Coastal Landscapes (optional) — Eduqas A-Level Geography

Coastal landscapes are dynamic environments shaped by the interaction of marine, atmospheric, and terrestrial processes. This topic explores how waves, tides, and currents erode, transport, and deposit sediment to create distinctive landforms such as cliffs, headlands, bays, beaches, and spits. You will study the factors that influence coastal processes, including geology, sea level change, and human intervention, and learn to analyse the resulting landscapes in terms of their formation, development, and management.

Understanding coastal landscapes is crucial because they are among the most rapidly changing environments on Earth, directly affecting human activities such as settlement, tourism, and industry. With rising sea levels and increased storm frequency due to climate change, coastal management has become a key issue. This topic equips you with the knowledge to evaluate different management strategies—from hard engineering like sea walls to soft engineering like beach nourishment—and to assess their environmental, economic, and social impacts.

Within the WJEC A-Level Geography course, this optional unit builds on foundational concepts from physical geography, particularly geomorphological processes and systems thinking. It connects to themes of sustainability, risk management, and the interaction between physical and human geography. Mastering this topic will enable you to interpret coastal landscapes in the field, use OS maps and photographs effectively, and apply your understanding to unseen scenarios in exams.

• →Wave types and characteristics: constructive waves (low energy, strong swash, weak backwash, build beaches) vs destructive waves (high energy, weak swash, strong backwash, erode beaches).
• →Sediment cells and the coastal sediment budget: understanding inputs, outputs, and transfers of sediment within a defined coastal system.
• →Processes of erosion: hydraulic action, abrasion, attrition, solution; and processes of transportation: traction, saltation, suspension, solution.
• →Landform sequences: concordant and discordant coastlines, formation of headlands and bays, wave refraction, and the development of caves, arches, stacks, and stumps.
• →Coastal management strategies: hard engineering (groynes, sea walls, revetments) vs soft engineering (beach nourishment, dune regeneration, managed retreat) and their sustainability.

• Understanding of the coastal system (inputs, outputs, stores, transfers)
• Knowledge of sediment cells and dynamic equilibrium
• Distinction between high-energy (rocky) and low-energy (sandy/estuarine) environments
• Explanation of erosional processes (hydraulic action, abrasion, corrosion, attrition)
• Explanation of transport processes (longshore drift, traction, saltation, suspension, solution)
• Explanation of depositional processes (flocculation, sediment sorting)
• Formation of specific landforms (e.g., cliffs, wave-cut platforms, spits, bars, sand dunes, salt marshes)
• Impact of lithology and structural geology on coastal landforms
• Analysis of human impacts (positive and negative) on coastal systems
• Evaluation of coastal management strategies

• 💡Use diagrams to illustrate landform formation processes
• 💡Ensure case studies are contemporary (within the last two decades)
• 💡Explicitly link coastal management strategies to the specialised concepts (e.g., mitigation, adaptation, resilience)
• 💡Use specific terminology for processes (e.g., hydraulic action, saltation)
• 💡Practice data response questions using coastal maps and field data
• 💡Use specific terminology and case studies to support your answers. For example, when discussing coastal management, refer to real examples like the Holderness Coast or the Netherlands' Delta Works. This shows depth of knowledge.
• 💡In questions requiring evaluation, always consider both physical and human factors. For instance, when assessing the success of a management scheme, discuss its environmental impact, cost, and social acceptability.
• 💡Practice drawing annotated diagrams of landform formation (e.g., a stack or a spit). Clear, labelled diagrams can earn you marks even if your written explanation is brief.

• Confusing erosional processes with weathering or mass movement
• Failing to link landform formation to specific processes
• Neglecting the systems framework (inputs/outputs/transfers)
• Inadequate use of case studies or specific examples
• Misunderstanding the concept of dynamic equilibrium in coastal sediment budgets
• Failing to distinguish between eustatic and isostatic sea-level changes
• Misconception: Longshore drift always moves sediment in the same direction along a coast. Correction: Longshore drift direction depends on the prevailing wind and wave approach; it can vary seasonally or with local conditions.
• Misconception: Sea walls are the most effective form of coastal defence. Correction: While sea walls protect the land behind them, they can increase erosion at the base and downdrift, and are expensive to maintain. Soft engineering often provides more sustainable, long-term solutions.
• Misconception: All beaches are made of sand. Correction: Beaches can be composed of sand, shingle, pebbles, or even boulders, depending on the local geology and wave energy. Shingle beaches are common in high-energy environments.