Processes of coastal transport and deposition and the characteristics and formation of associated landforms and landscapes

Coastal transport and deposition are fundamental processes that shape the world's coastlines, creating a diverse array of landforms such as beaches, spits, and bars. Transport involves the movement of sediment along the coast by waves, tides, and currents, primarily through longshore drift. Deposition occurs when wave energy decreases, causing sediment to be dropped. Understanding these processes is crucial for predicting coastal change and managing erosion and flooding risks.

This topic explores how sediment is transported via traction, saltation, suspension, and solution, and how deposition builds features like beaches, sand dunes, and salt marshes. It also covers the formation of distinctive landforms such as spits, tombolos, and barrier islands, which are shaped by the interplay of sediment supply, wave energy, and sea-level change. These landforms are dynamic and respond to both natural processes and human intervention.

In the WJEC A-Level Geography course, this topic connects to broader themes of coastal systems, sea-level change, and coastal management. It requires students to apply knowledge of geomorphological processes to real-world examples, such as the Holderness Coast or the Mississippi Delta. Mastery of this content is essential for understanding how coastlines evolve over different timescales and for evaluating management strategies.