.


Why is it important to study coasts?

Studying coasts is important for understanding coastal processes and ecosystems, predicting and mitigating coastal hazards such as erosion and flooding, managing coastal resources sustainably, and addressing the impacts of climate change on coastal areas. This knowledge is vital for protecting coastal communities, economies, and the environment.