The Coastal System and Wave Types

The littoral zone is where all the coastal action happens - it's the dynamic area affected by waves that's constantly seeking balance. Think of it like a never-ending tug-of-war between different forces trying to shape our coastlines.

High energy coastlines are the dramatic ones you see in documentaries - think steep cliffs, powerful destructive waves, and constant erosion. The Holderness Coast is a perfect example where the sea literally eats away metres of land each year. These coastlines have little vegetation and are shaped mainly by marine processes undercutting the cliffs.

Low energy coastlines are the complete opposite - gentle, sheltered areas where constructive waves quietly build up beaches and create new land through coastal accretion. The River Severn shows how deposition can actually expand coastlines seaward.

Wave types determine everything that happens. Constructive waves have powerful swash that pushes sediment up beaches, whilst destructive waves have strong backwash that strips material away. Weather patterns and seasons dramatically affect which type dominates - winter storms create more destructive conditions, whilst summer brings gentler, beach-building waves.

Key Insight: The same coastline can switch between erosion and deposition depending on wave conditions and seasons - it's all about which process is winning at any given time.