Sediment Sources And Budgets Flashcards
(16 cards)
What is a major source of sediment in high-rainfall environments?
Rivers
Significant river erosion occurs in these environments, contributing to sediment load.
Which river contributes to the sediment load in the Humber Estuary?
River Hull
This river is significant for sediment supply to the Holderness Coast.
What contributes significant sediment through erosion along the Holderness Coast?
Coastal cliffs
Particularly softer rock, such as soft boulder clay cliffs.
How is sediment transported southwards along the Holderness Coast?
Longshore drift
This process is driven by prevailing north-easterly winds.
What areas do sediment transport from in the Holderness Coast?
From Flamborough Head to Spurn Point
This movement is facilitated by longshore drift.
How can sediment be transported from offshore sources to the coast?
Constructive waves
These waves help to bring sediment to beaches like those at Hornsea.
What do aeolian processes transport along the Holderness Coast?
Fine sand
This sand is transported from beaches and dunes.
What is a sediment budget?
An analysis of the balance between sediment inputs and outputs
It helps predict changes in the coastline over time.
What can influence the sediment budget?
Coastal management strategies
Examples include beach nourishment and the construction of groynes.
What has been constructed at Mappleton to reduce erosion?
Rock groynes and revetments
These structures help maintain the sediment budget.
What are sediment cells?
Distinct areas of the coastline where sediment movement is largely self-contained
These can also be referred to as littoral cells.
How many sediment cells are there in total in the UK?
11
The main focus is often on specific case study areas.
What is the Holderness Coast part of?
A larger sediment cell extending from Flamborough Head to the Humber Estuary
This area is crucial for understanding sediment dynamics.
What maintains a state of dynamic equilibrium within the Holderness sediment cell?
The balance between sediment inputs and outputs
This balance can be disrupted by human activities or natural events.
What acts as a sediment source along the Holderness Coast?
Flamborough Head and soft boulder clay cliffs of Mappleton
These areas provide sediment to the coastal system.
What is a sediment sink on the Holderness Coast?
Spurn Point
This area collects sediment transported along the coast.
