1) The coastal town of Hornsea suffers from erosion of weak boulder clay and loss of beach due to longshore sediment drift (LSD). This led to complaints and the construction of sea walls and groynes to build the beach back up as a defense. 2) The sea defenses at Hornsea have starved the nearby area of Mappleton of sand, causing its beaches to wash away from LSD. Two groynes and boulder revetments were constructed here for £2 million, reducing LSD and allowing more deposition. 3) Erosion at Great Cowden has been very rapid at 1-2 meters per year. Properties and farms are at risk from rotational slumping of saturated b

1. Holderness TownsAS Geography

2. Flamborough HeadSteep Vertical cliffs of resistant Chalk, Contains headland features (Stump, stack, geos etc)

3. Erosion rate of about 2mm a year

4. Currently no coastal protection due to resistant ChalkBridlingtonSmall coastal Town Sits on chalk base has harbour and leisure facilities

5. Erosion rates around 2mm a year

6. Used by tourists and fisherman

7. Little or no protection apart from promenadeHornseaTourist destination Suffers from erosion of weak boulder clay and loss of beach due to LSD

8. Complaints about loss of livelihoods lead to some hard engineering

9. Building of sea wall and groynes

10. Beach has grown and acts as a defence

11. Issues have been created further down the coast at Mappleton due to removal of sediment.MappletonThe sea defences at Hornsea have starved area of sand and beaches being washed away due to LSDBoulder Clay under cliff foot marine erosion (Hydraulic Action and Attrition)2 boulder Groynes built, and boulder revetments for £2m (Part funded by EU)More depositation and less LSDThis has worked but caused major issues at Great Cowden further south